Table B: Diagnostic Trouble Code Table
SPN FMI
Display
Color System Reaction Cause/Description Action/Repair Instructions
70 19 Amber OnGuard™
System Disabled
Incorrect J1939 Parking Brake Switch data received in CCVS1 message (from engine ECM, body, cab or chassis controller)
앫 Verify operation of the Parking Brake Switch and the ECU broadcasting this information on the J1939 network (engine ECM, body, cab or chassis controller) is functional.
앫 Verify the correct radar part number is installed on the vehicle.
84 19 Amber OnGuard™
System Disabled
Incorrect J1939 Wheel-Based Vehicle Speed data received in CCVS1 message (usually from engine ECM)
앫 Verify the correct radar part number is installed on the vehicle.
앫 Verify the engine ECM is functional and has correct software and parameters.
86 19 Amber OnGuard™
System Disabled
Incorrect J1939 Cruise Control Set Speed data received in CCVS1 message (usually from engine ECM)
앫 Verify the correct radar part number is installed on the vehicle.
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify the engine ECM is functional and has correct software and parameters.
91 19 Amber OnGuard™
System Disabled
Incorrect J1939 Accelerator Pedal Position 1 data received in EEC2 message (usually from engine ECM, also possible in body, cab or chassis controller)
앫 Verify the Accelerator Pedal is operating correctly and the ECU broadcasting this information on the J1939 network (engine ECM, body, cab or chassis controller) is functional.
앫 Verify the correct radar part number is used on the vehicle.
188 9 Amber OnGuard™
System Disabled
J1939 Engine Configuration 1 (EC1) message not received or intermittent
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify engine ECM is functional and has correct software and parameters.
188 19 Amber OnGuard™
System Disabled
Incorrect J1939 Engine Speed At Idle data received in EC1 message from engine
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify engine ECM is functional and has correct software and parameters.
190 19 Amber OnGuard™
System Disabled
Incorrect J1939 Engine Speed data received in EEC1 message from engine
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify engine ECM is functional and has correct software and parameters.
2 Diagnostics, Troubleshooting and Testing
191 19 Amber OnGuard™
System Disabled
Incorrect J1939 Transmission Output Shaft Speed data received in ETC1 message from
transmission
앫 Verify the correct radar part number is installed on the vehicle.
앫 Cycle the ignition to clear DTCs after transmission servicing.
앫 Verify the transmission ECU is functional and has correct software and parameters.
512 19 Amber OnGuard™
System Disabled
Incorrect J1939 Driver’s Demand Engine - Percent Torque data received in EEC1 message from engine
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify the engine ECM is functional and has correct software and parameters.
513 9 Amber OnGuard™
System Disabled
J1939 Electronic Engine Controller 1 (EEC1) message not received or intermittent
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify the engine ECM is functional and has correct software and parameters.
513 19 Amber OnGuard™
System Disabled
Incorrect J1939 Actual Engine - Percent Torque data received in EEC1 message from engine
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify the engine ECM is functional and has correct software and parameters.
520 9 Amber OnGuard™
System Disabled
J1939 Electronic Retarder Controller 1 (ERC1) message not received or intermittent
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify the engine ECM is functional and has correct software and parameters.
520 19 Amber OnGuard™
System Disabled
Incorrect J1939 Actual Retarder - Percentage Torque data received in ERC1 message from engine retarder
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify the engine ECM is functional and has correct software and parameters.
521 19 Amber OnGuard™
System Disabled
Incorrect J1939 Brake Pedal Position data received in EBC1 message from ABS
앫 Use Meritor WABCO TOOLBOX™ Software PC Diagnostics to test the ABS Brake Pedal Pressure Sensor.
앫 Verify the correct radar part number is installed on the vehicle.
앫 Verify the correct ABS ECU part number is used on the vehicle.
앫 Cycle the ignition to clear DTCs after ABS servicing.
