P0456 Volkswagen EVAP System 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– Evaporative Emission (EVAP) canister or fuel tank leaks– Evaporative Emission (EVAP) system hose leaking– Fuel tank leaking Tech description 2001…
P0455 Volkswagen EVAP System Large Leak Detected
P0455 Volkswagen EVAP System Large Leak Detected 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 P0455 Volkswagen it
P0454 Volkswagen Evaporative Emission Control System Pressure Sensor Intermittent
P0454 Volkswagen Evaporative Emission Control System Pressure Sensor Intermittent 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 What about the obd code? An intermittent voltage signal from EVAP control system pressure sensor…
P0453 Volkswagen EVAP System Pressure Sensor/Switch High Input
P0453 Volkswagen EVAP System Pressure Sensor/Switch High 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 high voltage from the sensor is sent…
P0452 Volkswagen EVAP System Pressure Sensor/Switch Low Input
P0452 Volkswagen 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…
P0451 Volkswagen Fuel Tank Pressure Sensor Range/Performance
P0451 Volkswagen 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…
P0450 Volkswagen EVAP Emission System Pressure Sensor
P0450 Volkswagen 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…
P0449 Volkswagen EVAP System Vent Valve/Solenoid Circuit
P0449 Volkswagen EVAP System Vent Valve/Solenoid Circuit Possible causes – Purge Control Valve harness is open or shorted– Purge Control Valve electrical circuit poor connection– Faulty canister vent control valve What about the obd code? The Engine Control Module (ECM) has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in…
P0448 Volkswagen EVAP System Vent Control Circuit Shorted
P0448 Volkswagen EVAP System Vent Control Circuit Shorted 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? EVAP canister vent control valve remains closed under specified driving conditions. Symptoms – Engine Light ON (or Service Engine…
P0447 Volkswagen EVAP System Vent Control Circuit Open
P0447 Volkswagen 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…
P0446 Volkswagen Evaporative Emission Vent System Performance
P0446 Volkswagen 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…
P0445 Volkswagen EVAP Purge Solenoid Circuit
P0445 Volkswagen 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)…
P0444 Volkswagen Evaporative Emission Control System Purge Control Valve Circuit Open
P0444 Volkswagen 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…
P0443 Volkswagen EVAP Canister Purge Valve Circuit Malfunction
P0443 Volkswagen 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)…
P0442 Volkswagen EVAP Control System Leak Detected Small Leak
P0442 Volkswagen 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…
P0441 Volkswagen EVAP System Incorrect Purge Flow
P0441 Volkswagen 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 Volkswagen code means that the control module has detected a leak…
P0440 Volkswagen EVAP Canister Purge Regulator Valve
P0440 Volkswagen 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 Volkswagen code…
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…
P043D Volkswagen Catalyst Temperature Sensor Circuit High (Bank 2 – Sensor 2)
P043D Volkswagen Catalyst Temperature Sensor Circuit High (Bank 2 – Sensor 2) OBD Code: System: Subsystem: P043D Volkswagen – (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…
P043C Volkswagen Catalyst Temperature Sensor Circuit Low (Bank 2 – Sensor 2)
P043C Volkswagen Catalyst Temperature Sensor Circuit Low (Bank 2 – Sensor 2) OBD Code: System: Subsystem: P043C Volkswagen – (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…