International Trucks Diagnostics Trouble Codes (DTCs) | Truckmanualshub.com (2024)

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International Trucks Diagnostics Trouble Codes (DTCs) | Truckmanualshub.com (1)

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DISPLAYING DIAGNOSTIC TROUBLE CODES

The ability to display diagnostic trouble codes (DTC) is an optional feature. Codes may be displayed on either the gauge cluster or an optional vehicle information display (VID). The vehicle must be equipped with the option to display codes in both cases. Codes will not be displayed on the gauge cluster if the vehicle is equipped with the VID.

VEHICLES EQUIPPED WITH OPTION TO DISPLAY CODES

Displaying Codes on the Gauge Cluster (Non-VID equipped vehicles)

To display codes on vehicles not equipped with a VID:

  1. Set the parking brake.
  2. Turn the key switch to the ACCESSORY position to view only previously active codes. Turn the key switch to the IGNITION position to view both active and previously active codes.
  3. Momentarily press the Cruise “ON” switch and the Cruise “Resume” switch at the same time.

A gauge sweep will be performed on the gauges. The gauge cluster will then display the following information for 5 seconds:

  • Software Rev: XXX
  • Hardware Rev: XXX
  • Active Faults: XXX
  • Total Faults: XXX

NOTE – The gauge cluster will only display “Software Rev” and “Hardware Rev” for 5 seconds followed by the message “Diagnostic Trouble Codes are not available” if the vehicle is not equipped with the option to display codes.

If faults are present, the gauge cluster display will show each diagnostic trouble code for 10 seconds and then automatically scroll to the next entry and continue to cycle through the faults. Once all faults have been displayed the number of faults will be displayed again, then the cycle will repeat. To manually cycle through the fault list press and release the cluster display selector button. The following information will be displayed for each fault:

SPN: XXXX FMI: XX
Active
OC: XXX SA: XXX

SPN: XXXX FMI: XX
Previously Active OC: XXX SA: XXX

NOTE – Turning the key switch off, turning the key switch to the CRANK position, or releasing the park brake will take the gauge cluster out of the diagnostic mode.

Displaying Codes on the VID (if equipped)

The VID can be used to display all diagnostic trouble codes (DTC) on the vehicle. Suspect parameter number (SPN), failure mode indicator (FMI) and occurrence count numbers are listed. Source addresses and DTC descriptions are presented in plain text.

NOTE – The VID will display “Not Available” if a DTC description is not available for a particular fault.

Displaying codes will only be allowed if all of the following conditions are true:

• The key switch is in the IGNITION position.
• AND displaying codes is allowed due to vehicle orderable options
• AND the programmable parameter “Diagnostics” is enabled using Diamond Logic® Builder (DLB).
• The vehicle is not moving (the Vehicle Speed is equal to zero).
• The feature is not password protected to prevent unauthorized access. Refer to the Vehicle Information Display Owner’s Manual for more information.

Perform the following steps if all of the above conditions are met:

1. Go to the main menu screen

NOTE – The following selections will not be available if the vehicle is not equipped with the option to display codes.

2. Select “DIAGNOSTIC CODES”

3. Select “ACTIVE” or “INACTIVE”. The VID may initiate a password prompt if the VID has been password protected. Refer to the Vehicle Information Display Owner’s Manual for more information.

The VID will indicate “NO FAULT DETECTED” if faults are not found. Scroll through the list of faults if faults are present.
The following information will be displayed for each fault: SPN : FMI OC
SA
DTC Description

CLEARING DIAGNOSTIC TROUBLE CODES

Previously active diagnostic trouble codes can only be cleared by a service tool, such as Diamond Logic® Builder (DLB). Some previously active codes may not be cleared by this method.

DEFINITIONS

  • “SPN” represents the Suspect Parameter Number. This number identif es the item for which diagnostics are being reported.
  • FMI” is the Failure Mode Indicator. This number represents the type of failure detected. Refer to Failure Mode Indicators (FMI) below for more information.
  • Active” or “Previously Active” will be displayed to identify whether a fault is currently active or if the fault was previously active.
  • OC” is the Occurrence Count. This number represents the number of times a fault has gone from previously active to active.
  • “SA” is the Source Address. This number identif es the module reporting the fault. Refer to Source Addresses (SA) for more information.

FAILURE MODE INDICATORS (FMI)

FMI=0 – Data Valid But Above Normal Operational Range – Most Severe Level
FMI=1 – Data Valid But Below Normal Operational Range – Most Severe Level
FMI=2 – Data Erratic, Intermittent Or Incorrect
FMI=3 – Voltage Above Normal, Or Shorted To High Source
FMI=4 – Voltage Below Normal, Or Shorted To Low Source
FMI=5 – Current Below Normal Or Open Circuit
FMI=6 – Current Above Normal Or Grounded Circuit
FMI=7 – Mechanical System Not Responding Or Out Of Adjustment
FMI=8 – Abnormal Frequency Or Pulse Width Or Period
FMI=9 – Abnormal Update Rate
FMI=10 – Abnormal Rate Of Change
FMI=11 – Root Cause Not Known
FMI=12 – Bad Intelligent Device Or Component
FMI=13 – Out Of Calibration
FMI=14 – Special Instructions
FMI=15 – Data Valid But Above Normal Operating Range – Least Severe Level
FMI=16 – Data Valid But Above Normal Operating Range – Moderately Severe Level
FMI=17 – Data Valid But Below Normal Operating Range – Least Severe Level
FMI=18 – Data Valid But Below Normal Operating Range – Moderately Severe Level
FMI=19 – Received Network Data In Error
FMI=20 – Data Drifted High
FMI=21 – Data Drifted Low
FMI=31 – Condition Exists

SOURCE ADDRESSES (SA)

NOTE – The available source addresses will vary depending on each vehicle configuration.

NOTE – Diagnostic Trouble Codes listed in this document are Body Controller, Auxiliary Gauge Switch Pack, Secondary Instrument Cluster, Instrument Cluster, Rear HVAC Module, and Compass Module.

DIAGNOSTIC TROUBLE CODE (DTC) LIST

SASPNDTC DescriptionFMIMessageCauseCommentsPins
33116Brake Application Pressure0Brake Application Pressure Sensor

reading above normal range

Brake Application Sensor Shorted High or

faulty sensor system

1600-B14
33

33

116

158

Brake Application Pressure

Battery Potential (Voltage), Switched

1

2

Brake Application Pressure Sensor reading below normal range

Key State Ignition Signal Error

Brake Application Sensor Short To Ground or Open Circuit or faulty sensor system

Open in Ignition Signal Input Circuit To BC

1600-B14

1600-A16

33

33

168

168

Electrical Potential (Voltage)

Electrical Potential (Voltage)

2

3

Comm. fault from ESC/BC to PP3.

DC Module Overvoltage condition on

Datalink interrupted between ESC and Powerpack.

An Over Voltage Condition in the DC

The Power Pack E Module has stopped receiving heart beet message from the ESC/BC.

A High Battery Cutout fault has

33

168

Electrical Potential (Voltage)

3

Vehicle DC Bus.

AC Module Overvoltage condition on

regulator (Vehicle Battery Bus).

An Over Voltage Condition in the AC

occurred and the source of the fault is the DC regulator (Vehicle Battery Bus).

A high Battery Cutout fault has

33

168

Electrical Potential (Voltage)

4

High Voltage DC Bus.

DC Module Undervoltage condition

module (Inverter High Voltage Bus).

An Under Voltage Condition in the DC

occurred and the source of the fault is the AC module (inverter high voltage bus).

A Low Battery Cutout fault has

33

168

Electrical Potential (Voltage)

4

on Vehicle DC Bus.

AC Module Undervoltage condition

regulator (Vehicle Battery Bus).

An Under Voltage Condition in the AC

occurred and the source of the fault is the DC regulator (Vehicle Battery Bus).

A low Battery Cutout fault has

33

168

Electrical Potential (Voltage)

6

on High Voltage DC Bus.

AC Module has shutdown due to

module (Inverter High Voltage Bus).

A Surge may have occurred for a while in

occurred and the source of the fault is the AC module (inverter high voltage bus).

An Overload condition has been

33

168

Electrical Potential (Voltage)

8

overload condition.

Phase missing fault/alternator fault.

the Vehicle AC bus for a long time (The inverter supplies additional current to the load).

One or more of the three phase wire from

detected in the AC module and the Vehicle AC bus is shutdown.

One or more of the three phase

33

168

Electrical Potential (Voltage)

16

DC module over temperature

the Dynamic Alternator to the Power Pack E module may be disconnected.

An overcurrent condition in the Vehicle DC

wires from the alternator is disconnected. The Power Pack system is shutdown and requires an ignition cycle.

An Over Temperature fault has

33

168

Electrical Potential (Voltage)

16

condition.

AC module over temperature

Bus might have caused an over temperature.

An overcurrent condition in the Vehicle AC

occurred and the source of the fault is the DC regulator (Vehicle Battery Bus).

An Over temperature fault has

33

168

Electrical Potential (Voltage)

17

condition.

PPE3 Fuse Open.

Bus might have caused an over temperature.

Load exceeded rating.

occurred and the source of the fault is the AC module (inverter high voltage bus).

PPE3 module Fuse is Open.

33

33

175

175

Engine Oil Temperature 1

Engine Oil Temperature 1

0

1

Engine Oil Temp Sensor reading above normal range

Engine Oil Temp Sensor reading

Engine Oil Temperature Sensor Shorted High or Open Circuit or faulty sensor system

Engine Oil Temperature Sensor Short to

1600-B6

1600-B6

33

177

Transmission Oil Temperature

below normal range

Transmission Oil Temperature

Ground or faulty sensor system

Transmission Oil Temperature Sensor

1600-B7

33

177

Transmission Oil Temperature

1

Sensor reading above normal range

Transmission Oil Temperature

Shorted High or Open Circuit or faulty sensor system

Transmission Oil Temperature Sensor

1600-B7

Sensor reading below normal rangeShort to Ground or faulty sensor system
33

33

247

564

Total Engine Hours

Differential Lock State – Central

9

5

Engine Total Hours Not Received

Transfer Case Lock Under Current

The Engine Control Module did send the Total Engine Hours or possible Data Link failure

Current below normal or open circuit

Not available

Not

33

564

Differential Lock State – Central

6

Or Open Circuit

Transfer Case Lock Relay Over

Current above normal or grounded circuit

Not available

available

Not

33

566

Differential Lock State – Central Rear

5

Current

Power Divider Lock Relay Under

Open Circuit in Power Divider Lock Circuit

available

33

566

Differential Lock State – Central Rear

6

Current Or Open Circuit

Power Divider Lock Relay Over

Short To Ground in Power Divider Lock

33

567

Differential Lock State – Front Axle 1

5

Current

Forward Axle 1 Diff lock air solenoid

Circuit

Current below normal or open circuit

Not available

Not

33

567

Differential Lock State – Front Axle 1

6

output undercurrent or open circuit

Forward Axle 1 Diff lock air solenoid

Current above normal or grounded circuit

Not available

available

Not

33

569

Differential Lock State – Rear Axle 1

5

output overcurrent

Forward Rear Diff Lock Relay Under

Open Circuit in Forward Rear Diff Lock

available
Current Or Open CircuitCircuit
33569Differential Lock State – Rear Axle 16Forward Rear Diff Lock Relay Over CurrentShort To Ground in Forward Rear Diff Lock Circuit
33

33

570

570

Differential Lock State – Rear Axle 2

Differential Lock State – Rear Axle 2

5

6

Rear Rear Diff Lock Relay Under Current Or Open Circuit

Rear Rear Diff Lock Relay Over

Open Circuit in Rear Rear Diff Lock Circuit

Short To Ground in Rear Rear Diff Lock

33

571

Retarder Enable – Brake Assist

2

Current

Retarder Enable – Brake Assist

Circuit

Data erratic, intermittent or incorrect

33

576

Switch

ASR Off-road Switch

2

On/Off switch failure

Traction Disable panel mounted

Data erratic, intermittent or incorrect

33

577

ASR “Hill Holder” Switch

2

switch is in an invalid position

HSA Disable Switch error

Fault in HSA Disable Switch

Not available

Not

33

596

Cruise Control Enable Switch

Cruise Control Switch reading above

Shorted High or Open in Cruise Control

available

1600-B16

33

596

Cruise Control Enable Switch

1

normal range

Cruise Control Switch reading below

Switches Circuit

Short To Ground in Cruise Control

1600-B16

normal rangeSwitches Circuit

International Trucks Diagnostics Trouble Codes (DTCs) | Truckmanualshub.com (2)

33116Brake Application Pressure0Brake Application Pressure Sensor

reading above normal range

Brake Application Sensor Shorted High or

faulty sensor system

1600-B14
33

33

116

158

Brake Application Pressure

Battery Potential (Voltage), Switched

1

2

Brake Application Pressure Sensor reading below normal range

Key State Ignition Signal Error

Brake Application Sensor Short To Ground or Open Circuit or faulty sensor system

Open in Ignition Signal Input Circuit To BC

1600-B14

1600-A16

33

33

168

168

Electrical Potential (Voltage)

Electrical Potential (Voltage)

2

3

Comm. fault from ESC/BC to PP3.

DC Module Overvoltage condition on

Datalink interrupted between ESC and Powerpack.

An Over Voltage Condition in the DC

The Power Pack E Module has stopped receiving heart beet message from the ESC/BC.

A High Battery Cutout fault has

33

168

Electrical Potential (Voltage)

3

Vehicle DC Bus.

AC Module Overvoltage condition on

regulator (Vehicle Battery Bus).

An Over Voltage Condition in the AC

occurred and the source of the fault is the DC regulator (Vehicle Battery Bus).

A high Battery Cutout fault has

33

168

Electrical Potential (Voltage)

4

High Voltage DC Bus.

DC Module Undervoltage condition

module (Inverter High Voltage Bus).

An Under Voltage Condition in the DC

occurred and the source of the fault is the AC module (inverter high voltage bus).

A Low Battery Cutout fault has

33

168

Electrical Potential (Voltage)

4

on Vehicle DC Bus.

AC Module Undervoltage condition

regulator (Vehicle Battery Bus).

An Under Voltage Condition in the AC

occurred and the source of the fault is the DC regulator (Vehicle Battery Bus).

A low Battery Cutout fault has

33

168

Electrical Potential (Voltage)

6

on High Voltage DC Bus.

AC Module has shutdown due to

module (Inverter High Voltage Bus).

A Surge may have occurred for a while in

occurred and the source of the fault is the AC module (inverter high voltage bus).

An Overload condition has been

33

168

Electrical Potential (Voltage)

8

overload condition.

Phase missing fault/alternator fault.

the Vehicle AC bus for a long time (The inverter supplies additional current to the load).

One or more of the three phase wire from

detected in the AC module and the Vehicle AC bus is shutdown.

One or more of the three phase

33

168

Electrical Potential (Voltage)

16

DC module over temperature

the Dynamic Alternator to the Power Pack E module may be disconnected.

An overcurrent condition in the Vehicle DC

wires from the alternator is disconnected. The Power Pack system is shutdown and requires an ignition cycle.

An Over Temperature fault has

33

168

Electrical Potential (Voltage)

16

condition.

AC module over temperature

Bus might have caused an over temperature.

An overcurrent condition in the Vehicle AC

occurred and the source of the fault is the DC regulator (Vehicle Battery Bus).

An Over temperature fault has

33

168

Electrical Potential (Voltage)

17

condition.

PPE3 Fuse Open.

Bus might have caused an over temperature.

Load exceeded rating.

occurred and the source of the fault is the AC module (inverter high voltage bus).

PPE3 module Fuse is Open.

