P0688 OBD II Trouble Code ECM/PCM Power Relay Sense Circuit Open

How to easily diagnose, repair, and info on causes of a P0688 trouble code that indicates an open state of the ECM/PCM power relay sense circuit.

Symptoms of P0688 OBD II Trouble Code

Common Causes of P0688 OBD II Trouble Code

Severity of P0688 OBD II Trouble Code

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