DESCRIPTION:Aftertreatment Control Module PT-CAN DM1 message not received or has stopped arriving. MONITORED PARAMETER:CAN communication TYPICAL ENABLING CONDITIONS:Always enabled MONITOR SEQUENCE:None EXECUTION FREQUENCY:Always enabled TYPICAL DURATION:2 seconds DASH LAMPS:1. MIL2. CEL ENGINE REACTION:None VERIFICATION:Ignition Cycle NOTE: If any engine computer modules have been programmed recently, it may cause this code to be inactive. Reset the codes, test drive, and see if they come back. PROBABLE CAUSES:1. Low battery voltage.2. Wiring between the MCM 21-pin connector and the battery.3. Wiring between the MCM 21-pin connector and the CPC #4 connector.

DESCRIPTION:Aftertreatment Control Module (ACM) message not received or has stopped arriving. MONITORED PARAMETER:CAN communication TYPICAL ENABLING CONDITIONS:Always enabled MONITOR SEQUENCE:None EXECUTION FREQUENCY:Always enabled TYPICAL DURATION:2 seconds DASH LAMPS:1. MIL2. CEL ENGINE REACTION:Derate 25% VERIFICATION:Ignition on NOTE: If any engine computer modules have been programmed recently, it may cause this code to be inactive. Reset the codes, test drive, and see if they come back. PROBABLE CAUSES:1. Low battery voltage.2. Wiring between the MCM 21-pin connector and the battery.3. Wiring between the MCM 21-pin connector and the CPC #4 connector.

NOTE: The troubleshooting solution is the same for any and all fault descriptions, reprogram the common powertrain controller (CPC) with the latest software release. NOTE: Reprogram the CPC with the latest software release.

NOTE: Replace the common powertrain controller (CPC) and reprogram with the latest software release. NOTE: Replace the CPC and reprogram with the latest software release.

NOTE: The troubleshooting solution is the same for any and all fault descriptions. POSSIBLE CAUSES:1. The Common Powertrain Controller (CPC).2. Needs software update. NOTE: Reprogram the CPC with the latest software release.