SPN FMI
Display
Color System Reaction Cause/Description Action/Repair Instructions
2 Diagnostics, Troubleshooting and Testing
523 9 Amber OnGuard™
System Disabled
J1939 Electronic Transmission Controller 2 (ETC2) message not received or intermittent
앫 Verify the correct OnGuard™ radar part number is installed on the vehicle.
앫 Cycle the ignition to clear DTCs after transmission servicing.
앫 Verify transmission ECU is functional and has correct software and parameters.
523 19 Amber OnGuard™
System Disabled
Incorrect J1939 Transmission Current Gear data received in ETC2 message from transmission
앫 Verify the correct radar part number is installed on the vehicle.
앫 Cycle the ignition to clear DTCs after transmission servicing.
앫 Verify transmission ECU is functional and has correct software and 527 parameters.
527 9 Amber OnGuard™
System Disabled
J1939 Cruise Control/Vehicle Speed 1 (CCVS1) message from the primary source (usually the engine) not received or intermittent
앫 Verify the correct OnGuard™ radar part number is installed on the vehicle.
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify engine ECU is functional and has correct software and parameters.
527 19 Amber OnGuard™
System Disabled
Incorrect J1939 Cruise Control States data received in CCVS1 message (usually from engine, also possible from body, cab or chassis controller)
앫 Verify the correct radar part number is installed on the vehicle.
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify the engine ECM (or body, cab or chassis controller) is functional and has correct software and parameters.
544 19 Amber OnGuard™
System Disabled
Incorrect J1939 Engine Reference Torque data in EC1 message received from engine
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify the engine ECM is functional and has correct software and parameters.
559 9 Amber OnGuard™
System Disabled
J1939 Electronic Engine Controller 2 (EEC2) message not received or intermittent
앫 Verify the correct OnGuard™ radar part number is installed on the vehicle.
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify engine ECU is functional and has correct software and parameters.
SPN FMI
Display
Color System Reaction Cause/Description Action/Repair Instructions
2 Diagnostics, Troubleshooting and Testing
560 9 Amber OnGuard™
System Disabled
J1939 Electronic Transmission Controller 1 (ETC1) message not received or intermittent
앫 Verify the correct OnGuard™ radar part number is installed on the vehicle.
앫 Cycle the ignition to clear DTCs after transmission servicing.
앫 Verify transmission ECU is functional and has correct software and parameters.
560 19 Amber OnGuard™
System Disabled
Incorrect J1939 Transmission Driveline Engaged data received in ETC1 message from transmission
앫 Verify the correct OnGuard™ radar part number is installed on the vehicle.
앫 Cycle the ignition to clear DTCs after transmission servicing.
앫 Verify transmission ECU is functional and has correct software and parameters.
563 19 Amber OnGuard™
System Disabled
Incorrect J1939 Anti-Lock Braking Active data received in EBC1 message from ABS
앫 Verify the correct ABS ECU part number is used on this vehicle.
앫 Cycle the ignition to clear the DTCs after ABS servicing.
574 19 Amber OnGuard™
System Disabled
Incorrect J1939 Transmission Shift In Process data received in ETC1 message from transmission
앫 Verify the correct radar part number is installed on the vehicle.
앫 Cycle the ignition to clear DTCs after transmission servicing.
앫 Verify the transmission ECU is functional and has correct software and parameters.
596 19 Amber OnGuard™
System Disabled
Incorrect J1939 Cruise Control Enable Switch data received in CCVS1 message (from engine ECM, body, cab or chassis controller)
앫 Verify operation of the Cruise Control Enable Switch and the ECU broadcasting this information on the J1939 network (engine ECM, body, cab or chassis controller) is functional.
앫 Verify the correct radar part number is installed on the vehicle.
597 19 Amber OnGuard™
System Disabled
Incorrect J1939 Brake Switch data received in CCVS1 message (from engine ECM, body, cab or chassis controller)
앫 Verify operation of the Brake Switch and the ECU broadcasting this information on the J1939 network (engine ECM, body, cab or chassis controller) is functional.
앫 Verify the correct radar part number is installed on the vehicle.
