Category: Buick

P063A Buick Generator Voltage Sensore Circuit OBD Code: System: Subsystem:  P063A Buick – (ASE)  Powertrain  Computer and Auxiliary Output Circuits Trouble Code Description: Generator Voltage Sensore Circuit Location: Analysis: Possible Causes:    Circuit Issue   Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse…

P0636 Buick Power Steering Control Circuit Low Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick…

P0637 Buick Power Steering Control Circuit High Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick…

P0632 Buick 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…

P0633 Buick 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 Buick Description The Engine Control Module (ECM), the Powertrain…

P0634 Buick 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…

P0635 Buick Power Steering Control Circuit Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave…

P0631 Buick VIN Not Programmed or Incompatible Transmission Control Module (TCM) OBD Code: System: Subsystem:  P0631 Buick – (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: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse –…

P0629 Buick 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 Buick Description When the ignition…

P062A Buick Fuel Pump A Control Circuit Range/Performance 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) P062A Buick Description When the ignition…

P0628 Buick 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…

P0624 Buick Fuel Cap Lamp Control Circuit Possible causes – Fuel cap circuit open or short circuit condition– Fuel cap circuit poor electrical connection– Fuel cap circuit bulb faulty– Instrument cluster faulty Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar…

P0625 Buick Generator Field Terminal Circuit Low Possible causes – Faulty battery– Generator drive belt missing or loose– Faulty Generator– Generator harness is open or shorted– Generator circuit poor electrical connection Tech description If the battery is OK then the alternator is more than likely the problem. What about the obd code? The Engine Control…

P0626 Buick Generator Field Terminal Circuit High Possible causes – Faulty battery– Generator drive belt missing or loose– Faulty Generator– Generator harness is open or shorted– Generator circuit poor electrical connection Tech description If the battery is OK then the alternator is more than likely the problem. Symptoms – Engine Light ON (or Service Engine…