Category: OBDii Powertrain Codes

P0630 VIN Not Programmed or Mismatch Possible causes – Engine Control Module (ECM) Programming error– Vehicle Identification Number (VIN) not programmed to ECM– Faulty or wrong ECM Tech description If a new ECM is installed in a vehicle, the Vehicle Identification Number (VIN) has to be reprogrammed to the new Engine Control Module (ECM). What…

P0631 VIN Not Programmed or Incompatible Transmission Control Module (TCM) OBD Code: System: Subsystem:  P0631 – (ASE)  Powertrain  Computer and Auxiliary Output Circuits Trouble Code Description: VIN Not Programmed or Incompatible Transmission Control Module (TCM) Location: Analysis: Possible Causes:       Tech description:

P0632 Odometer Not Programmed or Mismatch Possible causes – Engine Control Module (ECM) Programming error– Odometer not programmed to ECM– Faulty or wrong ECM Tech description If a new ECM/PCM is installed in a vehicle, the mileage has to be reprogrammed to the new ECM/PCM What about the obd code? Mileage on odometer does not…

P0633 Immobilizer Key Not Programmed Possible causes – Deterrent key not programmed to vheicle– Faulty Deterrent key– Fualty ignition switch– Poor electrical connection for Deterrent circuit components Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– No or hard engine start situation P0633 Description The Engine Control Module (ECM), the Powertrain Interface Module…

P0634 Transmission Control Module Overtemperature Possible causes – Obstructions in the airflow of the radiator or transmission cooler– Kinked or damaged transmission fluid lines– Damage to the transmission cooler Tech description Check transmission fluid level and condition and replaced fluid if necessary. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0634 Description…

P0635 Power Steering Control Circuit Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P0636 Power Steering Control Circuit Low Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P0637 Power Steering Control Circuit High Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P0638 Throttle Actuator Control Range/Performance Possible causes – Drive-by-wire control system malfunction– Throttle actuator malfunction– Throttle valve malfunction– PCM malfunction Tech description Dirty or clogged throttle body can triggered the P0638 code. Before replacing any parts try cleaning the throttle body and reset the engine light. Symptoms – Engine Light ON (or Service Engine Soon…

P0627 Fuel Pump Control System Malfunction Possible causes – Faulty fuel pump relay– Fuel pump harness is open or shorted– Fuel pump circuit poor electrical connection– Faulty fuel pump control module (if applicable) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0627 Description The Engine Control Module (ECM) has detected an open…

P0628 Low Voltage Detected At The Fuel Lift Pump Possible causes – Faulty Fuel Lift Pump– Fuel Lift Pump harness is open or shorted– Fuel Lift Pump circuit poor electrical connection Tech description Usually the solution to the problem is the fuel lift pump What about the obd code? – Engine Light ON (or Service…

P0629 Fuel Pump A Control Circuit High Possible causes – Faulty Fuel Pump– Fuel pump harness is open or shorted– Fuel pump circuit poor electrical connection– Faulty Fuel Pump Relay– Faulty fuel pump control module (if applicable) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0629 Description When the ignition switch is…