P0450 Cadillac EVAP Emission System Pressure Sensor Possible causes – Faulty Evaporative Emission System (EVAP) Pressure Sensor– Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted– Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) What about the obd code? – An improper voltage signal from EVAP…
Category: Cadillac
P0451 Cadillac Fuel Tank Pressure Sensor Range/Performance
P0451 Cadillac Fuel Tank Pressure Sensor Range/Performance Possible causes – Fuel Tank Pressure Sensor– Fuel Tank Pressure sensor harness is open or shorted– Fuel Tank Pressure sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) What about the obd code? An improper voltage signal from the fuel tank pressure sensor is sent to Engine…
P0452 Cadillac EVAP System Pressure Sensor/Switch Low Input
P0452 Cadillac EVAP System Pressure Sensor/Switch Low Input Possible causes – Faulty Evaporative Emission System (EVAP) Pressure sensor– Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted– Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection Tech description What about the obd code? An excessively low voltage from the sensor is sent…
P0443 Cadillac EVAP Canister Purge Valve Circuit Malfunction
P0443 Cadillac EVAP Canister Purge Valve Circuit Malfunction Possible causes – Faulty Evaporative Emission (EVAP) Purge Solenoid Control– Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted– Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection What about the obd code? An improper voltage signal is sent to Engine Control Module (ECM)…
P0444 Cadillac Evaporative Emission Control System Purge Control Valve Circuit Open
P0444 Cadillac Evaporative Emission Control System Purge Control Valve Circuit Open Possible causes – Faulty Evaporative Emission (EVAP) Purge Solenoid Control– Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted– Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection What about the obd code? – An excessively low voltage signal is sent…
P0445 Cadillac EVAP Purge Solenoid Circuit
P0445 Cadillac EVAP Purge Solenoid Circuit Possible causes – Faulty Evaporative Emission (EVAP) Purge Solenoid Control– Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted– Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection What about the obd code? – An excessively high voltage signal is sent to Engine Control Module (ECM)…
P0446 Cadillac Evaporative Emission Vent System Performance
P0446 Cadillac Evaporative Emission Vent System Performance Possible causes – Plugged vapor canister– Faulty vent solenoid– Pinched or blocked EVAP hose– Faulty FTP sensor Tech description Dirt and dust intrusion into the EVAP canister vent hose assembly, resulting in restricted air flow, may cause this condition. What about the obd code? The Powertrain Control Module…
P0447 Cadillac EVAP System Vent Control Circuit Open
P0447 Cadillac EVAP System Vent Control Circuit Open Possible causes – Faulty canister vent control valve– Purge Control Valve harness is open or shorted– Purge Control Valve electrical circuit poor connection What about the obd code? An improper voltage signal is sent to Engine Control Module (ECM) through Evaporative Emission System (EVAP) canister vent control…
P043f Evaporative Emission System Reference Orifice High Flow
P043f Evaporative Emission System Reference Orifice High Flow Possible causes – Faulty Vacuum Pump Module– Vacuum Pump Module harness is open or shorted– Vacuum Pump Module circuit poor electrical connection.– Faulty Engine Control Module (ECM) What about the obd code? To determine leak criterion (Reference pressure), vacuum pump creates negative pressure in canister pump module…
P0440 Cadillac EVAP Canister Purge Regulator Valve
P0440 Cadillac EVAP Canister Purge Regulator Valve Possible causes – Missing or loose fuel cap– Incorrect fuel filler cap used– Fuel filler cap remains open or fails to close– Foreign matter caught in fuel filler cap– EVAP canister or fuel tank leaks– EVAP system hose leaking– Fuel tank leaking Tech description The P0440 Cadillac code…
P0441 Cadillac EVAP System Incorrect Purge Flow