33

33

175

175

Engine Oil Temperature 1

Engine Oil Temperature 1

0

1

Engine Oil Temp Sensor reading above normal range

Engine Oil Temp Sensor reading

Engine Oil Temperature Sensor Shorted High or Open Circuit or faulty sensor system

Engine Oil Temperature Sensor Short to

1600-B6

1600-B6

33

177

Transmission Oil Temperature

below normal range

Transmission Oil Temperature

Ground or faulty sensor system

Transmission Oil Temperature Sensor

1600-B7

33

177

Transmission Oil Temperature

1

Sensor reading above normal range

Transmission Oil Temperature

Shorted High or Open Circuit or faulty sensor system

Transmission Oil Temperature Sensor

1600-B7

Sensor reading below normal rangeShort to Ground or faulty sensor system
33

33

247

564

Total Engine Hours

Differential Lock State – Central

9

5

Engine Total Hours Not Received

Transfer Case Lock Under Current

The Engine Control Module did send the Total Engine Hours or possible Data Link failure

Current below normal or open circuit

Not available

Not

33

564

Differential Lock State – Central

6

Or Open Circuit

Transfer Case Lock Relay Over

Current above normal or grounded circuit

Not available

available

Not

33

566

Differential Lock State – Central Rear

5

Current

Power Divider Lock Relay Under

Open Circuit in Power Divider Lock Circuit

available

33

566

Differential Lock State – Central Rear

6

Current Or Open Circuit

Power Divider Lock Relay Over

Short To Ground in Power Divider Lock

33

567

Differential Lock State – Front Axle 1

5

Current

Forward Axle 1 Diff lock air solenoid

Circuit

Current below normal or open circuit

Not available

Not

33

567

Differential Lock State – Front Axle 1

6

output undercurrent or open circuit

Forward Axle 1 Diff lock air solenoid

Current above normal or grounded circuit

Not available

available

Not

33

569

Differential Lock State – Rear Axle 1

5

output overcurrent

Forward Rear Diff Lock Relay Under

Open Circuit in Forward Rear Diff Lock

available
Current Or Open CircuitCircuit
33569Differential Lock State – Rear Axle 16Forward Rear Diff Lock Relay Over CurrentShort To Ground in Forward Rear Diff Lock Circuit
33

33

570

570

Differential Lock State – Rear Axle 2

Differential Lock State – Rear Axle 2

5

6

Rear Rear Diff Lock Relay Under Current Or Open Circuit

Rear Rear Diff Lock Relay Over

Open Circuit in Rear Rear Diff Lock Circuit

Short To Ground in Rear Rear Diff Lock

33

571

Retarder Enable – Brake Assist

2

Current

Retarder Enable – Brake Assist

Circuit

Data erratic, intermittent or incorrect

33

576

Switch

ASR Off-road Switch

2

On/Off switch failure

Traction Disable panel mounted

Data erratic, intermittent or incorrect

33

577

ASR “Hill Holder” Switch

2

switch is in an invalid position

HSA Disable Switch error

Fault in HSA Disable Switch

Not available

Not

33

596

Cruise Control Enable Switch

Cruise Control Switch reading above

Shorted High or Open in Cruise Control

available

1600-B16

33

596

Cruise Control Enable Switch

1

normal range

Cruise Control Switch reading below

Switches Circuit

Short To Ground in Cruise Control

1600-B16

normal rangeSwitches Circuit
331837Convoy Driving Lamp Select6BO Drive OvercurrentCurrent above normal or grounded circuit Not available
331840Rear Black Out Marker Select6BO Marker OvercurrentCurrent above normal or grounded circuit Not available
331841Black Out Brake/Stop Lamp Select6BO Stop OvercurrentCurrent above normal or grounded circuit Not available
33

33

2000

2000

Source Address 0

Source Address 0

9

19

ECM Data Link Comm. Failure

PTC1 (PGN 64892) not Received

Faulty ECM or Drivetrain Data Link

ECM not Programmed for Aftertreatment,

from EngineFaulty ECM, or Faulty Drivetrain Data Link
33

33

2003

2011

Source Address 3

Source Address 11

9

9

TCM Data Link Comm. Failure

ABS Data Link Comm. Failure

Faulty TCM or Drivetrain Data Link

Faulty ABS Module or Drivetrain Data Link

33

2023

Gauge Cluster

9

EGC Data Link Comm. Failure

Faulty EGC or Drivetrain Data Link

33

2040

Auxiliary Switch Pack #1

9

AGSP #1 Data Link Comm. Failure

Abnormal update rate

33

2058

Source Address 58

9

Rear HVAC Data Link

Faulty Rear HVAC or Body Builder Data

33

2058

Source Address 58

14

Communication Failure

Rear HVAC Data Link

Link

Faulty Rear HVAC or Body Builder Data

33

2062

Source Address 62

9

Communication Failure

Meritor Wabco Brake Controller Data

Link

Faulty Meritor Wabco Brake Controller Not available

33

2225

Remote Power Module #1 Fuse

9

Link Comm. Failure to BC

RPM #1 Data Link Comm. Failure

Module Data Link

Abnormal update rate

33

2225

Remote Power Module #1 Fuse

14

Remote Power Module #1 (address

Drivetrain J1939 data link, an improperly

225) has an address problem.addressed RPM module, or a missing RPM module that the BC is expecting
33

33

2226

2226

Remote Power Module #2 Fuse

Remote Power Module #2 Fuse

9

14

RPM #2 Data Link Comm. Failure

Remote Power Module #2 (address

Abnormal update rate

Drivetrain J1939 data link, an improperly

226) has an address problem.addressed RPM module, or a missing RPM module that the BC is expecting
33

33

2227

2227

Source Address 227

Source Address 227

9

14

RPM #3 Data Link Comm. Failure

Remote Power Module #3 (address

Abnormal update rate

Drivetrain J1939 data link, an improperly

227) has an address problem.addressed RPM module, or a missing RPM module that the BC is expecting
33

33

2228

2228

Remote Power Module #4 Fuse

Remote Power Module #4 Fuse

9

14

RPM #4 Data Link Comm. Failure

Remote Power Module #4 (address

Abnormal update rate

Drivetrain J1939 data link, an improperly

228) has an address problem.addressed RPM module, or a missing RPM module that the BC is expecting
33

33

2229

2229

Source Address 229

Source Address 229

9

14

RPM #5 Data Link Comm. Failure

Remote Power Module #5 (address

Abnormal update rate

Drivetrain J1939 data link, an improperly

229) has an address problem.addressed RPM module, or a missing RPM module that the BC is expecting
33

33

2230

2230

Source Address 230

Source Address 230

9

14

RPM #6 Data Link Comm. Failure

Remote Power Module #6 (address

Abnormal update rate

Drivetrain J1939 data link, an improperly

230) has an address problem.addressed RPM module, or a missing RPM module that the BC is expecting
33

33

2231

2231

Remote Power Module #7 Fuse

Remote Power Module #7 Fuse

9

14

RPM #7 Data Link Comm. Failure

Remote Power Module #7 (address

Abnormal update rate

Drivetrain J1939 data link, an improperly

231) has an address problem.addressed RPM module, or a missing RPM module that the BC is expecting
33

33

2233

2234

Source Address 233

Remote Air Solenoid #2 Fuse

9

9

Rear Driver Door Pod Data Link Comm. Failure

Rear Passenger Door Pod Data Link

Faulty Rear Driver Door Pod Module or Switch Data Link

Faulty Rear Passenger Door Pod Module

33

2236

Source Address 236

9

Comm. Failure

Driver Door Pod Data Link Comm.

or Switch Data Link

Faulty Driver Door Pod Module or Switch

33

2237

Source Address 237

9

Failure

Passenger Door Pod Data Link

Data Link

Faulty Passenger Door Pod Module or

33

2239

Source Address 239

9

Comm. Failure

HCM Data Link Comm. Failure

Switch Data Link

Faulty HCM or Drivetrain Data Link

33

2239

Source Address 239

14

HCM Address Conflict

Drivetrain J1939 data link, an improperly

33

2247

Source Address 247

9

Communication fault from PP3 to

addressed HCM, or a missing HCM that the BC is expecting

Private J1939 datalink problem (exceeded BC has failed to receive heartbeat

33

2361

Tractor Rear High Mounted Work

2

BC.

Work Light Switch Error

bandwidth). message from PowerPack E module.

Faulty Switch Actuator or Microswitch for

33

2362

Lights Command

Tractor Rear High Mounted Work

5

Work Light Undercurrent

Work Light Switch

Open in Work Light Circuit

33

2362

Lights

Tractor Rear High Mounted Work

6

Work Light Overcurrent

Short To Ground or Overload in Work

33

2368

Lights

Left Turn Signal Lights

5

Left Front Turn Lamp Undercurrent

Light Circuit

Open in Left Front Turn Signal Circuit

332368Left Turn Signal Lights6Left Front Turn Lamp OvercurrentShort To Ground or Overload in Left Front

33

2370

Right Turn Signal Lights

5

Right Front Turn Lamp Undercurrent

Turn Signal Circuit

Open in Right Front Turn Signal Circuit

332370Right Turn Signal Lights6Right Front Turn Lamp OvercurrentShort To Ground or Overload in Right

33

2372

Left Stop Light

5

Left Rear Turn Lamp Undercurrent

Front Turn Signal Circuit

Open in Left Rear Turn Signal Circuit

332372Left Stop Light6Left Rear Turn Lamp OvercurrentShort To Ground or Overload in Left Rear

33

2374

Right Stop Light

5

Right Rear Turn Lamp Undercurrent

Turn Signal Circuit

Open in Right Rear Turn Signal Circuit

332374Right Stop Light6Right Rear Turn Lamp OvercurrentShort To Ground or Overload in Right
33

33

881

881

Right Turn Lamp Circuit (Green)

Right Turn Lamp Circuit (Green)

5

6

Trailer Right Turn Lamp Relay Under

Current Or Open Circuit

Trailer Right Turn Lamp Relay Over

Open Circuit in Trailer Right Turn Lamp

Circuit

Short To Ground in Trailer Right Turn

1601-E15

1601-E15

33

882

Tail Lamp/License Plate Lamp

5

Current

Trailer License Plate Lamp Relay

Lamp Circuit

Open Circuit in Trailer License Plate

1601-E10

33

882

Circuit (Brown)

Tail Lamp/License Plate Lamp

6

Under Current Or Open Circuit

Trailer License Plate Lamp Relay

Lamp Circuit

Short To Ground in Trailer License Plate

1601-E10

33

973

Circuit (Brown)

Engine Retarder Selection

2

Over Current

Engine Retarder Level Selection

Lamp Circuit

Faulty Switch Actuator or Microswitch for

Switch ErrorEngine Retarder Level Select Switch
33980PTO Enable Switch2Engine PTO Switch ErrorData erratic, intermittent or incorrect
33

33

986

1043

Requested Percent Fan Speed

Internal Sensor Voltage Supply

2Engine Fan Switch Error

Bias Voltage reading above normal

Faulty Switch Actuator or Microswitch for Engine Fan Switch

Bias Voltage Circuit Shorted High

33

1043

Internal Sensor Voltage Supply

1

range

Bias Voltage reading below normal

Short To Ground in Bias Voltage Circuit

33

1079

Vref Sensor Supply Voltage

range

5V Sensor Supply Above Normal

Data valid but above normal operational

33

1079

Vref Sensor Supply Voltage

1

Range

5V Sensor Supply Below Normal

range – most severe level

Data valid but below normal operational

33

1081

Wait to Start Lamp

4

Range

Wait to Start Lamp

range – most severe level

Output shorted to ground

331081Wait to Start Lamp6Wait to Start LampOutput overheat
33

33

1087

1087

Service Brake Air Pressure Circuit #1

Service Brake Air Pressure Circuit #1

0

1

Primary Air Tank Sensor reading above normal range

Primary Air Tank Sensor reading

Primary Air Tank Sensor Shorted High or faulty sensor system

Primary Air Tank Sensor Short To Ground

1600-B2

1600-B2

below normal rangeor Open Circuit or faulty sensor system
33

33

1088

1088

Service Brake Air Pressure Circuit #2

Service Brake Air Pressure Circuit #2

0

1

Secondary Air Tank Sensor reading above normal range

Secondary Air Tank Sensor reading

Secondary Air Tank Sensor Shorted High or faulty sensor system

Secondary Air Tank Sensor Short To

1600-B3

1600-B3

33

1089

Auxiliary Equipment Supply Pressure

below normal range

Auxiliary Air Tank Sensor Reading

Ground or Open Circuit or faulty sensor system

Short to High in Air Pressure Auxiliary

1600-B2

33

1089

Auxiliary Equipment Supply Pressure

1

Above Normal

Auxiliary Air Tank Sensor Reading

Sensor Circuit

Short to Ground or Open in Air Pressure

1600-B2

33

1231

Body Address Claim/Message

9

Below Normal

J1939 Body Builder Data Link Lost

Auxiliary Sensor Circuit

Faulty BC or Bodybuilder Data Link

33

1231

Timeout

Body Address Claim/Message

14

Global Broadcast Messages, J1939,

Timeoutproprietary, private bus (body builder) (address 255) has an unknown fault.
33

33

1238

1378

Traction Control Override Switch

Change Oil Lamp

2

4

ATC OFF-ROAD Switch Error

Change Oil Lamp

Faulty Switch Actuator or Micro switch for ATC OFF-ROAD Switch

Output shorted to ground

331378Change Oil Lamp6Change Oil LampOutput overheat
33

33

1382

1547

Fuel Filter (suction side) Differential Pressure

A/C Evaporator Temperature

14The filter between the fuel pump and the fuel tank is plugged.

HVAC Inlet Temp Sensor reading

Heavy build up of particulate matter in the The detection has indicated a value fuel filter preventing fuel flow. of 51 on the fuel filter signal which

indicates a severely restricted or plugged condition.

