P053C Buick Positive Crankcase Ventilation Heater Control Circuit High OBD Code: System: Subsystem: P053C Buick – (ASE) Powertrain Vehicle Speed Control, Idle Controls, and Auxiliary Inputs Trouble Code Description: Positive Crankcase Ventilation Heater Control Circuit High Location: Analysis: Possible Causes: End of Range – Circuit Higher Than Expected Tech description: Buick Vehicle:Buick Regal –…
Category: Buick
P053C Buick Positive Crankcase Ventilation Heater Control Circuit High
P0540 Buick Intake Air Heater Feedback Circuit Possible causes – Intake air heater relay Tech description The most common problem that sets code p0540 is the air intake relay Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0540 Buick Description The Engine Control Module (ECM) uses an Intake Air Heater (IAH) to…
P0534 Buick Air Conditioning (A/C) Refrigerant Charge Loss
P0535 Buick A/C Evaporator Temperature Sensor Circuit Possible causes – Faulty Evaporator Temperature sensor– A/C evaporator temperature sensor harness is open or short– A/C evaporator temperature sensor circuit poor electrical connection What about the obd code? The Powertrain Control Moduel (PCM) has detected a fault in the temperature sensor circuit Symptoms – Engine Light ON…
P0535 Buick A/C Evaporator Temperature Sensor Circuit
P0536 Buick A/C Evaporator Temperature Circuit Range/Performance Possible causes – Faulty A/C Evaporator Temperature Sensor– A/C Evaporator Temperature Sensor harness is open or shorted– A/C Evaporator Temperature Sensor circuit poor electrical connection What about the obd code? When the A/C Evaporator Temperature (ACET) sensor signal is out of range the Powertrain Control Module (PCM) will…
P0536 Buick A/C Evaporator Temperature Circuit Range/Performance
P0537 Buick A/C Evaporator Temperature Circuit Low Input Possible causes – Faulty A/C Evaporator Temperature Sensor– A/C Evaporator Temperature Sensor harness is open or shorted– A/C Evaporator Temperature Sensor circuit poor electrical connection What about the obd code? When the A/C Evaporator Temperature (ACET) sensor signal is low the Powertrain Control Module (PCM) will triggered…
P0537 Buick A/C Evaporator Temperature Circuit Low Input
P0538 Buick A/C Evaporator Temperature Circuit High Input Possible causes – Faulty A/C Evaporator Temperature Sensor– A/C Evaporator Temperature Sensor harness is open or shorted– A/C Evaporator Temperature Sensor circuit poor electrical connection What about the obd code? When the A/C Evaporator Temperature (ACET) sensor signal is high the Powertrain Control Module (PCM) will triggered…
P0538 Buick A/C Evaporator Temperature Circuit High Input
P0539 Buick A/C Evaporator Temperature Circuit Intermittent Possible causes – Faulty A/C Evaporator Temperature Sensor– A/C Evaporator Temperature Sensor harness is open or shorted– A/C Evaporator Temperature Sensor circuit poor electrical connection What about the obd code? When the A/C Evaporator Temperature (ACET) sensor signal is intermittent the Powertrain Control Module (PCM) will triggered the…
P0532 Buick Air Conditioning (A/C) Refrigerant Pressure (Sensor A) Circuit Low
P0533 Buick A/C Refrigerant Pressure Sensor Circuit High Input Possible causes – A/C system low or over charge with refrigerant– Faulty A/C refrigerant pressure sensor– Cooling fans in-operative– A/C refrigerant pressure sensor circuit open or shorted– A/C refrigerant pressure sensor circuit poor electrical connection What about the obd code? The P0533 Buick code is detected…
P0533 Buick A/C Refrigerant Pressure Sensor Circuit High Input
P0534 Buick Air Conditioning (A/C) Refrigerant Charge Loss Possible causes – A/C system low or over charge with refrigerant– Faulty A/C refrigerant pressure sensor– Cooling fans in-operative– A/C refrigerant pressure sensor circuit open or shorted– A/C refrigerant pressure sensor circuit poor electrical connection What about the obd code? The ECM has detected that the AC…