P0441 Cadillac EVAP System Incorrect Purge Flow Possible causes – Missing Fuel cap– Incorrect fuel filler cap used– Fuel filler cap remains open or fails to close– Foreign matter caught in fuel filler cap– Incorrect fuel tank vacuum relief valve Tech description The P0441 Cadillac code means that the control module has detected a leak…
P0442 Cadillac EVAP Control System Leak Detected Small Leak
P0442 Cadillac EVAP Control System Leak Detected Small Leak Possible causes – Missing or loose fuel cap– Incorrect fuel filler cap used– Fuel filler cap remains open or fails to close– Foreign matter caught in fuel filler cap – EVAP canister or fuel tank leaks– EVAP system hose leaking– Fuel tank leaking Tech description What…
P043A Cadillac Catalyst Temperature Sensor Circuit (Bank 2 – Sensor 2)
P043A Cadillac Catalyst Temperature Sensor Circuit (Bank 2 – Sensor 2) OBD Code: System: Subsystem: P043A Cadillac – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Catalyst Temperature Sensor Circuit (Bank 2 – Sensor 2) Location: Analysis: Possible Causes: Bank 2 – Sensor 2 Circuit Issue Tech description: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe…
P043B Cadillac Catalyst Temperature Sensor Circuit Range / Performance (Bank 2 – Sensor 2)
P043B Cadillac Catalyst Temperature Sensor Circuit Range / Performance (Bank 2 – Sensor 2) OBD Code: System: Subsystem: P043B Cadillac – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Catalyst Temperature Sensor Circuit Range / Performance (Bank 2 – Sensor 2) Location: Analysis: Possible Causes: Bank 2 – Sensor 2 Out of Expected Range Tech…
P043C Cadillac Catalyst Temperature Sensor Circuit Low (Bank 2 – Sensor 2)
P043C Cadillac Catalyst Temperature Sensor Circuit Low (Bank 2 – Sensor 2) OBD Code: System: Subsystem: P043C Cadillac – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Catalyst Temperature Sensor Circuit Low (Bank 2 – Sensor 2) Location: Analysis: Possible Causes: Bank 2 – Sensor 2 End of Range – Circuit Lower Than Expected Tech…
P043D Cadillac Catalyst Temperature Sensor Circuit High (Bank 2 – Sensor 2)
P043D Cadillac Catalyst Temperature Sensor Circuit High (Bank 2 – Sensor 2) OBD Code: System: Subsystem: P043D Cadillac – (ASE) Powertrain Auxiliary Emission Controls Trouble Code Description: Catalyst Temperature Sensor Circuit High (Bank 2 – Sensor 2) Location: Analysis: Possible Causes: Bank 2 – Sensor 2 End of Range – Circuit Higher Than Expected Tech…
P0435 Cadillac Catalyst Temperature Sensor Circuit Bank 2 Sensor 1
P0435 Cadillac Catalyst Temperature Sensor Circuit Bank 2 Sensor 1 Possible causes – Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection– Faulty Catalyst Temperature Sensor Tech description As the code description implies the P0435 Cadillac code means that the vehicle’s control module has detected that the three-way catalytic…
P0436 Cadillac Catalyst Temperature Sensor Range/Performance Bank 2 Sensor 1
P0436 Cadillac Catalyst Temperature Sensor Range/Performance Bank 2 Sensor 1 Possible causes – Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection– Faulty Catalyst Temperature Sensor Tech description As the code description implies the P0436 Cadillac code means that the vehicle’s control module has detected that the three-way catalytic…
P0437 Cadillac Catalyst Temperature Sensor Low Input Bank 2 Sensor 1
P0437 Cadillac Catalyst Temperature Sensor Low Input Bank 2 Sensor 1 Possible causes – Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection– Faulty Catalyst Temperature Sensor Tech description As the code description implies the P0437 Cadillac code means that the vehicle’s control module has detected that the three-way…
P0438 Cadillac Catalyst Temperature Sensor High Input Bank 2 Sensor 1
P0438 Cadillac Catalyst Temperature Sensor High Input Bank 2 Sensor 1 Possible causes – Catalyst Temperature Sensor harness is open or shorted– Catalyst Temperature Sensor circuit poor electrical connection– Faulty Catalyst Temperature Sensor Tech description As the code description implies the P0438 Cadillac code means that the vehicle’s control module has detected that the three-way…