HVAC Refrigerant Inlet Temperature

1600-B5

33

1547

A/C Evaporator Temperature

1

above normal range

HVAC Inlet Temp Sensor reading

Sensor Shorted High or Open Circuit or faulty sensor system

HVAC Refrigerant Inlet Temperature

1600-B5

33

1548

HVAC Duct Temperature

below normal range

HVAC Outlet Temp Sensor reading

Sensor Short To Ground or faulty sensor system

HVAC Refrigerant Outlet Temperature

1600-B13

33

1548

HVAC Duct Temperature

1

above normal range

HVAC Outlet Temp Sensor reading

Sensor Shorted High or Open Circuit or faulty sensor system

HVAC Refrigerant Outlet Temperature

1600-B13

33

1552

Operator Input device for Cab

2

below normal range

HVAC Control Head Temperature

Sensor Short To Ground or faulty sensor system

HVAC Motor in Wrong Position or

33

1553

Climate Control

HVAC Blower Motor Speed

Mix DM1

HVAC Blower Speed Analog Input

Jammed

HVAC Blower Speed Control Shorted

1600-B15

33

1553

Adjustment

HVAC Blower Motor Speed

1

reading above normal range

HVAC Blower Speed Analog Input

High or Open Circuit or faulty sensor system

HVAC Blower Speed Control Short To

1600-B15

33

1660

Adjustment

Engine Automatic Start Alarm

5

reading below normal range

Remote Start Alarm Buzzer Relay

Ground or faulty sensor system

Open Circuit in Remote Start Alarm

33

1660

Engine Automatic Start Alarm

6

Under Current Or Open Circuit

Remote Start Alarm Buzzer Relay

Buzzer Circuit

Short To Ground in Remote Start Alarm

33

1709

Transmission Controller Power

5

Over Current

PRNDL Pseudo ignition relay driver

Buzzer Circuit

Current below normal or open circuit

1601-E3

33

1709

Relay

Transmission Controller Power

6

output Under Current Or Open Circuit

PRNDL Pseudo ignition relay driver

Current above normal or grounded circuit

1601-E3

33

1716

Relay

Retarder Selection, non-engine

2

output overcurrent

Transmission Retarder Level

Data erratic, intermittent or incorrect

33

1741

Level Control Mode

Selection Switch Failure

Mode Selection Switch Damaged or

Data Valid but Above Normal Range, Not available

Not

33

1741

Level Control Mode

1

Not Connected

Possible ECU Malfunction

Most Severe

Data Valid, but Below Normal Range, Not available

available

Not

33

1747

Kneeling Control Mode Request

2

Suspension Dump Switch Error

Most Severe

Faulty Switch Actuator or Microswitch for

available

33

1755

Lowering Control Mode Rear Axle

5

Suspension Dump Solenoid B Relay

Suspension Dump Switch

Open Circuit in Suspension Dump

Under Current Or Open CircuitSolenoid B Circuit
33

33

1755

1756

Lowering Control Mode Rear Axle

Lifting Control Mode Rear Axle

6

5

Suspension Dump Solenoid B Relay Over Current

Suspension Dump Solenoid A Relay

Short To Ground in Suspension Dump Solenoid B Circuit

Open Circuit in Suspension Dump

Under Current Or Open CircuitSolenoid A Circuit
33

33

1756

1820

Lifting Control Mode Rear Axle

Ramp / Wheel Chair Lift Position

6

5

Suspension Dump Solenoid A Relay Over Current

Wheelchair Lift Solenoid Relay

Short To Ground in Suspension Dump Solenoid A Circuit

Current below normal or open circuit

1601-E1

33

1820

Ramp / Wheel Chair Lift Position

6

Under Current Or Open Circuit

Wheelchair Lift Solenoid Relay Short

Current above normal or grounded circuit

1601-E1

To Ground
332378Tractor Marker Light5Park Lights UndercurrentOpen in Park Lights Circuit1604-G
332378Tractor Marker Light6Park Lights OvercurrentShort To Ground or Overload in Park1604-G
Lights Circuit
332387Tractor Front Fog Lights Command2Fog Light Switch ErrorFaulty Switch Actuator or Microswitch for
Fog Lights Switch
332388Fog Light 1 command5Fog Lights Relay Under Current OrCurrent below normal or open circuit1603-F
Open Circuit
332388Fog Light 1 command6Fog Lights Relay OvercurrentCurrent above normal or grounded circuit1603-F
332389Rear Fog Light Command2Rear Fog Light Switch errorFaulty Switch Actuator or Microswitch forNot availableNot
Rear Fog Lights Switchavailable
332390Rear Fog Lights5Rear Fog Light Relay Under CurrentUnder Current Or Open Circuit in RearNot availableNot
Or Open CircuitFog Light Relay Driveravailable
332390Rear Fog Lights6Rear Fog Lights Relay OvercurrentShort circuit in Rear Fog Light RelayNot availableNot
Driveravailable
332392Back Up Light and Alarm Horn5Reverse Lights Relay Under CurrentCurrent below normal or open circuit1601-E4
Or Open Circuit
332392Back Up Light and Alarm Horn6Reverse Lights Relay OvercurrentCurrent above normal or grounded circuit1601-E4
332404Running Light5Running Light Control relay UnderOpen Circuit in Running Lights Circuit1601-F16
Current Or Open Circuit
332404Running Light6Running Light Control relay OverShort To Ground in Running Lights Circuit1601-F16
Current
332609Cab A/C Refrigerant Compressor0HVAC Pressure Sensor readingHVAC Pressure Sensor Shorted High or1600-B12
Outlet Pressureabove normal rangefaulty sensor system
332609Cab A/C Refrigerant Compressor1HVAC Pressure Sensor readingHVAC Pressure Short To Ground or Open1600-B12
Outlet Pressurebelow normal rangeCircuit or faulty sensor system
332609Cab A/C Refrigerant Compressor7AC – Service Now. FanAt the current operating ambient
Outlet PressureProblem/Clogged Pipetemperature the engine fan isn’t working,
one of the AC lines has become plugged
or the system is over-charged. The
compressor is shut off to prevent damage.
332609Cab A/C Refrigerant Compressor16HVAC High Pressure ProtectionHVAC Head Pressure exceeded 480 psi.
Outlet PressureCompressor shut off until next key cycle
for system protection
332636Windshield Wiper Motor ON/OFF5Wiper On/Off Relay Under CurrentOpen Circuit in Wiper On/Off Circuit1601-E7
Or Open Circuit
332636Windshield Wiper Motor ON/OFF6Wiper On/Off Relay Over CurrentShort To Ground in Wiper On/Off Circuit1601-E7
332637Windshield Wiper Motor Speed5Wiper High/Low Relay Under CurrentOpen Circuit in Wiper High/Low Circuit1601-E6
Or Open Circuit
332637Windshield Wiper Motor Speed6Wiper High/Low Relay Over CurrentShort To Ground in Wiper High/Low1601-E6
Circuit
332641Horn5Electric Horn UndercurrentOpen in Electric Horn Circuit1603-E
332641Horn6Electric Horn OvercurrentShort To Ground or Overload in City Horn1603-E
Circuit
332642Mirror Heat 15Left Mirror Heat UndercurrentOpen in Left Mirror Heat Circuit1603-H
332642Mirror Heat 16Left Mirror Heat OvercurrentShort to Ground or Overload in Left Mirror1603-H
Heat Circuit
332653Headlamp Low Beam Left #15Left Low Beam Under CurrentOpen in Left Low Beam Circuit1604-B
332653Headlamp Low Beam Left #16Left Low Beam Short To GroundShort To Ground or Overload in Left Low1604-B
Beam Circuit
332655Headlamp Low Beam Right #15Right Low Beam Open CircuitOpen in Right Low Beam Circuit1604-H
332655Headlamp Low Beam Right #16Right Low Beam Short To GroundShort to Ground or Overload in Right Low1604-H
Beam Circuit
332796Transfer Case Selector Switch2Front Axle Switch ErrorData erratic, intermittent or incorrect
332819Park Interlock Error5Park Position Interlock SolenoidCurrent below normal or open circuit1601-E8
Output is Under Current Or Open
Circuit.
332819Park Interlock Error6Park Position Interlock SolenoidCurrent above normal or grounded circuit1601-E8
Output is overcurrent.
333313Fifth Wheel Lock Couple Status5Fifth Wheel Jaw Unlock Solenoid 1Open Circuit or Defective Solenoid
Indicatoroutput is Under Current Or Open
Circuit
333313Fifth Wheel Lock Couple Status6Fifth Wheel Jaw Unlock Solenoid 1Short To Ground or Defective Solenoid
Indicatoroutput is Overcurrent
333314Fifth Wheel Release Control2Fifth Wheel Jaw Unlock Switch state

is invalid

Data erratic, intermittent or incorrect
333316Fifth Wheel Slider Lock Indicator5Fifth Wheel Slide Under Current OrOpen Circuit in Fifth Wheel Slide Circuit
Open Circuit
333316Fifth Wheel Slider Lock Indicator6Fifth Wheel Slide Over CurrentShort To Ground in Fifth Wheel Slide
Circuit
333412Lock Status of Door 17Driver Door Lock Motor FailureDriver Door Pod Module Has Shorted,
Opened, or Jammed Solenoid
333415Lock Status of Door 27Passenger Door Lock Motor FailurePassenger Door Pod Module Has
Shorted, Opened, or Jammed Solenoid
333418Lock Status of Door 37Rear Driver Door Lock Motor failureRear Driver Door Pod Module Has
Shorted, Opened, or Jammed Solenoid
333421Lock Status of Door 47Rear Passenger Door Lock MotorRear Passenger Door Pod Module Has
failureShorted, Opened, or Jammed Solenoid
333452Enable Switch – Transmission input2Transmission PTO A Switch ErrorFaulty Switch Actuator or Microswitch for
shaft PTO 1Transmission PTO A Switch
333452Enable Switch – Transmission input2PTO Engagement Switch ErrorFaulty Switch Actuator or Microswitch for
shaft PTO 1Transmission PTO A Switch
333453Enable Switch – Transmission input2Transmission PTO B Switch ErrorFaulty Switch Actuator or Microswitch for
shaft PTO 2Transmission PTO B Switch
333455Enable Switch – Transfer case output2Transfer Case Switch ErrorData erratic, intermittent or incorrect
shaft PTO
333455Enable Switch – Transfer case output2Transfer Case PTO Switch ErrorData erratic, intermittent or incorrect
shaft PTO
333456Engagement Consent –5Transmission PTO A Solenoid RelayOpen Circuit in Transmission PTO A
Transmission input shaft PTO 1Under Current Or Open CircuitSolenoid Circuit
333456Engagement Consent –6Transmission PTO A Solenoid RelayShort To Ground in Transmission PTO A
Transmission input shaft PTO 1Over CurrentSolenoid Circuit
333457Engagement Consent –5Transmission PTO B Solenoid RelayOpen Circuit in Transmission PTO B
Transmission input shaft PTO 2Under Current Or Open CircuitSolenoid Circuit
333457Engagement Consent –6Transmission PTO B Solenoid RelayShort To Ground in Transmission PTO B
Transmission input shaft PTO 2Over CurrentSolenoid Circuit
33

33

3461

3461

Engagement Status – Transmission

input shaft PTO 2

Engagement Status – Transmission

5

6

PTO Air Solenoid Under Current Or

Open Circuit

PTO Air Solenoid Overcurrent

Current below normal or open circuit

Current above normal or grounded circuit

33

3695

input shaft PTO 2

Regen Inhibit Switch Indicator

2

Regen Inhibit Switch Error

Faulty Switch Actuator or Microswitch for

33

3696

Parked Regen Switch Indicator

5

Open Circuit in Regen Inhibit Switch

Regen Inhibit Switch

Open Circuit in the Regen Inhibit Switch

33

3696

Parked Regen Switch Indicator

6

Indicator Circuit.

Over current for Parked Regen

Indicator Circuit.

Over current or Short to Battery for the

33

3696

Parked Regen Switch Indicator

2

Switch Indicator

Parked Regen Switch Error

Parked Regen Switch Indicator.

Faulty Switch Actuator or Microswitch for

33

3697

Particulate Trap Lamp Command

5

Particulate Trap Lamp Relay Under

Parked Regen Switch

Open Circuit in Particulate Trap Lamp

33

3697

Particulate Trap Lamp Command

6

Current Or Open Circuit

Particulate Trap Lamp Relay Over

Circuit

Short to Ground in Particulate Trap Lamp

33

3698

Exhaust System High Temperature

5

Current

Exhaust System High Temperature

Circuit

Open Circuit in Exhaust System High

33

3698

Lamp Command

Exhaust System High Temperature

6

Lamp Command Under Current Or Open Circuit

Exhaust System High Temperature

Temperature Circuit

Short to Ground in Exhaust System High

Lamp CommandLamp Command Over CurrentTemperature Circuit
333950Air Horn5Air Horn UndercurrentOpen in Air Horn Circuit1602-E12
333950Air Horn6Air Horn OvercurrentShort To Ground or Overload in Air Horn1602-E12

33

3952

Air Shield Light

6

Air Shield Lighting Overcurrent

Circuit

Short To Ground or Overload in Air Shield

1604-F

33

3957

Auxiliary Transmission Constant

5

Auxiliary Transmission Solenoid B

Light Circuit

Current below normal or open circuit

33

3957

Supply Actuator

Auxiliary Transmission Constant

6

(Constant Supply) output is Under Current Or Open Circuit.

Auxiliary Transmission Solenoid B

Current above normal or grounded circuit

33

3958

Supply Actuator

Auxiliary Transmission High Range

5

(Constant Supply) output is overcurrent.

Auxiliary Transmission Solenoid C

Current below normal or open circuit

33

3958

Actuator

Auxiliary Transmission High Range

6

(High) Output is Under Current Or Open Circuit.

Auxiliary Transmission Solenoid C

Current above normal or grounded circuit

33

3959

Actuator

Auxiliary Transmission Neutral

5

(High) output is overcurrent.

Auxiliary Transmission Solenoid A

Current below normal or open circuit

33

3959

Actuator

Auxiliary Transmission Neutral

6

(Neutral) output is Under Current Or Open Circuit.

Auxiliary Transmission Solenoid A

Current above normal or grounded circuit

33

3960

Actuator

Auxiliary Transmission Range Switch

2

(Neutral) output is overcurrent.

Auxiliary Transmission High/Low

Data erratic, intermittent or incorrect

33

3961

Body Equipment Hydraulic Power

5

Switch state is invalid.

TEM Epump Inhibit Relay Under

Current below normal or open circuit

1601-E1

33

3961

Auxiliary Pump Inhibit Command

Body Equipment Hydraulic Power

6

Current Or Open Circuit

TEM Epump Inhibit Relay Over

Current above normal or grounded circuit

1601-E1

33

3962

Auxiliary Pump Inhibit Command Bus Amber Signal Light 1

5

Current

Left Front Amber PWL Undercurrent

Current below normal or open circuit

1603-C

333962Bus Amber Signal Light 16Left Front Amber PWL OvercurrentCurrent above normal or grounded circuit1603-C
33

33

3963

3963

Bus Amber Signal Light 2

Bus Amber Signal Light 2

5

6

Right Front Amber PWL Undercurrent

Right Front Amber PWL Overcurrent

Current below normal or open circuit

Current above normal or grounded circuit

1604-J

1604-J

33

3964

Bus Amber Signal Light 3

5

Left Rear Amber PWL Undercurrent

Current below normal or open circuit

1603-G

33

3964

Bus Amber Signal Light 3

6

Left Rear Amber PWL Overcurrent

Current above normal or grounded circuit

1603-G

33

3965

Bus Amber Signal Light 4

5

Right Rear Amber PWL

Current below normal or open circuit

1603-K

33

3965

Bus Amber Signal Light 4

6

Undercurrent

Right Rear Amber PWL Overcurrent

Current above normal or grounded circuit

1603-K

33

3966

Bus Crossing Gate

5

Crossing Gate output is

Current below normal or open circuit

1602-E12

33

3966

Bus Crossing Gate

6

undercurrent.

Crossing Gate output is overcurrent.

Current above normal or grounded circuit

1602-E12

33

33

3967

3967

Bus Passenger Door Close Relay

Bus Passenger Door Close Relay

5

6

Bus Entrance Door Close Relay Driver Output is Under Current Or Open Circuit

Bus Entrance Door Close Relay

Current below normal or open circuit

Current above normal or grounded circuit

1601-E9

1601-E9

33

3969

Bus Passenger Door Control Switch

Driver Output is overcurrent

Bus Entrance Door Steering Wheel

Bus Door Control Switches Circuit Open

1600-B16

2Switch Input Above Normal Rangeor Shorted High
333969Bus Passenger Door Control Switch 21Bus Entrance Door Steering Wheel Switch Input Below Normal RangeShort To Ground in Bus Door Control Switches Circuit1600-B16
33

33

3970

3970

Bus Passenger Door Open Relay

Bus Passenger Door Open Relay

5

6

Bus Entrance Door Open Relay Driver Output is Under Current Or Open Circuit

Bus Entrance Door Open Relay

Current below normal or open circuit

Current above normal or grounded circuit

1601-E13

1601-E13

33

3971

Bus Red Signal Light 1

5

Driver Output is overcurrent

Left Front Red PWL Undercurrent

Current below normal or open circuit

1603-H

333971Bus Red Signal Light 16Left Front Red PWL OvercurrentCurrent above normal or grounded circuit1603-H
333972Bus Red Signal Light 25Right Front Red PWL UndercurrentCurrent below normal or open circuit1603-F
333972Bus Red Signal Light 26Right Front Red PWL OvercurrentCurrent above normal or grounded circuit1603-F
333973Bus Red Signal Light 35Left Rear Red PWL UndercurrentCurrent below normal or open circuit1603-J
333973Bus Red Signal Light 36Left Rear Red PWL OvercurrentCurrent above normal or grounded circuit1603-J
333974Bus Red Signal Light 45Right Rear Red PWL UndercurrentCurrent below normal or open circuit1603-L
333974Bus Red Signal Light 46Right Rear Red PWL OvercurrentCurrent above normal or grounded circuit1603-L
333975Bus Stop Arm5Bus Stop Arm Output is UnderCurrent below normal or open circuit1601-E2