SPN FMI
Display
Color System Reaction Cause/Description Action/Repair Instructions
2 Diagnostics, Troubleshooting and Testing
598 19 Amber OnGuard™
System Disabled
Incorrect J1939 Clutch Switch data received in CCVS1 message (from engine ECM, body, cab or chassis controller)
앫 Verify operation of the Clutch Switch and the ECU broadcasting this information on the J1939 network (engine ECM, body, cab or chassis controller) is functional.
앫 Verify the correct radar part number is installed on the vehicle.
599 19 Amber OnGuard™
System Disabled
Incorrect J1939 Cruise Control Set Switch data received in CCVS1 message (from engine ECM, body, cab or chassis controller)
앫 Verify operation of the Cruise Control Set Switch and the ECU broadcasting this information on the J1939 network (engine ECM, body, cab or chassis controller) is functional.
앫 Verify the correct radar part number is installed on the vehicle.
601 19 Amber OnGuard™
System Disabled
Incorrect J1939 Cruise Control Resume Switch data received in CCVS1 message (from engine ECM, body, cab or chassis controller)
앫 Verify operation of the Cruise Control Resume Switch and the ECU broadcasting this information on the J1939 network (engine ECM, body, cab or chassis controller) is functional.
앫 Verify the correct radar part number is installed on the vehicle.
770 19 Amber OnGuard™
System Disabled
Bootloader error usually caused when there is an issue during a radar software update
앫 Run the software update again.
앫 Is usually seen in TOOLBOX™ Software with SPN 197120 FMI 31 on the display.
904 9 Amber OnGuard™
System Disabled
J1939-Wheel Speed Information (EBC2) message from the ABS not received or intermittent
앫 Verify the ABS ECU is connected to the J1939 network and is functional.
앫 Verify correct ABS part number is used.
앫 Cycle ignition to clear DTCs after ABS servicing.
904 19 Amber OnGuard™
System Disabled
CAN Out of Range for signal EBC2_FRNT_AXLE_SPD. See ABS ECU.
앫 Verify the ABS ECU is connected to the J1939 network and is functional.
앫 Verify correct radar part number is installed on the vehicle.
앫 Verify wheel speed sensor signal per ABS ECU diagnostics.
앫 Cycle ignition to clear DTCs after ABS servicing.
905 19 Amber OnGuard™
System Disabled
CAN Out of Range for signal EBC2_RELSPD_FRNTAXLE_LW
앫 Check ABS ECU for proper function and active faults.
앫 Verify correct ABS ECU is installed.
SPN FMI
Display
Color System Reaction Cause/Description Action/Repair Instructions
2 Diagnostics, Troubleshooting and Testing
906 19 Amber OnGuard™
System Disabled
CAN Out of Range for signal EBC2_RELSPD_FRNTAXLE_RW
앫 Check ABS ECU for proper function and active faults.
앫 Verify correct ABS ECU is installed.
907 19 Amber OnGuard™
System Disabled
CAN Out of Range for signal EBC2_RELSPD_REARAXLE_LW
앫 Check ABS ECU for proper function and active faults.
앫 Verify correct ABS ECU is installed.
908 19 Amber OnGuard™
System Disabled
CAN Out of Range for signal EBC2_RELSPD_REARAXLE_RW
앫 Check ABS ECU for proper function and active faults.
앫 Verify correct ABS ECU is installed.
1121 9 Amber OnGuard™
System Disabled
J1939 Electronic Brake Controller 1 (EBC1) message from the ABS not received or intermittent
앫 Verify the ABS ECU is connected to the J1939 network and is functional.
앫 Verify correct ABS part number is used.
앫 Cycle ignition to clear DTCs after ABS servicing.
1121 19 Amber OnGuard™
System Disabled
Incorrect J1939 EBS Brake Switch data received in EBC1 message from ABS
앫 Use Meritor WABCO TOOLBOX™ Software PC Diagnostics to test the ABS Brake Pedal Pressure Sensor.
