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U0100 Diagnostic Trouble Code Discussion for April 2010

Lost Communication With ECM

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Trouble Ticket Help Requests for DTC U0100
Help Request Posted
2001 Saturn L300 3.0L MIL Lamp on VIN: 1G8JN52R31
U0100: loss of class 2 serial communication. car has the codes listed below.communication with scanner comes and goes.powers at dlc are ok.also instrument cluster operation is erratic,such as fuel guge moves around a lot.tachometer work intermittently.sometimes the scanner will communicate with ecm but n...
April 15, 2010