33

3975

Bus Stop Arm

6

Current Or Open Circuit

Bus Stop Arm Output is over current

Current above normal or grounded circuit

1601-E2

333976Cab Dome Light 15Cab Dome Light Open CircuitOpen in Cab Dome Light Circuit1604-J
333976Cab Dome Light 16Cab Dome Light Short To GroundShort To Ground or Overload in Cab1604-J
Dome Light Circuit
333977Cab Dome Light 25Sleeper Dome Light Relay UnderOpen Circuit in Sleeper Dome Light1601-F2
Current Or Open CircuitCircuit
333977Cab Dome Light 26Sleeper Dome Light Over CurrentShort To Ground in Sleeper Dome Light1601-F2
Circuit
333978Cab Dome Light 2 Switch2Sleeper Dome / Floor Search LightFaulty Switch Actuator or Microswitch for
Switch ErrorSleeper Dome / Floor Search Light Switch
333979Cab Floor Light5Floor Lights Relay Under Current OrOpen Circuit in Floor Light Circuit1601-E5
Open Circuit
333979Cab Floor Light6Floor Lights Relay Over CurrentShort To Ground in Floor Light Circuit1601-E5
333981Cab HVAC Mode Control Actuator2HVAC Control Head Mode FaultHVAC Motor in Wrong Position or
DM1Jammed
333982Cab HVAC Rear Blower Speed2HVAC Rear Blower Speed ControlFaulty Switch Actuator or Microswitch for
Control SwitchSwitch ErrorHVAC Rear Blower Speed Control Switch
333983Cab HVAC Rear Temperature2Rear HVAC Temperature ControlFaulty Switch Actuator or Microswitch for
Control SwitchSwitch ErrorRear HVAC Temperature Control Switch
333984Cab HVAC Recirculation Door2HVAC Control Head Air Inlet DM1HVAC Motor in Wrong Position or
Control ActuatorJammed
333985Cab HVAC System Controller9HVAC Control Head Circuit Failed ToAbnormal update rate
Communicate With the Body
Controller
333987Compression Brake Enable Switch5Compression Brake Indicator outputCurrent below normal or open circuit1601-E4
Indicator Lampis Under Current Or Open Circuit
333987Compression Brake Enable Switch6Compression Brake Indicator is overCurrent above normal or grounded circuit1601-E4
Indicator Lampcurrent
333988Door 1 Control Module7Driver Door Pod Module FailureDefective Driver Door Pod Module
333989Door 1 Window Motor7Driver Window Motor FailureDriver Door Pod Module Window Motor
Has Short or Open or Window is Jammed
333990Door 2 Control Module7Passenger Door Pod Module FailureDefective Passenger Door Pod Module
333991Door 2 Window Motor7Passenger Window Motor FailurePassenger Door Pod Module Window
Motor Has Short or Open or Window is
Jammed
333992Door 3 Control module7Rear Driver Door Pod Module FailureDefective Rear Driver Door Pod Module
333993Door 3 Window Motor7Rear Driver Window Motor FailureRear Driver Door Pod Module Window
Motor Has Short or Open or Window is
Jammed
333994Door 4 Control Module7Rear Passenger Door Pod ModuleDefective Rear Passenger Door Pod
FailureModule
333995Door 4 Window Motor7Rear Passenger Window MotorRear Passenger Door Pod Module
FailureWindow Motor Has Short or Open or
Window is Jammed
333997Electrical Accessory Power Relay5Electrical Accessory Request RelayOpen Circuit in Electrical Accessory1601-E11
Under Current Or Open CircuitRequest Circuit
333997Electrical Accessory Power Relay6Electrical Accessory Request RelayShort To Ground in Electrical Accessory1601-E11
Over CurrentRequest Circuit
333998Electrical Load Shed OFF5Load Shed OFF Relay UnderOpen Circuit in Load Shed OFF Circuit1601-F7
Current Or Open Circuit
333998Electrical Load Shed OFF6Load Shed OFF Relay Over CurrentShort To Ground in Load Shed OFF1601-F7
Circuit
333999Electrical Load Shed ON5Load Shed ON Relay Under CurrentOpen Circuit in Load Shed ON Circuit1601-F6
Or Open Circuit
333999Electrical Load Shed ON6Load Shed ON Relay Over CurrentShort To Ground in Load Shed ON Circuit1601-F6
334002Engine Remote Start6TEM Engine Crank Relay OverCurrent above normal or grounded circuit
Current
334003Engine Remote Stop5TEM Engine Stop Relay UnderCurrent below normal or open circuit1601-E2
Current Or Open Circuit
334003Engine Remote Stop6TEM Engine Stop Relay OverCurrent above normal or grounded circuit1601-E2
Current
334004Exterior Lamp Check Switch2Exterior Lamp Check Switch ErrorData erratic, intermittent or incorrect
334007Fifth Wheel Slide Lock Switch2Fifth Wheel Slide Switch ErrorFaulty Switch Actuator or Microswitch for
Fifth Wheel Slide Switch
334008Fog Light 25Right Fog Light UndercurrentOpen in Right Fog Light Circuit1603-K
334008Fog Light 26Right Fog Light OvercurrentShort To Ground or Overload in Right Fog1603-K
Light Output Circuit
334009Fuel Filter Fuel Heater Relay5Fuel Heater Relay Under Current OrOpen Circuit in Fuel Heater Circuit1601-F12
Open Circuit
334009Fuel Filter Fuel Heater Relay6Fuel Heater Relay Over CurrentShort To Ground in Fuel Heater Circuit1601-F12
334010Fuel Tank Transfer Pump5Fuel Transfer Pump Relay UnderOpen Circuit in Fuel Transfer Pump1601-F11
Current Or Open CircuitCircuit
334010Fuel Tank Transfer Pump6Fuel Transfer Pump Relay Short ToShort To Ground in Fuel Transfer Pump1601-F11
GroundCircuit
334011Headlamp 1 High Beam5Left High Beam Open CircuitOpen in Left High Beam Circuit1604-C
334011Headlamp 1 High Beam6Left High Beam Short To GroundShort To Ground or Overload in Left High1604-C
Beam Circuit
334012Headlamp 2 High Beam5Right High Beam Open CircuitOpen in Right High Beam Circuit1604-K
334012Headlamp 2 High Beam6Right High Beam Short To GroundShort To Ground or Overload in Right1604-K
High Beam Circuit
334014High Current Auxiliary Load Switch 12High Current Load Switch ErrorData erratic, intermittent or incorrect
334016High Current Auxiliary Power Relay 15High Current Load Under Current OrCurrent below normal or open circuit1601-E16
Open Circuit
334016High Current Auxiliary Power Relay 16High Current Load OvercurrentCurrent above normal or grounded circuit1601-E16
334022Lift Gate Power Control Enable5Lift Gate Enable UndercurrentCurrent below normal or open circuit1603-J
334022Lift Gate Power Control Enable6Lift Gate Enable OvercurrentCurrent above normal or grounded circuit1603-J
334023Lift Gate Power Control Switch2Lift Gate Switch ErrorData erratic, intermittent or incorrect
334024Marker Light Interrupt Switch2Marker Light Interrupt Switch FailureData erratic, intermittent or incorrect
334026Mirror Heat 25Right Mirror Heat UndercurrentOpen in Right Mirror Heat Circuit1603-L
334026Mirror Heat 26Right Mirror Heat OvercurrentShort To Ground or Overload in Right1603-L
Mirror Heat Circuit
334028Service Brake Circuit 1 Air Tank5Service Brake Circuit 1 Air TankCurrent below normal or open circuit
Drain ValveDrain Valve Solenoid Under Current
Or Open Circuit
334028Service Brake Circuit 1 Air Tank6Service Brake Circuit 1 Air TankCurrent above normal or grounded circuit
Drain ValveDrain Valve Solenoid Short To
Ground
334029Service Brake Circuit 1 Air Tank2Service Brake Circuit 1 Air TankData erratic, intermittent or incorrect
Drain Valve SwitchDrain Switch Error
334030Service Brake Circuit 2 Air Tank5Service Brake Circuit 2 Air TankCurrent below normal or open circuit
Drain ValveDrain Valve Solenoid Under Current
Or Open Circuit
334030Service Brake Circuit 2 Air Tank6Service Brake Circuit 2 Air TankCurrent above normal or grounded circuit
Drain ValveDrain Valve Solenoid Short To
Ground
334031Service Brake Supply Air Tank Drain5Service Brake Supply Air Tank DrainCurrent below normal or open circuit
ValveValve Solenoid Under Current Or
Open Circuit
334031Service Brake Supply Air Tank Drain6Service Brake Supply Air Tank DrainCurrent above normal or grounded circuit
ValveValve Solenoid Short To Ground
334032Service Brake Supply Air Tank Drain2Service Brake Supply Air Tank DrainData erratic, intermittent or incorrect
Valve SwitchValve Switch Error
334033Sleeper Remote – Start/Stop Enable5Sleeper Control Enable Relay UnderCurrent below normal or open circuit
CommandCurrent or Open Circuit
334033Sleeper Remote – Start/Stop Enable6Sleeper Control Enable Relay OverShort To Ground in Sleeper Control
CommandCurrentEnable Circuit
334038Snow Plow Forward Lighting Relay 25Right Plow Light Relay UnderCurrent below normal or open circuit1601-F16
Current Or Open Circuit
334038Snow Plow Forward Lighting Relay 26Right Plow Light Relay Circuit ShortCurrent above normal or grounded circuit1601-F16
To Ground
334039Snow Plow Forward Lighting Relay 15Left Plow Light Relay Circuit UnderCurrent below normal or open circuit1601-F12
Current Or Open Circuit
334039Snow Plow Forward Lighting Relay 16Left Plow Light Relay Circuit ShortCurrent above normal or grounded circuit1601-F12
To Ground
334040Snow Plow Lighting Mode Switch2Snow Plow Switch ErrorData erratic, intermittent or incorrect
334041Software Loop Time Exceeded14Software Loop Time Exceeded in theSoftware Configuration Too Big
Body Controller, Internal Fault
334042Trailer Auxiliary Power Switch2Trailer Auxiliary Power Switch ErrorFaulty Switch Actuator or Microswitch for
Auxiliary Trailer Switch
334043Transfer Case Front Driveline5Transfer Case Front DrivelineCurrent below normal or open circuit
ActuatorSolenoid Under Current Or Open
Circuit
334043Transfer Case Front Driveline6Transfer Case Front DrivelineCurrent above normal or grounded circuit
ActuatorSolenoid Short To Ground
334044Transfer Case High Range Actuator5Transfer Case High Range SolenoidCurrent below normal or open circuit
Under Current Or Open Circuit
334044Transfer Case High Range Actuator6Transfer Case High Range SolenoidCurrent above normal or grounded circuit
Short To Ground
334045Transfer Case Low Range Actuator5Transfer Case Low Range SolenoidCurrent below normal or open circuit
Under Current Or Open Circuit
334045Transfer Case Low Range Actuator6Transfer Case Low Range SolenoidCurrent above normal or grounded circuit
Short To Ground
334046Transfer Case Neutral Actuator5Transfer Case Neutral SolenoidCurrent below normal or open circuit
Under Current Or Open Circuit
334046Transfer Case Neutral Actuator6Transfer Case Neutral SolenoidCurrent above normal or grounded circuit
Short To Ground
334047Transfer Case Output Shaft PTO5Transfer Case Output Shaft PTOCurrent below normal or open circuit
ActuatorActuator Under Current Or Open
Circuit
334047Transfer Case Output Shaft PTO6Transfer Case Output Shaft PTOCurrent above normal or grounded circuit
ActuatorActuator Over Current
334048Transfer Case Range Switch2Transfer Case Range Switch ErrorData erratic, intermittent or incorrect
334049Transfer Case Rear Driveline5Transfer Case Rear Driveline RelayCurrent below normal or open circuit
ActuatorUnder Current Or Open Circuit
334049Transfer Case Rear Driveline6Transfer Case Rear Driveline RelayCurrent above normal or grounded circuit
ActuatorOver Current
334053Transmission Input Shaft PTO 25Transmission Input Shaft PTOCurrent below normal or open circuitNot availableNot
ActuatorEngagement Actuator Circuit Underavailable
Current Or Open Circuit
334053Transmission Input Shaft PTO 26Transmission Input Shaft PTOCurrent above normal or grounded circuitNot availableNot
ActuatorEngagement Actuator Circuitavailable
Overcurrent
334055Transmission Retarder Enable

Switch

2Transmission Retarder On/Off switch

Failure

Data erratic, intermittent or incorrect
334056Two Speed Axle Actuator5Two Speed Axle Solenoid RelayCurrent below normal or open circuit
Under Current Or Open Circuit
334056Two Speed Axle Actuator6Two Speed Axle Solenoid RelayCurrent above normal or grounded circuit
Short To Ground
334057Wiper Motor5Wiper Motor UndercurrentOpen in Wiper Motor Circuit1604-A
334057Wiper Motor6Wiper Motor OvercurrentShort To Ground or Overload in Wiper1604-A
Motor Circuit
334058Cab Dome Light 1 Switch2Cab Dome Light Switch is reportingFaulty Switch Actuator or Microswitch for
an error.Cab Dome Light Switch
33520461Switch 6-Pack #1 Data Link9Switch 6-Pack #1 Data Link Comm.Faulty Switch Pack #1 or Switch Data Link
Failure
33520462Switch 6-Pack #2 Data Link9Switch 6-Pack #2 Data Link Comm.Faulty Switch Pack #2 or Switch Data Link
Failure
33520463Switch 6-Pack #3 Data Link9Switch 6-Pack #3 Data Link Comm.Faulty Switch Pack #3 or Switch Data Link
Failure
33520464Electrical Accessory Request5Electrical Accessory Request Relay

Under Current Or Open Circuit

Open Circuit in Electrical Accessory

Request Circuit

33

33

520464

520465

Electrical Accessory Request

HVAC Control Head Multiple Motor

6

2

Electrical Accessory Request Relay Over Current

HVAC control Head Multiple Motor

Short To Ground in Electrical Accessory Request Circuit

HVAC Motor in Wrong Position or

33

520467

Faults

Comm. Loss from BC to Power Pack

9

Faults DM1

Comm. fault from BC to PP3.

Jammed

Private J1939 datalink problem (exceeded The Power Pack E Module has

33

520468

RPM 1 Channel 1 Cab Switch

2

RPM 1 Channel 1 Switch Error

bandwidth). stopped receiving heart beat message from the BC.

Data erratic, intermittent or incorrect

33

520469

RPM 1 Channel 1 Overcurrent

6

RPM 1 Channel 1 Overcurrent

Current above normal or grounded circuit

33520469RPM 1 Channel 1 Overcurrent

33

520469

RPM 1 Channel 1 Overcurrent

19

Unavailable

RPM 1 Channel 1 Analog Input

(PGN 65313 , Byte 3) indicates a value of

FFh

RPM 1 Channel 1 Analog Input Data

33

520470

RPM 1 Channel 2 Cab Switch

2

Invalid Data

RPM 1 Channel 2 Switch Error

(PGN 65313 , Byte 3) indicates a value in the range of FCh to FEh

Data erratic, intermittent or incorrect

33

520471

RPM 1 Channel 2 Overcurrent

6

RPM 1 Channel 2 Overcurrent

Current above normal or grounded circuit

33520471RPM 1 Channel 2 Overcurrent14RPM 1 Channel 2 Analog Input Data UnavailableRPM 1 Channel 2 Analog Input Data (PGN 65313 , Byte 4) indicates a value of FFh
33520471RPM 1 Channel 2 Overcurrent19RPM 1 Channel 2 Analog Input Invalid DataRPM 1 Channel 2 Analog Input Data (PGN 65313 , Byte 4) indicates a value in the range of FCh to FEh
33

33

520472

520473

RPM 1 Channel 3 Cab Switch

RPM 1 Channel 3 Overcurrent

2

6

RPM 1 Channel 3 Switch Error

RPM 1 Channel 3 Overcurrent

Data erratic, intermittent or incorrect

Current above normal or grounded circuit

33520473RPM 1 Channel 3 Overcurrent

33

520473

RPM 1 Channel 3 Overcurrent

19

Unavailable

RPM 1 Channel 3 Analog Input

(PGN 65313 , Byte 5) indicates a value of

FFh

RPM 1 Channel 3 Analog Input Data

33

520474

RPM 1 Channel 4 Cab Switch

2

Invalid Data

RPM 1 Channel 4 Switch Error

(PGN 65313 , Byte 5) indicates a value in the range of FCh to FEh

Data erratic, intermittent or incorrect

33

520475

RPM 1 Channel 4 Overcurrent

6

RPM 1 Channel 4 Overcurrent

Current above normal or grounded circuit

33

520475

RPM 1 Channel 4 Overcurrent

14

RPM 1 Channel 4 Analog Input Data

RPM 1 Channel 4 Analog Input Data

33

520475

RPM 1 Channel 4 Overcurrent

19

Unavailable

RPM 1 Channel 4 Analog Input

(PGN 65313 , Byte 6) indicates a value of FFh

RPM 1 Channel 4 Analog Input Data

33

520476

RPM 1 Channel 5 Cab Switch

2

Invalid Data

RPM 1 Channel 5 Switch Error

(PGN 65313 , Byte 6) indicates a value in the range of FCh to FEh

Data erratic, intermittent or incorrect

33

520477

RPM 1 Channel 5 Overcurrent

6

RPM 1 Channel 5 Overcurrent

Current above normal or grounded circuit

33

520477

RPM 1 Channel 5 Overcurrent

14

RPM 1 Channel 5 Analog Input Data

RPM 1 Channel 5 Analog Input Data

33

520477

RPM 1 Channel 5 Overcurrent

19

Unavailable

RPM 1 Channel 5 Analog Input

(PGN 65313 , Byte 7) indicates a value of FFh

RPM 1 Channel 5 Analog Input Data

33

520478

RPM 1 Channel 6 Cab Switch

2

Invalid Data

RPM 1 Channel 6 Switch Error

(PGN 65313 , Byte 7) indicates a value in the range of FCh to FEh

Data erratic, intermittent or incorrect

33

520479

RPM 1 Channel 6 Overcurrent

6

RPM 1 Channel 6 Overcurrent

Current above normal or grounded circuit

33520479RPM 1 Channel 6 Overcurrent14RPM 1 Channel 6 Analog Input Data UnavailableRPM 1 Channel 6 Analog Input Data (PGN 65313 , Byte 8) indicates a value of FFh
33520479RPM 1 Channel 6 Overcurrent19RPM 1 Channel 6 Analog Input Invalid DataRPM 1 Channel 6 Analog Input Data (PGN 65313 , Byte 8) indicates a value in the range of FCh to FEh
33

33

520480

520481

RPM 2 Channel 1 Cab Switch

RPM 2 Channel 1 Overcurrent

2

6

RPM 2 Channel 1 Switch Error

RPM 2 Channel 1 Overcurrent

Data erratic, intermittent or incorrect

Current above normal or grounded circuit

33520481RPM 2 Channel 1 Overcurrent

33

520481

RPM 2 Channel 1 Overcurrent

19

Unavailable

RPM 2 Channel 1 Analog Input

(PGN 65313 , Byte 3) indicates a value of

FFh

RPM 2 Channel 1 Analog Input Data

33

520482

RPM 2 Channel 2 Cab Switch

2

Invalid Data

RPM 2 Channel 2 Switch Error

(PGN 65313 , Byte 3) indicates a value in the range of FCh to FEh

Data erratic, intermittent or incorrect

33

520483

RPM 2 Channel 2 Overcurrent

6

RPM 2 Channel 2 Overcurrent

Current above normal or grounded circuit

33520483RPM 2 Channel 2 Overcurrent14RPM 2 Channel 2 Analog Input Data UnavailableRPM 2 Channel 2 Analog Input Data (PGN 65313 , Byte 4) indicates a value of FFh
33520483RPM 2 Channel 2 Overcurrent19RPM 2 Channel 2 Analog Input

Invalid Data

RPM 2 Channel 2 Analog Input Data

(PGN 65313 , Byte 4) indicates a value in the range of FCh to FEh

33520484RPM 2 Channel 3 Cab Switch2RPM 2 Channel 3 Switch ErrorData erratic, intermittent or incorrect

33

520485

RPM 2 Channel 3 Overcurrent

6

RPM 2 Channel 3 Overcurrent

Current above normal or grounded circuit

33520485RPM 2 Channel 3 Overcurrent14RPM 2 Channel 3 Analog Input Data UnavailableRPM 2 Channel 3 Analog Input Data (PGN 65313 , Byte 5) indicates a value of FFh
33520485RPM 2 Channel 3 Overcurrent19RPM 2 Channel 3 Analog Input Invalid DataRPM 2 Channel 3 Analog Input Data (PGN 65313 , Byte 5) indicates a value in the range of FCh to FEh
33520486RPM 2 Channel 4 Cab Switch2RPM 2 Channel 4 Switch ErrorData erratic, intermittent or incorrect

33

520487

RPM 2 Channel 4 Overcurrent

6

RPM 2 Channel 4 Overcurrent

Current above normal or grounded circuit

33520487RPM 2 Channel 4 Overcurrent14RPM 2 Channel 4 Analog Input Data UnavailableRPM 2 Channel 4 Analog Input Data (PGN 65313 , Byte 6) indicates a value of FFh
33520487RPM 2 Channel 4 Overcurrent19RPM 2 Channel 4 Analog Input Invalid DataRPM 2 Channel 4 Analog Input Data (PGN 65313 , Byte 6) indicates a value in the range of FCh to FEh
33520488RPM 2 Channel 5 Cab Switch2RPM 2 Channel 5 Switch ErrorData erratic, intermittent or incorrect

