AMC OBD Trouble Code 42

AMC Problems For OBD Code 42

Z1 voltage missing when autoshutdown circuit energized (whatever that means)

HO2S circuit indicates system rich (right HO2S).

bypass or electronic spark timing (est) circuit

Vehicle speed sensor circuit

Auto shutdown relay circuit
Open or short in the ASD relay wiring or connectors.

Check 42 OBD1 Code For All AMC Models

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