P0649 Buick Speed Control Lamp 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…
Category: Buick
P0649 Buick Speed Control Lamp Control Circuit
P0650 Buick Malfunction Indicator Lamp Control Circuit Malfunction Possible causes – Faulty Malfunction Indicator Lamp Bulb– Malfunction Indicator Lamp Bulb harness is open or shorted– Malfunction Indicator Lamp Bulb circuit poor electrical connection– Faulty Engine Control Module (ECM) What about the obd code? – An excessively high voltage is sent to Engine Control Module (ECM)…
P0650 Buick Malfunction Indicator Lamp Control Circuit Malfunction
P0651 Buick Sensor Reference Voltage B Circuit Fault Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit What about the obd code? The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher or…
P0651 Buick Sensor Reference Voltage B Circuit Fault
P0652 Buick Sensor Reference Voltage B Circuit Low Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit What about the obd code? The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is lower than…
P0643 Buick Sensor Reference Voltage A Circuit High
P0644 Buick Driver Display Serial Communication 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…
P0644 Buick Driver Display Serial Communication Circuit
P0645 Buick Air Conditioning Clutch Relay Circuit Malfunction Possible causes – Faulty Air Conditioning Clutch Relay– Air Conditioning Clutch Relay harness is open or shorted– Air Conditioning Clutch Relay circuit poor electrical connection What about the obd code? The P0645 Buick code is stored if an open or short exists in A/C clutch relay control…
P0645 Buick Air Conditioning Clutch Relay Circuit Malfunction
P0646 Buick Air Conditioning Clutch Relay Circuit Low Possible causes – Faulty Air Conditioning Clutch Relay– Air Conditioning Clutch Relay harness is open or shorted– Air Conditioning Clutch Relay circuit poor electrical connection What about the obd code? Code P0646 Buick may be stored if an open or short exists in A/C clutch relay control…
P0646 Buick Air Conditioning Clutch Relay Circuit Low
P0647 Buick Air Conditioning Clutch Relay Circuit High Possible causes – Faulty Air Conditioning Clutch Relay– Air Conditioning Clutch Relay harness is open or shorted– Air Conditioning Clutch Relay circuit poor electrical connection What about the obd code? Code P0647 Buick may be stored if an open or short exists in A/C clutch relay control…
P0647 Buick Air Conditioning Clutch Relay Circuit High
P0648 Buick Immobilizer Lamp 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…
P063F Buick Auto Configuration Engine Coolant Temperature (ECT) Input Not Present
P0640 Buick Manifold Intake Air Heater Possible causes – Faulty Intake Air Heater– Intake Air Heater harness is open or shorted– Intake Air Heater circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0640 Buick Description The intake air (IA) heater is located in the air inlet tube and…
P0640 Buick Manifold Intake Air Heater
P0641 Buick 5 Volt Reference Voltage Incorrect Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit What about the obd code? The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher or lower…
P0641 Buick 5 Volt Reference Voltage Incorrect
P0642 Buick Sensor Voltage Circuit A Low Voltage Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit Tech description There is a factory service bulletin for the P0642 Buick code for the following models: 2005-2007 Audi A32005-2007 Audi A42007…
P0642 Buick Sensor Voltage Circuit A Low Voltage
P0643 Buick Sensor Reference Voltage A Circuit High Possible causes – Faulty Engine Control Module (ECM)– ECM harness is open or shorted– ECM circuit poor electrical connection– Shorted sensor on 5 volt circuit What about the obd code? The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher than…
P063A Buick Generator Voltage Sensore Circuit
P063B Buick Generator Voltage Sensore Circuit Range / Performance OBD Code: System: Subsystem: P063B Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: Generator Voltage Sensore Circuit Range / Performance Location: Analysis: Possible Causes: Out of Expected Range Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David…
P063B Buick Generator Voltage Sensore Circuit Range / Performance
P063C Buick Generator Voltage Sensore Circuit Low OBD Code: System: Subsystem: P063C Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: Generator Voltage Sensore Circuit Low Location: Analysis: Possible Causes: End of Range – Circuit Lower Than Expected Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David…
P063C Buick Generator Voltage Sensore Circuit Low
P063D Buick Generator Voltage Sensor Circuit High OBD Code: System: Subsystem: P063D Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: Generator Voltage Sensor Circuit High Location: Analysis: Possible Causes: End of Range – Circuit Higher Than Expected Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David…
P063D Buick Generator Voltage Sensor Circuit High
P063E Buick Auto Configuration Throttle Input Not Present OBD Code: System: Subsystem: P063E Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: Auto Configuration Throttle Input Not Present Location: Analysis: Possible Causes: Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century…
P063E Buick Auto Configuration Throttle Input Not Present
P063F Buick Auto Configuration Engine Coolant Temperature (ECT) Input Not Present OBD Code: System: Subsystem: P063F Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: Auto Configuration Engine Coolant Temperature (ECT) Input Not Present Location: Analysis: Possible Causes: Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse –…
P0635 Buick Power Steering Control Circuit
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…
P0636 Buick Power Steering Control Circuit Low
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…