앫 Verify the correct radar part number is installed on the vehicle.
앫 Verify the correct ABS ECU part number is used on the vehicle.
앫 Cycle the ignition to clear DTCs after ABS servicing.
1243 19 Amber OnGuard™
System Disabled
Incorrect J1939 ABS Fully Operational data received in EBC1 message from ABS
앫 Use Meritor WABCO TOOLBOX™ Software PC Diagnostics to test the Anti-Lock Braking System.
앫 Verify the correct radar part number is installed on the vehicle.
앫 Verify the correct ABS ECU part number is used on the vehicle.
앫 Cycle the ignition to clear DTCs after ABS servicing.
1590 9 Amber OnGuard™
System Disabled
J1939 Adaptive Cruise Control 1 (ACC1) message from the engine not received or intermittent
앫 Verify the correct OnGuard™ radar part number is installed on the vehicle.
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify the engine ECM has the Adaptive
SPN FMI
Display
Color System Reaction Cause/Description Action/Repair Instructions
2 Diagnostics, Troubleshooting and Testing
1590 19 Amber OnGuard™
System Disabled
Incorrect J1939 ACC Mode data in ACC1 message received from engine.
This code may indicate the engine has recognized a radar malfunction (e.g. blocked radar) and has disabled Cruise Control.
This code may also indicate the engine is not configured for operation with an Adaptive Cruise Control system.
앫 Check for multiple active DTCs in the radar.
앫 If there is more than one active code, repair all other codes, then cycle the ignition to clear the error recognition in the engine.
앫 If this is the only active DTC, verify the engine ECM has the Adaptive Cruise Control parameter enabled.
1633 19 Amber OnGuard™
System Disabled
Incorrect J1939 Cruise Control Pause Switch data received in CCVS1 message (from engine ECM, body, cab or chassis controller)
앫 Verify operation of the Cruise Control Pause Switch and the ECU broadcasting this information on the J1939 network (engine ECM, body, cab or chassis controller) is functional.
앫 Verify the correct radar part number is installed on the vehicle.
2919 9 Amber OnGuard™
System Disabled
J1939 Electronic Brake Controller 5 (EBC5) message from ABS not received or intermittent
앫 Verify the ABS ECU is connected to the J1939 network and is functional.
앫 Verify the correct OnGuard™ radar part number is installed on the vehicle.
앫 Verify correct ABS part number is used.
앫 Cycle ignition to clear DTCs after ABS servicing.
5023 9 Amber OnGuard™
System Disabled
J1939 Adaptive Cruise Control 2 (ACC2) message from the OnGuard™ display (or instrument cluster) not received or intermittent
앫 Intermittent power or J1939 network connection to OnGuard™ display or instrument cluster.
앫 Verify harness is correct.
앫 Verify correct software version in OnGuard™
display or instrument cluster.
5606 9 Amber OnGuard™
System Disabled
J1939 Cruise Control/Vehicle Speed 3 (CCVS3) message (usually from the engine) not received or intermittent
앫 Verify the correct OnGuard™ radar part number is installed on the vehicle.
앫 Cycle the ignition to clear DTCs after engine servicing.
앫 Verify the engine ECM has the Adaptive Cruise Control parameter enabled.
SPN FMI
Display
Color System Reaction Cause/Description Action/Repair Instructions
2 Diagnostics, Troubleshooting and Testing
5606 19 Amber OnGuard™
System Disabled
Incorrect J1939 Adaptive Cruise Control Readiness Status data received in CCVS3 message from engine.
This code may indicate the engine has recognized a radar malfunction (e.g. blocked radar) and has disabled Cruise Control.
This code may also indicate the engine is not configured for operation with an Adaptive Cruise Control system.
앫 Verify the fault is active at all times by cycling the key off for 2 to 3 minutes and powering it back up to see if the fault code is still active.
앫 Verify there are no faults in any system on the vehicle and repair all other faults before diagnosing the OnGuard™ system.
앫 Check for multiple active DTCs in the radar.
