P0604 Ford

Ford P0604 OBD-II Trouble Code Definition:

P0604 ECM Self Check Fault

P0604 Ford OBD-II Trouble CodeDescription:

OBD Trouble Code P0604
Internal Control Module Random Access Memory (RAM) Error
What does the code mean? OBD-ii 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 Sumptoms of OBD code P0604
– Engine Light ON (or Service Engine Soon Warning Light) – Engine may not start
Causes Causes of the OBD-II code 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.
Solutions – Resecure ECM/PCM connectors – Reprogram ECM/PCM – Replaced ECM/PCM