33

520489

RPM 2 Channel 5 Overcurrent

6

RPM 2 Channel 5 Overcurrent

Current above normal or grounded circuit

33520489RPM 2 Channel 5 Overcurrent14RPM 2 Channel 5 Analog Input Data UnavailableRPM 2 Channel 5 Analog Input Data (PGN 65313 , Byte 7) indicates a value of FFh
33520489RPM 2 Channel 5 Overcurrent19RPM 2 Channel 5 Analog Input Invalid DataRPM 2 Channel 5 Analog Input Data (PGN 65313 , Byte 7) indicates a value in the range of FCh to FEh
33520490RPM 2 Channel 6 Cab Switch2RPM 2 Channel 6 Switch ErrorData erratic, intermittent or incorrect

33

520491

RPM 2 Channel 6 Overcurrent

6

RPM 2 Channel 6 Overcurrent

Current above normal or grounded circuit

33

520491

RPM 2 Channel 6 Overcurrent

14

RPM 2 Channel 6 Analog Input Data

RPM 2 Channel 6 Analog Input Data

33

520491

RPM 2 Channel 6 Overcurrent

19

Unavailable

RPM 2 Channel 6 Analog Input

(PGN 65313 , Byte 8) indicates a value of FFh

RPM 2 Channel 6 Analog Input Data

33

520504

RPM 4 Channel 1 Cab Switch

2

Invalid Data

RPM 4 Channel 1 Switch Error

(PGN 65313 , Byte 8) indicates a value in the range of FCh to FEh

Data erratic, intermittent or incorrect

33

520505

RPM 4 Channel 1 Overcurrent

6

RPM 4 Channel 1 Overcurrent

Current above normal or grounded circuit

33520505RPM 4 Channel 1 Overcurrent

33

520505

RPM 4 Channel 1 Overcurrent

19

Unavailable

RPM 4 Channel 1 Analog Input

(PGN 65313 , Byte 3) indicates a value of

FFh

RPM 4 Channel 1 Analog Input Data

33

520506

RPM 4 Channel 2 Cab Switch

2

Invalid Data

RPM 4 Channel 2 Switch Error

(PGN 65313 , Byte 3) indicates a value in the range of FCh to FEh

Data erratic, intermittent or incorrect

33

520507

RPM 4 Channel 2 Overcurrent

6

RPM 4 Channel 2 Overcurrent

Current above normal or grounded circuit

33

520507

RPM 4 Channel 2 Overcurrent

14

RPM 4 Channel 2 Analog Input Data

RPM 4 Channel 2 Analog Input Data

33

520507

RPM 4 Channel 2 Overcurrent

19

Unavailable

RPM 4 Channel 2 Analog Input

(PGN 65313 , Byte 4) indicates a value of FFh

RPM 4 Channel 2 Analog Input Data

33

520508

RPM 4 Channel 3 Cab Switch

2

Invalid Data

RPM 4 Channel 3 Switch Error

(PGN 65313 , Byte 4) indicates a value in the range of FCh to FEh

Data erratic, intermittent or incorrect

33

520509

RPM 4 Channel 3 Overcurrent

6

RPM 4 Channel 3 Overcurrent

Current above normal or grounded circuit

33520509RPM 4 Channel 3 Overcurrent
33520513RPM 4 Channel 5 Overcurrent14RPM 4 Channel 5 Analog Input Data

Unavailable

RPM 4 Channel 5 Analog Input Data

(PGN 65313 , Byte 7) indicates a value of

33

520513

RPM 4 Channel 5 Overcurrent

19

RPM 4 Channel 5 Analog Input

FFh

RPM 4 Channel 5 Analog Input Data

33

520514

RPM 4 Channel 6 Cab Switch

2

Invalid Data

RPM 4 Channel 6 Switch Error

(PGN 65313 , Byte 7) indicates a value in the range of FCh to FEh

Data erratic, intermittent or incorrect

33

520515

RPM 4 Channel 6 Overcurrent

6

RPM 4 Channel 6 Overcurrent

Current above normal or grounded circuit

33520515RPM 4 Channel 6 Overcurrent14RPM 4 Channel 6 Analog Input Data UnavailableRPM 4 Channel 6 Analog Input Data (PGN 65313 , Byte 8) indicates a value of FFh
33520515RPM 4 Channel 6 Overcurrent19RPM 4 Channel 6 Analog Input Invalid DataRPM 4 Channel 6 Analog Input Data (PGN 65313 , Byte 8) indicates a value in the range of FCh to FEh
33520540RPM 7 Channel 1 Cab Switch2RPM 7 Channel 1 Switch ErrorData erratic, intermittent or incorrect

33

520541

RPM 7 Channel 1 Overcurrent

6

RPM 7 Channel 1 Overcurrent

Current above normal or grounded circuit

33520541RPM 7 Channel 1 Overcurrent14RPM 7 Channel 1 Analog Input Data UnavailableRPM 7 Channel 1 Analog Input Data (PGN 65313 , Byte 3) indicates a value of FFh
33520541RPM 7 Channel 1 Overcurrent19RPM 7 Channel 1 Analog Input Invalid DataRPM 7 Channel 1 Analog Input Data (PGN 65313 , Byte 3) indicates a value in the range of FCh to FEh
33520542RPM 7 Channel 2 Cab Switch2RPM 7 Channel 2 Switch ErrorData erratic, intermittent or incorrect

33

520543

RPM 7 Channel 2 Overcurrent

6

RPM 7 Channel 2 Overcurrent

Current above normal or grounded circuit

33520543RPM 7 Channel 2 Overcurrent14RPM 7 Channel 2 Analog Input Data UnavailableRPM 7 Channel 2 Analog Input Data (PGN 65313 , Byte 4) indicates a value of FFh
33520543RPM 7 Channel 2 Overcurrent19RPM 7 Channel 2 Analog Input Invalid DataRPM 7 Channel 2 Analog Input Data (PGN 65313 , Byte 4) indicates a value in the range of FCh to FEh
33520544RPM 7 Channel 3 Cab Switch2RPM 7 Channel 3 Switch ErrorData erratic, intermittent or incorrect

33

520545

RPM 7 Channel 3 Overcurrent

6

RPM 7 Channel 3 Overcurrent

Current above normal or grounded circuit

33520545RPM 7 Channel 3 Overcurrent14RPM 7 Channel 3 Analog Input Data UnavailableRPM 7 Channel 3 Analog Input Data (PGN 65313 , Byte 5) indicates a value of FFh
33520545RPM 7 Channel 3 Overcurrent19RPM 7 Channel 3 Analog Input Invalid DataRPM 7 Channel 3 Analog Input Data (PGN 65313 , Byte 5) indicates a value in the range of FCh to FEh
33

33

520546

520547

RPM 7 Channel 4 Cab Switch

RPM 7 Channel 4 Overcurrent

2

6

RPM 7 Channel 4 Switch Error

RPM 7 Channel 4 Overcurrent

Data erratic, intermittent or incorrect

Current above normal or grounded circuit

33520547RPM 7 Channel 4 Overcurrent

33

520547

RPM 7 Channel 4 Overcurrent

19

Unavailable

RPM 7 Channel 4 Analog Input

(PGN 65313 , Byte 6) indicates a value of

FFh

RPM 7 Channel 4 Analog Input Data

33

520548

RPM 7 Channel 5 Cab Switch

2

Invalid Data

RPM 7 Channel 5 Switch Error

(PGN 65313 , Byte 6) indicates a value in the range of FCh to FEh

Data erratic, intermittent or incorrect

33

520549

RPM 7 Channel 5 Overcurrent

6

RPM 7 Channel 5 Overcurrent

Current above normal or grounded circuit

33

520549

RPM 7 Channel 5 Overcurrent

14

RPM 7 Channel 5 Analog Input Data

RPM 7 Channel 5 Analog Input Data

33

520549

RPM 7 Channel 5 Overcurrent

19

Unavailable

RPM 7 Channel 5 Analog Input

(PGN 65313 , Byte 7) indicates a value of FFh

RPM 7 Channel 5 Analog Input Data

33

520550

RPM 7 Channel 6 Cab Switch

2

Invalid Data

RPM 7 Channel 6 Switch Error

(PGN 65313 , Byte 7) indicates a value in the range of FCh to FEh

Data erratic, intermittent or incorrect

33

520551

RPM 7 Channel 6 Overcurrent

6

RPM 7 Channel 6 Overcurrent

Current above normal or grounded circuit

33520551RPM 7 Channel 6 Overcurrent

33

520551

RPM 7 Channel 6 Overcurrent

19

Unavailable

RPM 7 Channel 6 Analog Input

(PGN 65313 , Byte 8) indicates a value of

FFh

RPM 7 Channel 6 Analog Input Data

33

520552

TEM Aux 1 Int Switch

2

Invalid Data

TEM Aux 1 Int Switch Error

(PGN 65313 , Byte 8) indicates a value in the range of FCh to FEh

Data erratic, intermittent or incorrect

33520553TEM Aux 1 Switch2TEM Aux 1 Switch ErrorData erratic, intermittent or incorrect
33

33

520554

520555

TEM Aux 1 With Interlocks Switch

TEM Aux 10 Switch

2

2

TEM Aux 1 With Interlocks Switch Error

TEM Aux 10 Switch Error

Data erratic, intermittent or incorrect

Data erratic, intermittent or incorrect

33520556TEM Aux 11 Switch2TEM Aux 11 Switch ErrorData erratic, intermittent or incorrect
33520557TEM Aux 12 Switch2TEM Aux 12 Switch ErrorData erratic, intermittent or incorrect
33520558TEM Aux 13 Switch2TEM Aux 13 Switch ErrorData erratic, intermittent or incorrect
33520559TEM Aux 14 Switch2TEM Aux 14 Switch ErrorData erratic, intermittent or incorrect
33520560TEM Aux 15 Switch2TEM Aux 16 Switch ErrorData erratic, intermittent or incorrect
33520561TEM Aux 16 Switch2TEM Aux 16 Switch ErrorData erratic, intermittent or incorrect
33520562TEM Aux 17 Switch2TEM Aux 17 Switch ErrorData erratic, intermittent or incorrect
33520563TEM Aux 18 Switch2TEM Aux 18 Switch ErrorData erratic, intermittent or incorrect
33520564TEM Aux 2 Int Switch2TEM Aux 2 Int Switch ErrorData erratic, intermittent or incorrect
33520565TEM Aux 2 Switch2TEM Aux 2 Switch ErrorData erratic, intermittent or incorrect
33

33

520566

520567

TEM Aux 2 With Interlocks Switch

TEM Aux 3 Int Switch

2

2

TEM Aux 2 With Interlocks Switch Error

TEM Aux 3 Int Switch Error

Data erratic, intermittent or incorrect

Data erratic, intermittent or incorrect

33520568TEM Aux 3 Switch2TEM Aux 3 Switch ErrorData erratic, intermittent or incorrect
33

33

520569

520570

TEM Aux 3 With Interlocks Switch

TEM Aux 4 Switch

2

2

TEM Aux 3 With Interlocks Switch Error

TEM Aux 4 Switch Error

Data erratic, intermittent or incorrect

Data erratic, intermittent or incorrect

33

33

520571

520572

TEM Aux 4 With Interlocks Switch

TEM Aux 5 Switch

2

2

TEM Aux 4 With Interlocks Switch Error

TEM Aux 5 Switch Error

Data erratic, intermittent or incorrect

Data erratic, intermittent or incorrect

33520573TEM Aux 6 Switch2TEM Aux 6 Switch ErrorData erratic, intermittent or incorrect
33520574TEM Aux 7 Switch2TEM Aux 7 Switch ErrorData erratic, intermittent or incorrect
33520575TEM Aux 8 Switch2TEM Aux 8 Switch ErrorData erratic, intermittent or incorrect
33520576TEM Aux 9 Switch2TEM Aux 9 Switch ErrorData erratic, intermittent or incorrect
33520577TEM Aux Solenoid 15TEM Aux Solenoid 1 Under Current Or Open CircuitCurrent below normal or open circuit
33520577TEM Aux Solenoid 16TEM Aux Solenoid 1 OvercurrentCurrent above normal or grounded circuit
33

33

520578

520579

TEM Aux Solenoid 1 Switch

TEM Aux Solenoid 2

2

5

TEM Aux Solenoid 1 Switch Error

TEM Aux Solenoid 2 Under Current

Data erratic, intermittent or incorrect

Current below normal or open circuit

Or Open Circuit
33520579TEM Aux Solenoid 26TEM Aux Solenoid 2 OvercurrentCurrent above normal or grounded circuit
33

33

520580

520581

TEM Aux Solenoid 2 Switch

TEM Aux Solenoid 3

2

5

TEM Aux Solenoid 2 Switch Error

TEM Aux Solenoid 3 Under Current

Data erratic, intermittent or incorrect

Current below normal or open circuit

Or Open Circuit
33520581TEM Aux Solenoid 36TEM Aux Solenoid 3 OvercurrentCurrent above normal or grounded circuit
33

33

520582

520583

TEM Aux Solenoid 3 Switch

TEM Aux Solenoid 4

2

5

TEM Aux Solenoid 3 Switch Error

TEM Aux Solenoid 4 Under Current

Data erratic, intermittent or incorrect

Current below normal or open circuit

Or Open Circuit
33520583TEM Aux Solenoid 46TEM Aux Solenoid 4 OvercurrentCurrent above normal or grounded circuit
33

33

520584

520585

TEM Aux Solenoid 4 Switch

TEM Aux Solenoid 5

2

5

TEM Aux Solenoid 4 Switch Error

TEM Aux Solenoid 5 Under Current

Data erratic, intermittent or incorrect

Current below normal or open circuit

33

520585

TEM Aux Solenoid 5

6

Or Open Circuit

TEM Aux Solenoid 5 Overcurrent

Current above normal or grounded circuit

33

520586

TEM Aux Solenoid 5 Switch

2

TEM Aux Solenoid 5 Switch Error

Data erratic, intermittent or incorrect

33

520587

TEM Aux Solenoid 6

5

TEM Aux Solenoid 6 Under Current

Current below normal or open circuit

33

520587

TEM Aux Solenoid 6

6

Or Open Circuit

TEM Aux Solenoid 6 Overcurrent

Current above normal or grounded circuit

33

520588

TEM Aux Solenoid 6 Switch

2

TEM Aux Solenoid 6 Switch Error

Data erratic, intermittent or incorrect

33

520589

TEM Dual 1 Switch

2

TEM Dual 1 Switch Error

Data erratic, intermittent or incorrect

33

33

520590

520591

Data Link – Switch 12 Pack top

Data Link – Switch 12 Pack bottom

9

9

Switch 12-Pack Top Data Link Comm. Failure

Switch 12-Pack Bottom Data Link

Abnormal update rate

Abnormal update rate

33

520604

5V Sensor Supply

Comm. Failure

5V Sensor Supply Above Normal

Data valid but above normal operational

33

520604

5V Sensor Supply

1

Range

5V Sensor Supply Below Normal

range – most severe level

Data valid but below normal operational

33

520605

EGC Gauge Calibration

13

Range

Electronic Gauge Cluster checksum

range – most severe level

Defective EGC

33

520606

AGSP Gauge Calibration

13

error.

AGSP checksum error.

Defective AGSP

33520607SIC Gauge Calibration13SIC checksum error.Defective SIC
33

33

520644

520644

PPE3 AC Module Input Voltage

PPE3 AC Module Input Voltage

3

4

AC Module Overvoltage condition on High Voltage DC Bus.

AC Module Undervoltage condition

An Over Voltage Condition in the AC module (Inverter High Voltage Bus).

An Under Voltage Condition in the AC

A high Battery Cutout fault has occurred and the source of the fault is the AC module (inverter high voltage bus).

A low Battery Cutout fault has

33

520649

Air Horn Solenoid Command

5

on High Voltage DC Bus.

Air Horn Undercurrent

module (Inverter High Voltage Bus).