앫 If there is more than one active code, repair all other codes, then cycle the ignition to clear the error recognition in the engine.
앫 If this is the only active DTC, instruct the dealer to verify with the engine manufacturer that the engine parameters are set correctly.
앫 Check any optional components that are connected to the J1939 network that may cause a message issue.
5681 9 Amber OnGuard™
System Disabled
J1939 Advanced Emergency Braking System 2 (AEBS2) message from the OnGuard™
display (or instrument cluster) not received or intermittent
앫 Intermittent power or J1939 network connection to OnGuard™ display or instrument cluster.
앫 Verify harness is correct.
앫 Verify correct software version in OnGuard™
display or instrument cluster.
5681 19 Amber OnGuard™
System Disabled
Incorrect J1939 Driver activation demand for Advanced Emergency Braking System data received in AEBS2 message from OnGuard™
display (or instrument cluster)
앫 Intermittent power or J1939 network connection to OnGuard™ display (or instrument cluster).
앫 Verify harness is correct.
앫 Verify correct software version in OnGuard™
display (or instrument cluster).
5682 19 Amber OnGuard™
System Disabled
Incorrect J1939 AEBS2 Message Counter data received in AEBS2 message from OnGuard™ display (or instrument cluster)
앫 Intermittent power or J1939 network connection to OnGuard™ display (or instrument cluster).
앫 Verify harness is correct.
앫 Verify correct software version in OnGuard™
display (or instrument cluster).
5683 19 Amber OnGuard™
System Disabled
Incorrect J1939 AEBS2 Message Checksum data received in AEBS2 message from OnGuard™ display (or instrument cluster)
앫 Intermittent power or J1939 network connection to OnGuard™ display (or instrument cluster).
앫 Verify harness is correct.
SPN FMI
Display
Color System Reaction Cause/Description Action/Repair Instructions
2 Diagnostics, Troubleshooting and Testing
197120 31 Amber OnGuard™
System Disabled
Bootloader error usually caused when there is an issue during a radar software update.
앫 Run the software update again.
앫 Is usually seen in MeritorWABCO
TOOLBOX™ Software PC Diagnostics with SPN 197120 FMI 31 on the display.
516096 9 Amber OnGuard™
System Disabled
J1939 Cruise Control/Vehicle Speed 1 (CCVS1) message from second source (usually the body controller or chassis controller) not received or intermittent
앫 Verify the correct OnGuard™ radar part number is installed on the vehicle.
앫 Verify the body/chassis ECU is functional and has correct software and parameters.
앫 Cycle the ignition to clear DTCs after servicing body/chassis ECU.
앫 If SPN 516097 FMI 9 is also active in conjunction with this code, there may be an issue with the Central Gateway Module, review with the OEM.
516097 9 Amber OnGuard™
System Disabled
J1939 Cruise Control/Vehicle Speed 1 (CCVS1) message from third source (usually the body controller or chassis controller) not received or intermittent
앫 Verify the correct OnGuard™ radar part number is installed on the vehicle.
앫 Verify the body/chassis ECU is functional and has correct software and parameters.
앫 Cycle the ignition to clear DTCs after servicing body/chassis ECU.
앫 If SPN 516096 FMI 9 is also active in conjunction with this code, there may be an issue with the Central Gateway Module, review with the OEM.
516108 9 Amber OnGuard™
System Disabled
J1939 Retarder Configuration (RC) message from the engine retarder not received or intermittent
앫 Verify the correct OnGuard™ radar part number is installed on the vehicle.
앫 Cycle the ignition to clear DTCs after engine servicing.
516108 19 Amber OnGuard™
System Disabled
Incorrect J1939 Reference Retarder Torque data received in RC message from engine retarder
앫 Verify engine-retarder-ECU is functional and has correct parameters and software downloaded from database.
앫 Verify the correct engine-retarder-ECU part number is installed on this vehicle.
앫 Cycle the ignition to clear DTCs after retarder servicing.
516211 5 Amber OnGuard™
System Disabled
System Disabled
