CAR OBD CODES

P0604 OBD Code Definition:
P0604 ECM Self Check Fault
P0604 OBD Code Description:

OBD2 Code P0604 Definition:
The ECM/PCM continuously monitors its own internal memory status, internal circuits, and output signals transmitted to the throttle actuator. This self-check insures that the ECM/PCM is functioning properly. If any malfunction is detected, the will ECM/PCM will set the code and illuminate the engine light. Symptoms

Possible sumptoms of P0604
– Engine Light ON (or Service Engine Soon Warning Light) – Engine may not start Possible Causes

Possible causes of P0604
– ECM/PCM Harness power supply circuit is open or shorted – ECM/PCM Programing – Faulty ECM/PCM The Error code is generally activated on detection of the following conditions: Indicates the ECM/PCM has experienced an internal memory fault. Possible Solutions

– Resecure ECM/PCM connectors – Reprogram ECM/PCM – Replaced ECM/PCM
Note: The information on the P0604 error code is purely informative, if you need more useful information, please consult your technician.