Open in Air Horn Circuit

occurred and the source of the fault is the AC module (inverter high voltage bus).
33

33

520649

520650

Air Horn Solenoid Command

Air Horn Switch / Headlight Interrupt

6Air Horn Overcurrent

Headlight Interrupt, Marker Interrupt

Short To Ground or Overload in Air Horn Circuit

AMH Request Circuit Open or Shorted

1600-B1

33

520650

Switch

Air Horn Switch / Headlight Interrupt

1

and Air Horn Switch reading above normal range

Headlight Interrupt, Marker Interrupt

High

Short To Ground in AMH Request Circuit

1600-B1

Switchand Air Horn Switch reading below

normal range

33

33

520651

520652

Air Shield Lights Command

Auxiliary High Current Load Relay

6

5

Command
33520652Auxiliary High Current Load Relay6

33

520653

Command

Auxiliary High Current Load Switch

2

33

33

520654

520654

Auxiliary Transmission Constant Supply Air Solenoid Command

Auxiliary Transmission Constant

5

6

33

520655

Supply Air Solenoid Command

Auxiliary Transmission High Range

5

33

520655

Air Solenoid Command

Auxiliary Transmission High Range

6

33

520656

Air Solenoid Command

Auxiliary Transmission Neutral Air

5

33

520656

Solenoid Command

Auxiliary Transmission Neutral Air

6

33

520657

Solenoid Command

Auxiliary Transmission Range Switch

2

33

520658

Body Equipment Hydraulic Power

5

33

520658

Auxiliary Pump Inhibit Command

Body Equipment Hydraulic Power

6

33

520659

Auxiliary Pump Inhibit Command Bus Amber Signal Light 1 Command

5

33520659Bus Amber Signal Light 1 Command6
33

33

520660

520660

Bus Amber Signal Light 2 Command

Bus Amber Signal Light 2 Command

5

6

33

520661

Bus Amber Signal Light 3 Command

5

33

520661

Bus Amber Signal Light 3 Command

6

33

520662

Bus Amber Signal Light 4 Command

5

33

520662

Bus Amber Signal Light 4 Command

6

33

520663

Bus Red Signal Light 4 Command

5

33520663Bus Red Signal Light 4 Command6
33520664Bus Crossing Gate Command5

33

520664

Bus Crossing Gate Command

6

33

33

520665

520665

Bus Passenger Door Close Relay Command

Bus Passenger Door Close Relay

5

6

33

520667

Command

Bus Passenger Door Control Switch

2
33520667Bus Passenger Door Control Switch 21
33

33

520668

520668

Bus Passenger Door Open Relay Command

Bus Passenger Door Open Relay

5

6

33

520669

Command

Bus Red Signal Light 1 Command

5

33520669Bus Red Signal Light 1 Command6
33520670Bus Red Signal Light 2 Command5
33520670Bus Red Signal Light 2 Command6
33520671Bus Red Signal Light 3 Command5
33520671Bus Red Signal Light 3 Command6
33520672Bus Stop Arm Command5

33

520672

Bus Stop Arm Command

6

33520673Cab Dome Light 1 Command5
33520673Cab Dome Light 1 Command6

33

520674

Cab Dome Light 1 Switch

2

33

520675

Cab Dome Light 2 Command

5

33

520675

Cab Dome Light 2 Command

6

33

520676

Cab Dome Light 2 Switch

2

33520677Cab Floor Light Command5

33

520677

Cab Floor Light Command

6

33520678Cab Window Motor 1 Status7
33

33

520679

520680

Cab Window Motor 2 Status

Cab Window Motor 3 Status

7

7

Passenger Window Motor Failure

Rear Driver Window Motor Failure

Passenger Door Pod Module Window

Motor Has Short or Open or Window is Jammed

Rear Driver Door Pod Module Window

33

520681

Cab Window Motor 4 Status

7

Rear Passenger Window Motor

Motor Has Short or Open or Window is Jammed

Rear Passenger Door Pod Module

33

520682

Compression Brake Switch Indicator

5

Failure

Compression Brake Indicator output

Window Motor Has Short or Open or Window is Jammed

Current below normal or open circuit

Lamp Commandis Under Current Or Open Circuit
33

33

520682

520683

Compression Brake Switch Indicator Lamp Command

Door Control Module 1 Status

6

7

Compression Brake Indicator is over current

Driver Door Pod Module Failure

Current above normal or grounded circuit

Defective Driver Door Pod Module

33520684Door Control Module 2 Status7Passenger Door Pod Module FailureDefective Passenger Door Pod Module
33520685Door Control Module 3 Status7Rear Driver Door Pod Module FailureDefective Rear Driver Door Pod Module

33

520686

Door Control Module 4 Status

7

Rear Passenger Door Pod Module

Defective Rear Passenger Door Pod

33

520687

Engine Remote Start Command

5

Failure

Remote Start Relay Under Current

Module

Open Circuit in Remote Bunk Start Circuit

33

520687

Engine Remote Start Command

6

Or Open Circuit

Remote Start Relay Over Current

Short To Ground in Remote Bunk Start

33

520688

Engine Remote Stop Command

5

Remote Stop Relay Under Current

Circuit

Open Circuit in Remote Bunk Stop Circuit

33

520688

Engine Remote Stop Command

6

Or Open Circuit

Remote Stop Relay Over Current

Short To Ground in Remote Bunk Stop

33

520689

Exterior Lamp Check Switch

2

Exterior Lamp Check Switch Error

Circuit

Data erratic, intermittent or incorrect

33

33

520690

520691

Fifth Wheel Slide Latch Solenoid Command

Fog Light 2 Command

2

5

Fifth Wheel Slide Switch Error

Right Fog Light Undercurrent

Faulty Switch Actuator or Microswitch for Fifth Wheel Slide Switch

Open in Right Fog Light Circuit

33

33

520691

520692

Fog Light 2 Command

Fuel Transfer Pump Command

6

5

Right Fog Light Overcurrent

Fuel Transfer Pump Relay Under

Short To Ground or Overload in Right Fog Light Output Circuit

Open Circuit in Fuel Transfer Pump

33

520692

Fuel Transfer Pump Command

6

Current Or Open Circuit

Fuel Transfer Pump Relay Short To

Circuit

Short To Ground or Overload in Fuel

33

520693

Headlamp High Beam Command 1

5

Ground

Left High Beam Open Circuit

Transfer Pump Circuit

Open in Left High Beam Circuit

33

33

520693

520694

Headlamp High Beam Command 1

Headlamp High Beam Command 2

6

5

Left High Beam Short To Ground

Right High Beam Open Circuit

Short To Ground or Overload in Left High Beam Circuit

Open in Right High Beam Circuit

33

33

520694

520695

Headlamp High Beam Command 2

HVAC Mode Control Actuator

6

2

Right High Beam Short To Ground

HVAC Control Head Mode Fault

Short To Ground or Overload in Right High Beam Circuit

HVAC Motor in Wrong Position or

33

520696

HVAC Recirculation Door Control

2

DM1

HVAC Control Head Air Inlet DM1

Jammed

HVAC Motor in Wrong Position or

33

520697

Actuator

HVAC System Controller

9

HVAC Control Head Circuit Failed To

Jammed

Abnormal update rate

33

520698

Ignition Signal

2

Communicate With The BC Key State Ignition Signal Error

Open in Ignition Signal Input Circuit To BC

33

33

520703

520703

Lift Gate Power Control Enable Command

Lift Gate Power Control Enable

5

6

Lift Gate Enable Undercurrent

Lift Gate Enable Overcurrent

Current below normal or open circuit

Current above normal or grounded circuit

33

520704

Command

Lift Gate Power Control Switch

2

Lift Gate Switch Error

Data erratic, intermittent or incorrect

33

33

520705

520705

Load Shed OFF Command

Load Shed OFF Command

5

6

Load Shed OFF Relay Under Current Or Open Circuit

Load Shed OFF Relay Over Current

Open Circuit in Load Shed OFF Circuit

Short To Ground in Load Shed OFF

33

520706

Load Shed ON Command

5

Load Shed ON Relay Under Current

Circuit

Open Circuit in Load Shed ON Circuit

33

520706

Load Shed ON Command

6

Or Open Circuit

Load Shed ON Relay Over Current

Short To Ground in Load Shed ON Circuit

33

33

520707

520708

Loop Time Exceeded

Marker Interrupt Switch

14

2

BC Internal Fault, Main Loop Time Exceeded

Marker Interrupt Switch Failure

Software Configuration Too Big

Data erratic, intermittent or incorrect

33520709Mirror Heat 2 Command5Right Mirror Heat UndercurrentOpen in Right Mirror Heat Circuit
33

33

520709

520711

Mirror Heat 2 Command

Primary Air Tank Drain Valve

6

5

Right Mirror Heat Overcurrent

Humphrey Valve Primary Tank

Short To Ground or Overload in Right Mirror Heat Circuit

Current below normal or open circuit

33

520711

Actuator Command

Primary Air Tank Drain Valve

6

Solenoid Under Current Or Open Circuit

Humphrey Valve Primary Tank

Current above normal or grounded circuit

33

520712

Actuator Command

Primary Tank Drain Valve Switch

2

Solenoid Short To Ground

Humphrey Valve Primary Tank

Data erratic, intermittent or incorrect

33

520713

Rear HVAC Blower Speed Control

2

Switch Error

Rear HVAC Blower Speed Control

Faulty Switch Actuator or Microswitch for

SwitchSwitch ErrorRear HVAC Blower Speed Control Switch
33520714Rear HVAC Temperature Control Switch2Rear HVAC Temperature Control Switch ErrorFaulty Switch Actuator or Microswitch for Rear HVAC Temperature Control Switch
33

33

520715

520715

Secondary Tank Drain Valve Actuator Command

Secondary Tank Drain Valve

5

6

Humphrey Valve Secondary Tank Solenoid Under Current Or Open Circuit

Humphrey Valve Secondary Tank

Current below normal or open circuit

Current above normal or grounded circuit

33

520716

Actuator Command

Secondary Tank Drain Valve Switch

2

Solenoid Short To Ground

Humphrey Valve Secondary Tank

Data erratic, intermittent or incorrect

33

520720

Snow Plow Light Left Forward

5

Switch Error

Left Plow Light Relay Under Current

Current below normal or open circuit

33

520720

Lighting Relay Command

Snow Plow Light Left Forward

6

Or Open Circuit

Left Plow Light Relay Circuit Short

Current above normal or grounded circuit

33

520721

Lighting Relay Command

Snow Plow Light Right Forward

5

To Ground

Right Plow Light Relay Under

Current below normal or open circuit

33

520721

Lighting Relay Command

Snow Plow Light Right Forward

6

Current Or Open Circuit

Right Plow Light Relay Circuit Short

Current above normal or grounded circuit

Lighting Relay CommandTo Ground
33520722Snow Plow Lighting Mode Switch 2Snow Plow Switch ErrorData erratic, intermittent or incorrect
33520725Supply Air Tank Drain Valve Actuator 5 CommandHumphrey Valve Wet Tank Solenoid Under Current Or Open CircuitCurrent below normal or open circuit
33

33

520725

520726

Supply Air Tank Drain Valve Actuator 6 Command

Supply Air Tank Drain Valve Switch 2

Humphrey Valve Wet Tank Solenoid Short To Ground

Humphrey Valve Wet Tank Switch

Current above normal or grounded circuit

Data erratic, intermittent or incorrect

33

520727

Trailer Auxiliary Power Switch 2Error

Auxiliary Switch Error

Faulty Switch Actuator or Micro switch for

33

520728

Trailer Left Turn Light Relay 5

Trailer Left Turn Lamp Relay Under

Auxiliary Trailer Switch

Open Circuit in Trailer Left Turn Lamp

33

520728

Command

Trailer Left Turn Light Relay 6

Current Or Open Circuit

Trailer Left Turn Lamp Relay Over

Circuit

Short To Ground in Trailer Left Turn

33

520729

Command

Trailer License Plate Light Relay 5

Current

Trailer License Plate Lamp Relay

Lamp Circuit

Open Circuit in Trailer License Plate

33

520729

Command

Trailer License Plate Light Relay 6

Under Current Or Open Circuit

Trailer License Plate Lamp Relay

Lamp Circuit

Short To Ground in Trailer License Plate

33

520730

Command

Trailer Marker Light Relay Command 5

Over Current

Trailer Marker Lamp Relay Under

Lamp Circuit

Open Circuit in Trailer Marker Lamp

33

520730

Trailer Marker Light Relay Command 6

Current Or Open Circuit

Trailer Marker Lamp Relay Over

Circuit

Short To Ground in Trailer Marker Lamp

33

520731

Trailer Right Turn Light Relay 5Current

Trailer Right Turn Lamp Relay Under

Circuit

Open Circuit in Trailer Right Turn Lamp

33

520731

Command

Trailer Right Turn Light Relay 6

Current Or Open Circuit

Trailer Right Turn Lamp Relay Over

Circuit

Short To Ground in Trailer Right Turn

33

520732

Command

Trailer Stop Light Relay Command 5

Current

Trailer Stop Lamp Relay Under

Lamp Circuit

Open Circuit in Trailer Stop Lamp Circuit

33

520732

Trailer Stop Light Relay Command 6

Current Or Open Circuit

Trailer Stop Lamp Relay Over

Short To Ground in Trailer Stop Lamp

33

520733

Transfer Case Blower Switch 2Current

Transfer Case Switch Error

Circuit

Data erratic, intermittent or incorrect

33

520734

Transfer Case Front Driveline 5

Transfer Case Solenoid D Under

Current below normal or open circuit

33

520734

Solenoid Command

Transfer Case Front Driveline 6

Current Or Open Circuit

Transfer Case Solenoid D Short To

Current above normal or grounded circuit

33

520735

Solenoid Command

Transfer Case High Range Solenoid 5

Ground

Transfer Case Solenoid C Under

Current below normal or open circuit

33

520735

Command

Transfer Case High Range Solenoid 6

Current Or Open Circuit

Transfer Case Solenoid C Short To

Current above normal or grounded circuit

33

520736

Command

Transfer Case Low Range Solenoid 5

Ground

Transfer Case Solenoid A Under

Current below normal or open circuit

33

520736

Command

Transfer Case Low Range Solenoid 6

Current Or Open Circuit

Transfer Case Solenoid A Short To

Current above normal or grounded circuit

33

520737

Command

Transfer Case Neutral Solenoid 5

Ground

Transfer Case Solenoid B Under

Current below normal or open circuit

33

520737

Command

Transfer Case Neutral Solenoid 6

Current Or Open Circuit

Transfer Case Solenoid B Short To

Current above normal or grounded circuit

33

520738

Command

Transfer Case PTO Solenoid 5

Ground

Air Solenoid B Packs Relay Under

Current below normal or open circuit

33

520738

Command

Transfer Case PTO Solenoid 6

Current Or Open Circuit

Air Solenoid B Packs Relay Over

Current above normal or grounded circuit

33

520739

Command

Transfer Case PTO Solenoid Relay 5

Current

Transfer Case PTO Solenoid Under

Current below normal or open circuit

33

520739

Command

Transfer Case PTO Solenoid Relay 6

Current Or Open Circuit

Transfer Case PTO Solenoid Short

Current above normal or grounded circuit

33

520740

Command

Transfer Case PTO Switch 2

To Ground

Transfer Case PTO Switch Error

Data erratic, intermittent or incorrect

33

520741

Transfer Case Range Switch 2

Transfer Case Switch Error

Data erratic, intermittent or incorrect

33

33

520742

520742

Transfer Case Rear Driveline 5

Solenoid Command

Transfer Case Rear Driveline 6

Air Solenoid A Packs Relay Under Current Or Open Circuit

Air Solenoid A Packs Relay Over

Current below normal or open circuit

Current above normal or grounded circuit

33

520743

Solenoid Command

Transmission PTO Engagement 5

Current

TEM PTO Engagement Relay Under

Current below normal or open circuit

33

520743

Actuator Command

Transmission PTO Engagement 6

Current Or Open Circuit

TEM PTO Engagement Relay

Current above normal or grounded circuit

33

520744

Actuator Command

Transmission PTO Retention 5

Overcurrent

TEM PTO Retaining Solenoid

Current below normal or open circuit

33

520744

Actuator Command

Transmission PTO Retention 6

Undercurrent

TEM PTO Retaining Solenoid

Current above normal or grounded circuit

33

520745

Actuator Command

Transmission PTO Switch 2

Overcurrent

TEM PTO Engagement Switch Error

Data erratic, intermittent or incorrect

33

520746

Transmission Retarder Enable 2

Transmission Retarder On/Off switch

Data erratic, intermittent or incorrect

33

520747

Switch

Two Speed Axle Actuator 5

Failure

Two Speed Axle Solenoid Relay

Current below normal or open circuit

33

520747

Two Speed Axle Actuator 6Under Current Or Open Circuit

Two Speed Axle Solenoid Relay

Current above normal or grounded circuit

33

520748

Wiper Motor Power 5Short To Ground

Wiper Motor Undercurrent

Open in Wiper Motor Circuit

33

33

520748

520749

Wiper Motor Power 6

Mirror Heater 2

Wiper Motor Overcurrent

Mirror Heat Switch Error

Short To Ground or Overload in Wiper Motor Circuit

Faulty Switch Actuator or Microswitch for

33

520750

Fog Lights Left Command 5

Left Fog Light Undercurrent

Mirror Heat Switch

Open in Left Fog Light Circuit

33

33

520750

520751

Fog Lights Left Command 6

ICON Freedomline Gear Indicator 5

Left Fog Light Overcurrent

ICON Freedomline Gear Indicator

Short To Ground or Overload in Left Fog Light Circuit

Open Circuit in ICON Freedomline Gear

1601-F9

33

520751

ICON Freedomline Gear Indicator 6

Relay Under Current

ICON Freedomline Gear Indicator

Indicator Circuit

Short To Ground in ICON Freedomline

1601-F9

33

520752

Electrical Accessory Power Switch 2

Relay Over Current

Electrical Accessory Power Switch

Gear Indicator Circuit

Faulty Switch Actuator or Microswitch for

33

520753

Transmission Economy Mode Switch 2

Error

Transmission Economy Mode Switch

Electrical Accessory Power Switch

Faulty Switch Actuator or Microswitch for

ErrorTransmission Economy Mode Switch
33

33

520754

520754

Universal Air Solenoid Relay Driver 2 5 Universal Air Solenoid Relay Driver 2 Open Circuit or Defective Solenoid Under Current Or Open Circuit

