U0100 - Lost Communication With Electronic Control Module (ECM)/Powertrain Control Module (Pcm) A
WARNING: This page is about a different car, the 2014 Lincoln MKZ, 2014 Ford Fusion, and 2014 Ford C-Max. However, it is still accessible from the selected car via links, so may be relevant.
U0100 - LOST COMMUNICATION WITH ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) A
| Description: | The TCM continuously monitors the controller area network (CAN) for messages from the PCM. This DTC sets when the TCM does not receive the PCM message within the defined amount of time. | ||
| Possible Causes: |
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| Diagnostic Aids: | Check for other SOBDMC DTCs or SOBDMC related symptoms. Diagnose all other SOBDMC DTCs or SOBDMC related symptoms first. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST QD: UNABLE TO ACTIVATE TRANSMISSION CONTROL MODULE (TCM) SELF-TEST . | ||