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U0100 Diagnostic Trouble Code Discussion for July 2019

Lost Communication With ECM


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Trouble Ticket Help Requests for DTC U0100
Help Request Posted
2012 Jeep Liberty Jet 3.7L Cuts out, Stall, MIL Lamp on VIN: 1C4PJMFK8C
U0100: -lost communication with ecm/pcm. These two codes are hard codes and can not be cleared out of memory. Each module was disconnected and the problem still persists. The ground cable and engine grounds were checked, cleaned and retightened. This vehicle originally was a tow in on a hook. ALD...
July 16, 2019