P0529 Buick Fan Speed Sensor Circuit Intermittent
P0530 Buick Air Conditioning Refrigerant Pressure Sensor Circuit Possible causes – A/C system low or over charged with refrigerant– Faulty A/C Refrigerant Pressure Sensor– Cooling fans in-operative– A/C Refrigerant Pressure Sensor harness is open or shorted– A/C Refrigerant Pressure Sensor circuit poor electrical connection What about the obd code? The P0530 Buick code is detected…
P0530 Buick Air Conditioning Refrigerant Pressure Sensor Circuit
P0531 Buick Air Conditioning (A/C) Refrigerant Pressure (Sensor A) Circuit Range / Performance Possible causes – A/C system low or over charge with refrigerant– Faulty A/C refrigerant pressure sensor– Cooling fans in-operative– A/C refrigerant pressure sensor circuit open or shorted– A/C refrigerant pressure sensor circuit poor electrical connection What about the obd code? The P0531…
P0531 Buick Air Conditioning (A/C) Refrigerant Pressure (Sensor A) Circuit Range / Performance
P0532 Buick Air Conditioning (A/C) Refrigerant Pressure (Sensor A) Circuit Low Possible causes – A/C system low or over charge with refrigerant– Faulty A/C refrigerant pressure sensor– Cooling fans in-operative– A/C refrigerant pressure sensor circuit open or shorted– A/C refrigerant pressure sensor circuit poor electrical connection What about the obd code? The P0532 Buick code…
P0525 Buick Cruise Control Servo Control Circuit Range/Performance
P0526 Buick Cooling Fan Speed Sensor Circuit Possible causes – Cooling fan harness and connector– Faulty cooling fan What about the obd code? The P0526 Buick code is detected when the PCM has detected a loss of cooling fan speed signal and the condition is present for at least 11 seconds. Symptoms – Engine Light…
P0526 Buick Cooling Fan Speed Sensor Circuit
P0527 Buick Fan Speed Sensor Circuit Range / Performance OBD Code: System: Subsystem: P0527 Buick – (ASE) Powertrain Vehicle Speed Control, Idle Controls, and Auxiliary Inputs Trouble Code Description: Fan Speed Sensor Circuit Range / Performance Location: Analysis: Possible Causes: Out of Expected Range Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick…
P0527 Buick Fan Speed Sensor Circuit Range / Performance
P0528 Buick Fan Speed Sensor Circuit No Signal Possible causes – Faulty Fan Speed Sensor– Fan Speed Sensor harness is open or shorted– Fan Speed Sensor circuit poor electrical connection– Faulty fan clutch– Faulty PCM Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Engine overheating P0528 Buick Description The PCM has detected…
P0528 Buick Fan Speed Sensor Circuit No Signal
P0529 Buick Fan Speed Sensor Circuit Intermittent OBD Code: System: Subsystem: P0529 Buick – (ASE) Powertrain Vehicle Speed Control, Idle Controls, and Auxiliary Inputs Trouble Code Description: Fan Speed Sensor Circuit Intermittent Location: Analysis: Possible Causes: Circuit Sporatic / Not Continuous Tech description: Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David…
P0520 Buick Engine Oil Pressure Sensor/Switch Circuit Malfunction
P0521 Buick Engine Oil Pressure Sensor/Switch Circuit Range/Performance 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 P0521 Buick is detected when the signal sent from oil pressure sensor…
P0521 Buick Engine Oil Pressure Sensor/Switch Circuit Range/Performance
P0522 Buick Engine Oil Pressure Sensor Circuit Low Voltage 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 P0522 Buick is set when the Powertrain Control Module (PCM) senses…
P0522 Buick Engine Oil Pressure Sensor Circuit Low Voltage
P0523 Buick Engine Oil Pressure Sensor/Switch Circuit High Voltage 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 P0523 Buick is detected when the signal sent from oil pressure…
P0523 Buick Engine Oil Pressure Sensor/Switch Circuit High Voltage
P0524 Buick Engine Oil Pressure Sensor/Switch Circuit 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 P0524 Buick is detected when the circuit from oil pressure sensor to PCM…