P2655 Buick A Rocker Arm Actuator Control Circuit / Open (Bank 2) OBD Code: System: Subsystem: P2655 Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: A Rocker Arm Actuator Control Circuit / Open (Bank 2) Location: Analysis: Possible Causes: Bank 2 Open Circuit Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera…
Category: Buick
P264E Buick A Rocker Arm Actuator Position Sensor Circuit Intermittent / Erratic (Bank 1)
P2650 Buick B Rocker Arm Actuator Control Circuit / Open (Bank 1) OBD Code: System: Subsystem: P2650 Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: B Rocker Arm Actuator Control Circuit / Open (Bank 1) Location: Analysis: Possible Causes: Bank 1 Open Circuit Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera…
P2650 Buick B Rocker Arm Actuator Control Circuit / Open (Bank 1)
P2651 Buick B Rocker Arm Actuator System Performance / Stuck Off (Bank 1) OBD Code: System: Subsystem: P2651 Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: B Rocker Arm Actuator System Performance / Stuck Off (Bank 1) Location: Analysis: Possible Causes: Bank 1 Stuck Off Tech description: Buick Vehicle:Buick Regal –…
P2651 Buick B Rocker Arm Actuator System Performance / Stuck Off (Bank 1)
P2652 Buick B Rocker Arm Actuator System Stuck On (Bank 1) Possible causes – Low engine oil level – Faulty Rocker Arm Oil Control Solenoid – Faulty EOP (Engine Oil Pressure) sensor – Incorrect oil type used – Engine mechanical condition Tech description The most common problem that can set the P2652 Buick code is…
P264C Buick A Rocker Arm Actuator Position Sensor Circuit Low (Bank 1)
P264D Buick A Rocker Arm Actuator Position Sensor Circuit High (Bank 1) OBD Code: System: Subsystem: P264D Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: A Rocker Arm Actuator Position Sensor Circuit High (Bank 1) Location: Analysis: Possible Causes: Bank 1 End of Range – Circuit Higher Than Expected Tech description:…
P264D Buick A Rocker Arm Actuator Position Sensor Circuit High (Bank 1)
P264E Buick A Rocker Arm Actuator Position Sensor Circuit Intermittent / Erratic (Bank 1) OBD Code: System: Subsystem: P264E Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: A Rocker Arm Actuator Position Sensor Circuit Intermittent / Erratic (Bank 1) Location: Analysis: Possible Causes: Bank 1 Periodically Unstable Circuit Tech description: Buick…
P264B Buick A Rocker Arm Actuator Position Sensor Circuit Range / Performance (Bank 1)
P264C Buick A Rocker Arm Actuator Position Sensor Circuit Low (Bank 1) OBD Code: System: Subsystem: P264C Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: A Rocker Arm Actuator Position Sensor Circuit Low (Bank 1) Location: Analysis: Possible Causes: Bank 1 End of Range – Circuit Lower Than Expected Tech description:…
P2647 Buick VTEC Oil Pressure Switch Circuit High Voltage
P2648 Buick VTEC Solenoid Valve Circuit Low Voltage Possible causes – Check engine oil level and pressure– Faulty VTEC Solenoid Valve– VTEC Solenoid Valve harness is open or shorted– VTEC Solenoid Valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P2648 Buick Description The VTEC system activates the…
P2648 Buick VTEC Solenoid Valve Circuit Low Voltage
P2649 Buick VTEC Solenoid Valve Circuit High Voltage Possible causes – Check engine oil level and pressure– Faulty VTEC Solenoid Valve– VTEC Solenoid Valve harness is open or shorted– VTEC Solenoid Valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P2649 Buick Description The VTEC system activates the…
P2649 Buick VTEC Solenoid Valve Circuit High Voltage
P264A Buick A Rocker Arm Actuator Position Sensor Circuit (Bank 1) OBD Code: System: Subsystem: P264A Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: A Rocker Arm Actuator Position Sensor Circuit (Bank 1) Location: Analysis: Possible Causes: Bank 1 Circuit Issue Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick…
P264A Buick A Rocker Arm Actuator Position Sensor Circuit (Bank 1)
P264B Buick A Rocker Arm Actuator Position Sensor Circuit Range / Performance (Bank 1) OBD Code: System: Subsystem: P264B Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: A Rocker Arm Actuator Position Sensor Circuit Range / Performance (Bank 1) Location: Analysis: Possible Causes: Bank 1 Out of Expected Range Tech description:…
P2644 Buick Torque Management Feedback (Signal B) High
P2645 Buick Oil Control Valve for Variable Valve Timing and Lift Possible causes – Open or short circuit condition– Failed oil pressure switch– Failed oil control valve for VVTL P2645 Buick Description In order to improve engine performance at low and high speed, the Variable Valve Timing and Lift – intelligent (VVTL-i) system varies the…
P2645 Buick Oil Control Valve for Variable Valve Timing and Lift
P2646 Buick VTEC Oil Pressure Switch Circuit Low Voltage Possible causes – Check engine oil level and pressure– Faulty VTEC Oil Pressure Switch– VTEC Oil Pressure Switch harness is open or shorted– VTEC Oil Pressure Switch circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P2646 Buick Description The…
P2646 Buick VTEC Oil Pressure Switch Circuit Low Voltage
P2647 Buick VTEC Oil Pressure Switch Circuit High Voltage Possible causes – Check engine oil level and pressure– Faulty VTEC Oil Pressure Switch– VTEC Oil Pressure Switch harness is open or shorted– VTEC Oil Pressure Switch circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P2647 Buick Description The…
P2641 Buick Torque Management Feedback (Signal B)
P2642 Buick Torque Management Feedback (Signal B) Range / Performance OBD Code: System: Subsystem: P2642 Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: Torque Management Feedback (Signal B) Range / Performance Location: Analysis: Possible Causes: Signal B Out of Expected Range Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick…
P2642 Buick Torque Management Feedback (Signal B) Range / Performance
P2643 Buick Torque Management Feedback (Signal B) Low OBD Code: System: Subsystem: P2643 Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: Torque Management Feedback (Signal B) Low Location: Analysis: Possible Causes: Signal B Signal Too Low Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick…
P2643 Buick Torque Management Feedback (Signal B) Low
P2644 Buick Torque Management Feedback (Signal B) High OBD Code: System: Subsystem: P2644 Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: Torque Management Feedback (Signal B) High Location: Analysis: Possible Causes: Signal B Signal Too High Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick…
P2637 Buick Torque Management Feedback (Signal A)
P2638 Buick Torque Management Feedback (Signal A) Range / Performance OBD Code: System: Subsystem: P2638 Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: Torque Management Feedback (Signal A) Range / Performance Location: Analysis: Possible Causes: Signal A Out of Expected Range Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick…
P2638 Buick Torque Management Feedback (Signal A) Range / Performance
P2639 Buick Torque Management Feedback (Signal A) Low OBD Code: System: Subsystem: P2639 Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: Torque Management Feedback (Signal A) Low Location: Analysis: Possible Causes: Signal A Signal Too Low Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick…
P2639 Buick Torque Management Feedback (Signal A) Low
P2640 Buick Torque Management Feedback (Signal A) High OBD Code: System: Subsystem: P2640 Buick – (ASE) Powertrain Computer and Auxiliary Output Circuits Trouble Code Description: Torque Management Feedback (Signal A) High Location: Analysis: Possible Causes: Signal A Signal Too High Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick…