Symptoms

- Engine Light ON (or Service Engine Soon Warning Light) - Engine may not start

Possible Causes

- PCM Harness power supply circuit is open or shorted - PCM Programing - Faulty PCM

When Detected

Indicates the PCM has experienced an internal memory fault.

Tech Notes

Check the PCM fuse, if fuse is OK try erasing the code first and if the code comes back you may have to reprogram or replaced the PCM.

Description

The PCM continuously monitors its own internal memory status, internal circuits, and output signals transmitted to the throttle actuator. This self-check insures that the PCM is functioning properly. If any malfunction is detected, the ECM will set the code and illuminate the engine light.