U0100 - Lost Communication With Electronic Control Module (ECM)/Powertrain Control Module (Pcm)
U0100 - LOST COMMUNICATION WITH ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM)
| Description: | This DTC is set when the PCM can not communicate with the transmission control module (TCM). | |||
| Possible Causes: |
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| Diagnostic Aids: | Network DTC concerns occur during module-to-module communication. For additional description and operation of the vehicle communication network, refer to appropriate MODULE COMMUNICATIONS NETWORK article. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory | |
| All | Clear the DTCs. Repeat the self-test. If the DTC is retrieved again, install a new PCM. | |||