Category: Buick

P0525 Buick Cruise Control Servo Control Circuit Range/Performance Possible causes – Cruise control servo control poor electrical connection– Faulty cruise control servo 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…

P0516 Buick Battery Temperature Sensor Circuit Low Possible causes – Faulty Battery Temperature Sensor– Battery Temperature Sensor harness is open or shorted– Battery Temperature Sensor circuit poor electrical connection What about the obd code? Battery temperature sensor output value is 0.2 V or less for 0.5 seconds or more with the ignition switch ON Symptoms…

P0517 Buick Battery Temperature Sensor Circuit High Possible causes – Faulty Battery Temperature Sensor– Battery Temperature Sensor harness is open or shorted– Battery Temperature Sensor circuit poor electrical connection What about the obd code? Battery temperature sensor output value is 4.8 V or more for 0.5 seconds or more with the ignition switch ON Symptoms…

P0518 Buick Idle Air Control Circuit Intermittent Possible causes – Faulty Idle Air Control Valve– Vacuum leak– Idle Air Control Valve harness is open or shorted– Idle Air Control Valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse –…

P0519 Buick Idle Control System Malfunction Possible causes – Faulty Idle Air Control Valve– Vacuum leak– Idle Air Control Valve harness is open or shorted– Idle Air Control Valve circuit poor electrical connection Tech description Clean Idle Air Control Valve (IACV) – Warm up Engine– Remove the intercooler and set aside– Disconnect the Mass Airflow…

P0520 Buick Engine Oil Pressure Sensor/Switch Circuit Malfunction Possible causes – Low oil level or motor mechanical fault– Faulty oil pressure sensor– Oil Pressure Sensor harness is open or shorted– Oil Pressure Sensor circuit poor electrical connection What about the obd code? The P0520 Buick is detected when the circuit from oil pressure sensor to…

P0512 Buick Starter Request Circuit Possible causes – Open or short circuit condition– Poor electrical connection Tech description For models the P0512 Buick code could be triggered by the immobilizer system. The immobilizer system is not receiving the signal from the antenna ring, replacing the antenna ring and clear the code usually takes care of…

P0513 Buick Incorrect Immobilizer Key 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 P0513 Buick Description The Engine Control Module (ECM), the Powertrain Interface…

P0514 Buick Temperature Sensor Rationality Possible causes – Faulty Battery Temperature Sensor– Battery Temperature Sensor harness is open or shorted– Battery Temperature Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Engine overheating P0514 Buick Description The Battery Temperature Sensor (BTS) is attached to the battery tray located…

P0515 Buick Battery Temperature Sensor Circuit OBD Code: System: Subsystem:  P0515 Buick – (ASE)  Powertrain  Vehicle Speed Control, Idle Controls, and Auxiliary Inputs Trouble Code Description: Battery Temperature Sensor Circuit Location: Analysis: Possible Causes:    Circuit Issue   Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century…

P0511 Buick Idle Control System Malfunction Possible causes – Idle Air Control Valve (IACV)/Auxiliary Air Control (AAC) Valve harness is open or shorted– Idle Air Control Valve (IACV)/Auxiliary Air Control (AAC) Valve circuit poor electrical connection– Faulty Idle Air Control Valve (IACV)/Auxiliary Air Control (AAC) Valve What about the obd code? The P0511 Buick code…

P0506 Buick Idle Air Control System RPM Lower Than Expected Large vacuum leak on engine Possible causes – Dirty throttle body– Electric throttle control actuator misadjusted or damaged– Faulty Electric throttle control actuator– Intake air leak– Poor electrical connection to the Intake Air Control (IAC) valve Tech description If there are no intake leaks, clean…

P0507 Buick Idle Air Control System RPM Higher Than Expected Possible causes – Dirty throttle body– Electric throttle control actuator misadjusted or damaged– Faulty Electric throttle control actuator– Intake air leak– Poor electrical connection to the Intake Air Control (IAC) valve Tech description If there are no intake leaks, clean throttle body, adjust engine idle…

P0508 Buick Idle Air Control Valve Sense Circuit Low Possible causes – Dirty throttle body– Electric throttle control actuator misadjusted or damaged– Faulty Electric throttle control actuator– Intake air leak– Poor electrical connection to the Intake Air Control (IAC) valve Tech description If there are no intake leaks, clean throttle body, adjust engine idle and…

P0509 Buick Idle Air Control System Circuit High Possible causes – Dirty throttle body– Electric throttle control actuator misadjusted or damaged– Faulty Electric throttle control actuator– Intake air leak– Poor electrical connection to the Intake Air Control (IAC) valve Tech description If there are no intake leaks, clean throttle body, adjust engine idle and erase…

P050A Buick Cold Start Idle Air Control System Performance OBD Code: System: Subsystem:  P050A Buick – (ASE)  Powertrain  Vehicle Speed Control, Idle Controls, and Auxiliary Inputs Trouble Code Description: Cold Start Idle Air Control System Performance Location: Analysis: Possible Causes:       Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David…