U0100

U0100 - Lost communication with ECM/PCM

Clear all DTC's. Retrieved the DTC's, if DTC C2784 is still present, install a new instrument cluster. Test for normal operation.
Instrument Cluster


Clear the DTC's. Cycle the key and wait 10 seconds. Repeat self test. If DTC U0100 is retrieved again. Install a new PCM. Test the system for normal operation.
Service and Repair