Universal Air Solenoid Relay Driver 2 6 Universal Air Solenoid Relay Driver 2 Short To Ground or Defective Solenoid

33

520755

Over Current

Universal Air Solenoid Relay Driver 3 5 Universal Air Solenoid Relay Driver 3 Open Circuit or Defective Solenoid

Under Current Or Open Circuit
33520755Universal Air Solenoid Relay Driver 36Universal Air Solenoid Relay Driver 3Short To Ground or Defective Solenoid
Over Current
33520756Universal Air Solenoid Relay Driver 45Universal Air Solenoid Relay Driver 4Open Circuit or Defective Solenoid
Under Current Or Open Circuit
33520756Universal Air Solenoid Relay Driver 46Universal Air Solenoid Relay Driver 4Short To Ground or Defective Solenoid
Over Current
33520757Universal Air Solenoid Relay Driver 55Universal Air Solenoid Relay Driver 5Open Circuit or Defective Solenoid
Under Current Or Open Circuit
33520757Universal Air Solenoid Relay Driver 56Universal Air Solenoid Relay Driver 5Short To Ground or Defective Solenoid
Over Current
33520758Universal Air Solenoid Relay Driver 65Universal Air Solenoid Relay Driver 6Open Circuit or Defective Solenoid
Under Current Or Open Circuit
33520758Universal Air Solenoid Relay Driver 66Universal Air Solenoid Relay Driver 6Short To Ground or Defective Solenoid
Over Current
33520759Universal Air Solenoid Relay Driver 75Universal Air Solenoid Relay Driver 7Open Circuit or Defective Solenoid
Under Current Or Open Circuit
33520759Universal Air Solenoid Relay Driver 76Universal Air Solenoid Relay Driver 7Short To Ground or Defective Solenoid
Over Current
33520760Universal Air Solenoid Relay Driver 85Universal Air Solenoid Relay Driver 8Open Circuit or Defective Solenoid
Under Current Or Open Circuit
33520760Universal Air Solenoid Relay Driver 86Universal Air Solenoid Relay Driver 8Short To Ground or Defective Solenoid
Over Current
33520761Universal Air Solenoid Relay Driver 95Universal Air Solenoid Relay Driver 9Open Circuit or Defective Solenoid
Under Current Or Open Circuit
33520761Universal Air Solenoid Relay Driver 96Universal Air Solenoid Relay Driver 9Short To Ground or Defective Solenoid
Over Current
33520762Universal Air Solenoid Relay Driver5Universal Air Solenoid Relay DriverOpen Circuit or Defective Solenoid
1010 Under Current Or Open Circuit
33520762Universal Air Solenoid Relay Driver6Universal Air Solenoid Relay DriverShort To Ground or Defective Solenoid
1010 Over Current
33520763Universal Air Solenoid Relay Driver5Universal Air Solenoid Relay DriverOpen Circuit or Defective Solenoid
1111 Under Current Or Open Circuit
33520763Universal Air Solenoid Relay Driver6Universal Air Solenoid Relay DriverShort To Ground or Defective Solenoid
1111 Over Current
33520764Universal Air Solenoid Relay Driver5Universal Air Solenoid Relay DriverOpen Circuit or Defective Solenoid
1212 Under Current Or Open Circuit
33520764Universal Air Solenoid Relay Driver6Universal Air Solenoid Relay DriverShort To Ground or Defective Solenoid
1212 Over Current
33520765Universal Air Solenoid Relay Driver5Universal Air Solenoid Relay DriverOpen Circuit or Defective Solenoid
1313 or Spare Relay Driver 4 Under
Current Or Open Circuit
33520765Universal Air Solenoid Relay Driver6Universal Air Solenoid Relay DriverShort To Ground or Defective Solenoid
1313 or Spare Relay Driver 4 Over
Current
33520766Universal Air Solenoid Relay Driver5Universal Air Solenoid Relay DriverOpen Circuit or Defective Solenoid
1414 or Spare Relay Driver 3 Under
Current Or Open Circuit
33520766Universal Air Solenoid Relay Driver6Universal Air Solenoid Relay DriverShort To Ground or Defective Solenoid
1414 or Spare Relay Driver 3 Over
Current
33520767Universal Air Solenoid Relay Driver5Universal Air Solenoid Relay DriverOpen Circuit or Defective Solenoid
1515 Under Current Or Open Circuit
33520767Universal Air Solenoid Relay Driver6Universal Air Solenoid Relay DriverShort To Ground or Defective Solenoid
1515 Over Current
33520768Universal Air Solenoid Relay Driver5Universal Air Solenoid Relay DriverOpen Circuit or Defective Solenoid
1616 Under Current Or Open Circuit
33520768Universal Air Solenoid Relay Driver6Universal Air Solenoid Relay DriverShort To Ground or Defective Solenoid
1616 Over Current
33520769BUS Spare Relay Driver One5Spare Relay Driver One UnderOpen Circuit
Current Or Open Circuit
33520769BUS Spare Relay Driver One6Spare Relay Driver One OverShort To Ground
Current
33520770BUS Spare Relay Driver Two5Spare Relay Driver Two UnderOpen Circuit
Current Or Open Circuit
33520770BUS Spare Relay Driver Two6Spare Relay Driver Two OverShort To Ground
Current
33520771PPE3 AC Module Output Current6AC Module has shutdown due toA Surge may have occurred for a while in An Overload condition has been
overload condition.the Vehicle AC bus for a long time (The detected in the AC module and the
inverter supplies additional current to the Vehicle AC bus is shutdown.
load).
33520772PPE3 Fuse Open31PPE3 Fuse Open.Load exceeded rating. PPE3 module Fuse is Open.
33520773PPE3 AC Module Temperature0AC module over temperatureAn overcurrent condition in the Vehicle AC An Over temperature fault has
condition.Bus might have caused an over occurred and the source of the fault
temperature. is the AC module (inverter high
voltage bus).
33520774PPE3 DC Module Temperature0DC module over temperatureAn overcurrent condition in the Vehicle DC An Over Temperature fault has
condition.Bus might have caused an over occurred and the source of the fault
temperature. is the DC regulator (Vehicle Battery
Bus).
33520775Anti Theft Ignition Relay5Anti Theft Ignition Relay UnderOpen circuit in Anti Theft Ignition Circuit1601-E4
Current Or Open Circuit
33520775Anti Theft Ignition Relay6Anti Theft Ignition Relay over currentShort to Ground in Anti Theft Ignition1601-E4
Circuit
33520776Anti Theft Engine Stop Switch2Anti Theft Engine Stop Switch ErrorFaulty Switch Actuator or Microswitch for
Anti Theft Engine Stop Switch
33520777Anti Theft Switch 02Anti Theft Switch 0 ErrorFaulty Switch Actuator or Microswitch for
Anti Theft Switch 0
33520778Anti Theft Switch 12Anti Theft Switch 1 ErrorFaulty Switch Actuator or Microswitch for
Anti Theft Switch 1
33520779Anti Theft Switch 22Anti Theft Switch 2 ErrorFaulty Switch Actuator or Microswitch for
Anti Theft Switch 2
33520780Anti Theft Switch 32Anti Theft Switch 3 ErrorFaulty Switch Actuator or Microswitch for
Anti Theft Switch 3
33520781Anti Theft Switch 42Anti Theft Switch 4 ErrorFaulty Switch Actuator or Microswitch for
Anti Theft Switch 4
33520788TEG Aux Relay Driver 15TEG Aux Relay Driver Output 1Current below normal or open circuit1601-E16
Under Current Or Open Circuit
33520788TEG Aux Relay Driver 16TEG Aux Relay Driver Output 1Current above normal or grounded circuit1601-E16
Overcurrent
33520799TEG Aux Relay Driver 25TEG Aux Relay Driver Output 2Current below normal or open circuit1601-E12
Under Current Or Open Circuit
33520799TEG Aux Relay Driver 26TEG Aux Relay Driver Output 2Current above normal or grounded circuit1601-E12
Overcurrent
33

33

520800

520800

Transmission Economy Mode output

Transmission Economy Mode output

5

6

Transmission Economy Mode Relay

Driver Output Under Current Or Open Circuit

Transmission Economy Mode Relay

Current below normal or open circuit

Current above normal or grounded circuit

1601-F11

1601-F11

33

520801

Transmission Auto Neutral Output

5

Driver Output Overcurrent

Transmission Auto Neutral Relay

Current below normal or open circuit

1601-E3

33

520801

Transmission Auto Neutral Output

6

Driver Output Under Current Or Open Circuit

Transmission Auto Neutral Relay

Current above normal or grounded circuit

1601-E3

33

520802

Aux Air Susp Solenoid Command

5

Driver Output Overcurrent

Aux Air Suspension Solenoid Under

Open Circuit or Defective Solenoid

1602-E12

33

520802

Aux Air Susp Solenoid Command

6

Current or Open Circuit

Aux Air Suspension Solenoid output

Short To Ground or Defective Solenoid

1602-E12

33

520803

Park Brake Relay Command

5

Over Current

Park Brake Relay Under Current or

Open Circuit or Defective Solenoid

1601-E7

33

520803

Park Brake Relay Command

6

Open Circuit

Park Brake Relay Over Current

Short To Ground or Defective Solenoid

1601-F1

(BUS) 1601-E7

33

520804

RKE Option Door Pod Not Present

14

Missing Remote Keyless entry door

Expected RKE door pod is not present or

Not available

1601-F1 (BUS)

Not

podin the wrong slot or bad door pod harnessavailable
33520806Fifth Wheel Jaw Unlock Sol2 Command5Fifth Wheel Jaw Unlock Solenoid2 output Under Current or Open CircuitOpen Circuit or Defective Solenoid
33

33

520806

520807

Fifth Wheel Jaw Unlock Sol2 Command

Engine RPM Interrupt Output

6

5

Fifth Wheel Jaw Unlock Solenoid2 output Overcurrent

Engine RPM Interrupt Relay Driver

Short To Ground or Defective Solenoid

Current below normal or open circuit

1601-F3

33

520807

Engine RPM Interrupt Output

6

Output Under Current Or Open Circuit

Engine RPM Interrupt Relay Driver

Current above normal or grounded circuit

1601-F3

33

520813

Aux_Relay_Driver_3

5

Output Overcurrent

Relay Driver 3 Undercurrent

Open in Relay Driver 3 Circuit

1601-E3

33

33

520813

520814

Aux_Relay_Driver_3

Aux_Relay_Driver_4

6

5

Relay Driver 3 Overcurrent

Relay Driver 4 Undercurrent

Short To Ground or Overload in Relay Driver 3 Output Circuit

Open in Relay Driver 4 Circuit

1601-E3

1601-E4

33

33

520814

520815

Aux_Relay_Driver_4

Sixth Gear Disable Relay

6

5

Relay Driver 4 Overcurrent

Sixth Speed Disable Relay is

Short To Ground or Overload in Relay Driver 4 Output Circuit

Open Circuit on the Sixth Gear Disable

1601-E4

1601-E4

33

520815

Sixth Gear Disable Relay

6

Undercurrent or Open Circuit

Sixth Speed Disable Relay is

Relay

Short to Battery on the Sixth Speed

33

520816

Sixth Gear Disable LED

5

Overcurrent

Sixth Gear Disable LED Relay Driver

Disable Relay

Open Circuit on the Sixth Gear Disable

33

520816

Sixth Gear Disable LED

6

Output is Under Current or Open Circuit

Sixth Gear Disable LED Relay Driver

LED Relay Driver

Short to Battery on the Sixth Speed

33

520817

Sixth Gear Disable Switch

2

Output is Over Current

Sixth Speed Disable Switch status is

Disable LED Relay

Fault Switch Actuator or Micro switch for

33

520818

HEV ePTO Pressure Feedback

invalid

HEV ePTO Pressure Feedback

Sensor reading above normal rangeHigh or faulty sensor system
33

33

520818

520819

HEV ePTO Pressure Feedback

Universal Air Solenoid Relay Driver 1

1

5

HEV ePTO Pressure Feedback Sensor reading below normal range

Universal Air Solenoid Relay Driver 1

HEV ePTO Pressure Feedback Shorted to Ground or Open Circuit or faulty sensor system

Open Circuit or Defective Solenoid

33

520819

Universal Air Solenoid Relay Driver 1

6

Under Current Or Open Circuit

Universal Air Solenoid Relay Driver 1

Short To Ground or Defective Solenoid

33

520820

Wig-Wag Switch

2

Over Current

Wig-Wag Switch Error

Faulty Switch Actuator or Microswitch for

33

520822

Remote Condenser Electric Fan

5

Electric Fan A output Under Current

Wig-Wag Switch

Open Circuit in Electric Fan A output

Not available

Not

33

520822

Control A

Remote Condenser Electric Fan

6

or Open Circuit

Electric Fan A output Short-Circuit

Short circuit detected in Electric Fan A

Electric Fan A can be configured for

available

Not

33

520823

Control A

Remote Condenser Electric Fan

5

Electric Fan B output Under Current

output

Open Circuit in Electric Fan B output

two different outputs:

Low Side Driver RD4 – Fault is reported when Short to Battery condition is detected

High Side Driver RD31 – Fault is reported when Short to Ground condition is Detected

Not available

available

Not

33

520823

Control B

Remote Condenser Electric Fan

6

or Open Circuit

Electric Fan B output Short-Circuit

Short circuit detected in Electric Fan B

Electric Fan B can be configured for

available

Not

33

520839

Control B

Transfer Case Output Shaft

5

Transfer Case Output Shaft

output

Open in Odometer Shutoff Relay Circuit

two different outputs:

Low Side Driver RD7 – Fault is reported when Short to Battery condition is detected

High Side Driver RD32 – Fault is reported when Short to Ground condition is Detected

available

33

520839

Odometer Shutoff Relay

Transfer Case Output Shaft

6

Odometer Shutoff Relay Undercurrent

Transfer Case Output Shaft

Short or Overload in odometer Shutoff

1601-E4

Odometer Shutoff RelayOdometer Shutoff Relay OvercurrentRelay Circuit
33

33

520840

520841

Switch 12-Pack Location 7

Switch 12-Pack Location 8

13

13

Unexpected switch in 12-pack (MID

5) bottom row position 1 from left (Switch 7 of 12)

Unexpected switch in 12-pack (MID

Switch actuator installed or bad microswitch in location configured as empty

Switch actuator installed or bad

Not available

Not available

Not available

Not

33

520842

Switch 12-Pack Location 9

13

5) bottom row position 2 from left (Switch 8 of 12)

Unexpected switch in 12-pack (MID

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520843

Switch 12-Pack Location 10

13

5) bottom row position 3 from left (Switch 9 of 12)

Unexpected switch in 12-pack (MID

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520844

Switch 12-Pack Location 11

13

5) bottom row position 4 from left (Switch 10 of 12)

Unexpected switch in 12-pack (MID

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

5) bottom row position 5 from left

(Switch 11 of 12)

microswitch in location configured as

empty

available
33520845Switch 12-Pack Location 1213Unexpected switch in 12-pack (MID

5) bottom row position 6 from left (Switch 12 of 12)

Switch actuator installed or bad

microswitch in location configured as empty

Not availableNot

available

33

33

520846

520847

Switch 12-Pack Location 1

Switch 12-Pack Location 2

13

13

Unexpected switch in 12-pack (MID

6) top row position 1 from left (Switch 1 of 12)

Unexpected switch in 12-pack (MID

Switch actuator installed or bad microswitch in location configured as empty

Switch actuator installed or bad

Not available

Not available

Not available

Not

33

520848

Switch 12-Pack Location 3

13

6) top row position 2 from left (Switch 2 of 12)

Unexpected switch in 12-pack (MID

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520849

Switch 12-Pack Location 4

13

6) top row position 3 from left (Switch 3 of 12)

Unexpected switch in 12-pack (MID

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520850

Switch 12-Pack Location 5

13

6) top row position 4 from left (Switch 4 of 12)

Unexpected switch in 12-pack (MID

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520851

Switch 12-Pack Location 6

13

6) top row position 5 from left (Switch 5 of 12)

Unexpected switch in 12-pack (MID

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520852

Switch 6-Pack #2 Location 1

13

6) top row position 6 from left (Switch 6 of 12)

Unexpected switch in switchpack 2

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520853

Switch 6-Pack #2 Location 2

13

(MID 7) position 1 from left (Switch 1

of 6)

Unexpected switch in switchpack 2

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520854

Switch 6-Pack #2 Location 3

13

(MID 7) position 2 from left (Switch 2

of 6)

Unexpected switch in switchpack 2

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520855

Switch 6-Pack #2 Location 4

13

(MID 7) position 3 from left (Switch 3

of 6)

Unexpected switch in switchpack 2

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520856

Switch 6-Pack #2 Location 5

13

(MID 7) position 4 from left (Switch 4

of 6)

Unexpected switch in switchpack 2

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520857

Switch 6-Pack #2 Location 6

13

(MID 7) position 5 from left (Switch 5

of 6)

Unexpected switch in switchpack 2

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520858

Switch 6-Pack #1 Location 1

13

(MID 7) position 6 from left (Switch 6

of 6)

