DTC U0100 - Lost Communication With ECM/PCM A
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DTC DESCRIPTION U0100 - LOST COMMUNICATION WITH ECM/PCM A
| Description: | The reductant dosage control module continuously monitors the controller area network (CAN) for messages from the PCM. This DTC sets when the reductant dosage control module does not receive the PCM message within the defined amount of time. | ||
| Possible Causes: |
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| Diagnostic Aids: | Check for other reductant dosage control module DTCs or reductant dosage control module related symptoms. Diagnose all other reductant dosage control module DTCs or reductant dosage control module related symptoms first. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test RM. | ||