Category: Cadillac

P0540 Cadillac 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 Cadillac Description The Engine Control Module (ECM) uses an Intake Air Heater (IAH) to…

P0541 Cadillac Intake Air Heater Relay 1 Low Possible causes – Faulty Intake Air Heater Relay– Intake Air Heater Relay harness is open or shorted– Intake Air Heater Relay circuit poor electrical connection Tech description Dfuser P0541 Cadillac AIH Code Eliminator What about the obd code? The Engine Control Module (ECM) sends a bias voltage…

P0536 Cadillac 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…

P0537 Cadillac 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…

P0538 Cadillac 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…

P0539 Cadillac 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…

P0531 Cadillac 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…

P0532 Cadillac 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 Cadillac code…

P0533 Cadillac 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 Cadillac code is detected…

P0534 Cadillac 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…

P0535 Cadillac 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…

P0529 Cadillac Fan Speed Sensor Circuit Intermittent OBD Code: System: Subsystem:  P0529 Cadillac – (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: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe , Cadillac Eldorado ,…

P0530 Cadillac 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 Cadillac code is detected…

P0526 Cadillac Cooling Fan Speed Sensor Circuit Possible causes – Cooling fan harness and connector– Faulty cooling fan What about the obd code? The P0526 Cadillac 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…

P0527 Cadillac Fan Speed Sensor Circuit Range / Performance OBD Code: System: Subsystem:  P0527 Cadillac – (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: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe ,…

P0528 Cadillac 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 Cadillac Description The PCM has detected…

P0522 Cadillac 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 Cadillac is set when the Powertrain Control Module (PCM) senses…

P0523 Cadillac 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 Cadillac is detected when the signal sent from oil pressure…

P0524 Cadillac 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 Cadillac is detected when the circuit from oil pressure sensor to PCM…