Unexpected switch in switchpack 1

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520859

Switch 6-Pack #1 Location 2

13

(MID 15) position 1 from left (Switch 1 of 6)

Unexpected switch in switchpack 1

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520860

Switch 6-Pack #1 Location 3

13

(MID 15) position 2 from left (Switch 2 of 6)

Unexpected switch in switchpack 1

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520861

Switch 6-Pack #1 Location 4

13

(MID 15) position 3 from left (Switch 3 of 6)

Unexpected switch in switchpack 1

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520862

Switch 6-Pack #1 Location 5

13

(MID 15) position 4 from left (Switch 4 of 6)

Unexpected switch in switchpack 1

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520863

Switch 6-Pack #1 Location 6

13

(MID 15) position 5 from left (Switch 5 of 6)

Unexpected switch in switchpack 1

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520864

Rear Axle Load Distribution Switch

2

(MID 15) position 6 from left (Switch 6 of 6)

Rear Axle Load Distribution Switch

microswitch in location configured as empty

Faulty Switch Actuator or Microswitch for

Not available

available

Not

33

520865

Rear Axle Load Distribution Solenoid

5

Error

Rear Axle Load Distribution A Relay

Rear Axle Load Distribution Switch

Open Circuit or Defective Solenoid

Not available

available

Not

AUnder Current Or Open Circuitavailable
33

33

520865

520866

Rear Axle Load Distribution Solenoid A

Rear Axle Load Distribution Solenoid

6

5

Rear Axle Load Distribution A Relay Short To Ground

Rear Axle Load Distribution B Relay

Short To Ground or Defective Solenoid

Open Circuit or Defective Solenoid

Not available

Not available

Not available Not
BUnder Current Or Open Circuitavailable
33

33

520866

520867

Rear Axle Load Distribution Solenoid B

Snow Valve Motor Relays

6

6

Rear Axle Load Distribution B Relay Short To Ground

Snow Valve Motor Relays Output

Short To Ground or Defective Solenoid

Short to Ground or Defective Relay(s)

Not available

Not available

Not available Not

33

520868

HVAC Condenser Pusher Fan Relay

5

Over Current

HVAC Condenser Pusher Fan

Open Circuit on HVAC Condenser Pusher

Not available

available

Not

33

520868

HVAC Condenser Pusher Fan Relay

6

Output Under Current or Open Circuit

HVAC Condenser Pusher Fan

Fan circuit

Short to Ground in the HVAC Condenser

Not available

available

Not

33

520869

Trailer BO Stop

6

Output Over Current

Trailer BO Stop Overcurrent

Pusher Fan circuit

Current above normal or grounded circuit

Not available

available 1601-F9
33520870Trailer BO Marker6Trailer BO Marker OvercurrentCurrent above normal or grounded circuitNot available1601-E14
33520871BO Ignition_16BO Ignition_1 OvercurrentCurrent above normal or grounded circuitNot available1601-E16
33520872BO Ignition_26BO Ignition_2 OvercurrentCurrent above normal or grounded circuitNot available1601-F1
33520873BO Ignition_36BO Ignition_3 OvercurrentCurrent above normal or grounded circuitNot available1601-E1
33520874BO Ignition_46BO Ignition_4 OvercurrentCurrent above normal or grounded circuitNot available1601-E2
33

33

520875

520876

Winch IN / OUT Switch

Winch IN Command

2

5

Winch IN OUT Switch Error

Winch IN relay driver under current

Faulty Switch Actuator or Microswitch for Winch IN OUT Switch

Current below normal or open circuit

Not available

Not available

Not available Not

33

520876

Winch IN Command

6

or open circuit

Winch IN relay driver over current

Current above normal or grounded circuit

Not available

available

Not

33

520877

Winch OUT Command

5

Winch OUT relay driver under

Current below normal or open circuit

Not available

available

Not

33

520877

Winch OUT Command

6

current or open circuit

Winch OUT relay driver over current

Current above normal or grounded circuit

Not available

available

Not

33

520878

NEC Park Brake Command

5

NEC Park Brake Command is Under

Open Circuit or Defective Solenoid

Not available

available

Not

33

520878

NEC Park Brake Command

6

Current Or Open Circuit

NEC Park Brake Command is

Short To Ground or Defective Solenoid

Not available

available

Not

overcurrentavailable
33

33

520879

520879

NEC Service Door Command 5

NEC Service Door Command 6

NEC Service Door Command is Open Circuit or Defective Solenoid Not available

Under Current Or Open Circuit

NEC Service Door Command is Short To Ground or Defective Solenoid Not available

Not

available Not

33

520880

NEC Post Trip Inspection Command 5

overcurrent

NEC Post Trip Inspection Command Open Circuit or Defective Solenoid Not available

available

Not

is Under Current Or Open Circuitavailable
33

33

520880

520881

NEC Post Trip Inspection Command 6

TEM Interlocked Switch Relay 1 5

NEC Post Trip Inspection Command Short To Ground or Defective Solenoid Not available is overcurrent

TEM Switch Interlocked Output Open circuit in TEM Interlocked circuit 1 Not available

Not available Not

33

520881

TEM Interlocked Switch Relay 1 6Circuit 1 undercurrent

TEM Switch Interlocked Output Short circuit in TEM Interlocked circuit 1 Not available

available

Not

33

520882

TEM Interlocked Switch Relay 2 5Circuit 1 overcurrent

TEM Switch Interlocked Output Open circuit in TEM Interlocked circuit 2 Not available

available

Not

33

520882

TEM Interlocked Switch Relay 2 6Circuit 2 undercurrent

TEM Switch Interlocked Output Short circuit in TEM Interlocked circuit 2 Not available

available

Not

33

520883

Transfer Case Low Indicator 5Circuit 2 overcurrent

Transfer case low indicator high side Not available Not available

available

1601-F7

33

520883

Transfer Case Low Indicator 6output exhibits an undercurrent condition or is open

Transfer case low indicator high side Not available Not available

1601-F7

33

520884

Transfer Case Neutral Indicator 5output exhibits an overcurrent condition or is short to ground

Transfer case neutral indicator high Not available Not available

1601-F6

33

520884

Transfer Case Neutral Indicator 6side output exhibits an undercurrent condition or is open

Transfer case neutral indicator high Not available Not available

1601-F6

side output exhibits an overcurrent condition or is short to ground
33

33

520885

520885

Windshield Heat Left Output 5

Windshield Heat Left Output 6

Windshield Heat Left output Under Open Circuit in Windshield Heat Left Not available Current or Open Circuit Output

Windshield Heat Left Output Short- Short Circuit detected in Windshield Heat Not available

Not available Not

33

520886

Windshield Heat Right Output 5Circuit Left Output

Windshield Heat Right Output Under Open Circuit detected in Windshield Heat Not available

available

Not

33

520886

Windshield Heat Right Output 6Current or Open Circuit Right Output

Windshield Heat Right Output Short- Short Circuit detected in Windshield Heat Not available

available

Not

33

520887

Windshield Heat Left Temp Sensor 0

Circuit Right Output

Left Windshield Heat Temperature Left Windshield Heat Temperature Sensor Not available

available

Not

33

520887

Windshield Heat Left Temp Sensor 1

Sensor reading above normal range Shorted High or Open Circuit or faulty

sensor system

Left Windshield Heat Temperature Left Windshield Heat Temperature Sensor Not available

available

Not

Sensor reading below normal range Short to Ground or faulty sensor systemavailable
33

33

520888

520888

Windshield Heat Right Temp Sensor 0

Windshield Heat Right Temp Sensor 1

Right Windshield Heat Temperature Right Windshield Heat Temperature Not available Sensor reading above normal range Sensor Shorted High or Open Circuit or

faulty sensor system

Right Windshield Heat Temperature Right Windshield Heat Temperature Not available

Not available

Not

33

520889

Relay Driver 9, Channel 1 13Sensor reading below normal range Sensor Short to Ground or faulty sensor

system

Connector J4 Pin E11 has a load on Connector J4 Pin E11 is drawing current Not available

available

Not

this pin that has been configured as and it is configured as unused check unused configuration and or wiring harnessavailable
33520890Relay Driver 10, Channel 2 13Connector J4 Pin E10 has a load on Connector J4 Pin E10 is drawing current Not available this pin that has been configured as and it is configured as unused check

unused configuration and or wiring harness

Not available
33520891Relay Driver 11, Channel 3 13Connector J4 Pin E15 has a load on Connector J4 Pin E15 is drawing current Not available this pin that has been configured as and it is configured as unused check

unused configuration and or wiring harness

Not available
33520892Relay Driver 12, Channel 4 13Connector J4 Pin E14 has a load on Connector J4 Pin E14 is drawing current Not available this pin that has been configured as and it is configured as unused check

unused configuration and or wiring harness

Not available
33520893Relay Driver 13, Channel 5 13Connector J4 Pin E16 has a load on Connector J4 Pin E16 is drawing current Not available this pin that has been configured as and it is configured as unused check

unused configuration and or wiring harness

Not available
33520894Relay Driver 14, Channel 6 13Connector J4 Pin E12 has a load on Connector J4 Pin E12 is drawing current Not available this pin that has been configured as and it is configured as unused check

unused configuration and or wiring harness

Not available
33520895Relay Driver 15, Channel 7 13Connector J4 Pin E13 has a load on Connector J4 Pin E13 is drawing current Not available this pin that has been configured as and it is configured as unused check

unused configuration and or wiring harness

Not available
33

33

520896

520897

Relay Driver 16, Channel 8 13

Relay Driver 17, Channel 9 13

Connector J4 Pin E9 has a load on Connector J4 Pin E9 is drawing current Not available this pin that has been configured as and it is configured as unused check

unused configuration and or wiring harness

Connector J4 Pin F6 has a load on Connector J4 Pin F6 is drawing current Not available

Not available

Not

33

520898

Relay Driver 18, Channel 10 13this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness

Connector J4 Pin F7 has a load on Connector J4 Pin F7 is drawing current Not available

available

Not

33

520899

Relay Driver 19, Channel 11 13this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness

Connector J4 Pin F2 has a load on Connector J4 Pin F2 is drawing current Not available

available

Not

33

520900

Relay Driver 20, Channel 12 13this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness

Connector J4 Pin F3 has a load on Connector J4 Pin F3 is drawing current Not available

available

Not

33

520901

Relay Driver 21, Channel 13 13this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness

Connector J4 Pin F1 has a load on Connector J4 Pin F1 is drawing current Not available

available

Not

this pin that has been configured as and it is configured as unused check

unused configuration and or wiring harness

available
33

33

520902

520903

Relay Driver 22, Channel 14 13

Relay Driver 23, Channel 15 13

Connector J4 Pin F5 has a load on Connector J4 Pin F5 has a load on this pin Not available this pin that has been configured as that has been configured as unused

unused

Connector J4 Pin F4 has a load on Connector J4 Pin F4 is drawing current Not available

Not available

Not

this pin that has been configured as and it is configured as unused check

unused configuration and or wiring harness

available
33

33

520904

520905

Relay Driver 24, Channel 16

Relay Driver 25, Channel 17

13

13

Connector J4 Pin F8 has a load on

this pin that has been configured as unused

Connector J4 Pin F10 has a load on

Connector J4 Pin F8 is drawing current

and it is configured as unused check configuration and or wiring harness Connector J4 Pin F10 is drawing current

Not available

Not available

Not

available

Not

this pin that has been configured as unusedand it is configured as unused check configuration and or wiring harnessavailable
33520906Relay Driver 26, Channel 1813Connector J4 Pin F11 has a load on this pin that has been configured as unusedConnector J4 Pin F11 is drawing current and it is configured as unused check configuration and or wiring harnessNot availableNot available
33520907Relay Driver 27, Channel 1913Connector J4 Pin F14 has a load on this pin that has been configured as unusedConnector J4 Pin F14 is drawing current and it is configured as unused check configuration and or wiring harnessNot availableNot available
33520908Relay Driver 28, Channel 2013Connector J4 Pin F15 has a load on this pin that has been configured as unusedConnector J4 Pin F15 is drawing current and it is configured as unused check configuration and or wiring harnessNot availableNot available
33520909Relay Driver 29, Channel 2113Connector J4 Pin F13 has a load on this pin that has been configured as unusedConnector J4 Pin F13 is drawing current and it is configured as unused check configuration and or wiring harnessNot availableNot available
33

33

520910

520911

Relay Driver 30, Channel 22

Relay Driver 31, Channel 23

13

13

Connector J4 Pin F9 has a load on this pin that has been configured as unused

Connector J4 Pin F16 has a load on

Connector J4 Pin F9 is drawing current and it is configured as unused check configuration and or wiring harness Connector J4 Pin F16 is drawing currentNot available

Not available

Not available

Not

this pin that has been configured as unusedand it is configured as unused check configuration and or wiring harnessavailable
33520912Relay Driver 32, Channel 2413Connector J4 Pin F12 has a load on this pin that has been configured as unusedConnector J4 Pin F12 is drawing current and it is configured as unused check configuration and or wiring harnessNot availableNot available
33

33

520913

520914

Relay Driver 1, Channel 25

Relay Driver 2, Channel 26

13

13

Connector J4 Pin E7 has a load on this pin that has been configured as unused

Connector J4 Pin E6 has a load on

Connector J4 Pin E7 is drawing current and it is configured as unused check configuration and or wiring harness Connector J4 Pin E6 is drawing currentNot available

Not available

Not available

Not

33

520915

Relay Driver 3, Channel 27

13

this pin that has been configured as unused

Connector J4 Pin E3 has a load on

and it is configured as unused check

configuration and or wiring harness Connector J4 Pin E3 is drawing current

Not available

available

Not

33

520916

Relay Driver 4, Channel 28

13

this pin that has been configured as unused

Connector J4 Pin E2 has a load on

and it is configured as unused check

configuration and or wiring harness Connector J4 Pin E2 is drawing current

Not available

available

Not

33

520917

Relay Driver 5, Channel 29

13

this pin that has been configured as unused

Connector J4 Pin E4 has a load on

and it is configured as unused check

configuration and or wiring harness Connector J4 Pin E4 is drawing current

Not available

available

Not

33

520918

Relay Driver 6, Channel 30

13

this pin that has been configured as unused

Connector J4 Pin E8 has a load on

and it is configured as unused check

configuration and or wiring harness Connector J4 Pin E8 is drawing current

Not available

available

Not

this pin that has been configured as

unused

and it is configured as unused check

configuration and or wiring harness

available
33

33

520919

520920

Relay Driver 7, Channel 31

Relay Driver 8, Channel 32

13

13

Connector J4 Pin E1 has a load on this pin that has been configured as unused

Connector J4 Pin E5 has a load on

Connector J4 Pin E1 is drawing current and it is configured as unused check configuration and or wiring harness

Connector J4 Pin E5 is drawing current

Not available

Not available

Not available

Not

33

520922

Switch 6-Pack #3 Location 1

13

this pin that has been configured as unused

Unexpected switch in switchpack 3

and it is configured as unused check

configuration and or wiring harness Switch actuator installed or bad

Not available

available

Not

33

520923

Switch 6-Pack #3 Location 2

13

(MID 3) position 1 from left (Switch 1

of 6)

Unexpected switch in switchpack 3

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520924

Switch 6-Pack #3 Location 3

13

(MID 3) position 2 from left (Switch 2

of 6)

Unexpected switch in switchpack 3

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520925

Switch 6-Pack #3 Location 4

13

(MID 3) position 3 from left (Switch 3

of 6)

Unexpected switch in switchpack 3

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520926

Switch 6-Pack #3 Location 5

13

(MID 3) position 4 from left (Switch 4

of 6)

Unexpected switch in switchpack 3

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520927

Switch 6-Pack #3 Location 6

13

(MID 3) position 5 from left (Switch 5

of 6)

Unexpected switch in switchpack 3

microswitch in location configured as empty

Switch actuator installed or bad

Not available

available

Not

33

520928

Daytime Running Light Tell Tale

5

(MID 3) position 6 from left (Switch 6

of 6)

DRL Tell Tale Relay Command is

microswitch in location configured as empty

Open Circuit or Defective Solenoid

Not available

available

Not

33

520928

Command

Daytime Running Light Tell Tale

6

Under Current Or Open Circuit

DRL Tell Tale Relay Command is

Short To Ground or Defective Solenoid

Not available

available

Not

58

109

Command

Coolant Pressure

14

Overcurrent

High Refrigerant Pressure

High refrigerant pressure in system or

available

58

168

Electrical Potential (Voltage)

3

Battery Voltage High

pressure sensor unplugged or faulty Pressure sensor

Battery voltage above 16VDC

58168Electrical Potential (Voltage)4Battery Voltage LowBattery voltage below 12.1VDC
58

58

1547

1547

A/C Evaporator Temperature

A/C Evaporator Temperature

0

1

Duct Inlet Sensor High

Duct Inlet sensor Low

Recirc sensor wire shorted to power or Recirc sensor missing or open circuit or faulty Recirc sensor

Recirc sensor wire shorted to ground or

58

1548

HVAC Duct Temperature

3

Duct temperature sensor voltage

fault Recirc sensor

Duct temperature sensor wire shorted to

highpower or open circuit or faulty sensor
International Trucks Diagnostics Trouble Codes (DTCs) | Truckmanualshub.com (2024)
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