Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– ECM Programming Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0657 CHRYSLER OBD Code Description The Transmission Control Moduel (TCM) has detected a voltage supply fault to the hydraulic control unit
Tag: P0657
P0657 ACURA Air/Fuel Ratio Sensor Relay Circuit Malfunction
Possible causes – Faulty Air/Fuel Ration Sensor Relay– Air/Fuel Ration Sensor Relay harness is open or shorted– Air/Fuel Ration Sensor Relay circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)