Possible causes – Low transmission fluid level– Dirty transmission fluid– Faulty torque converter clutch solenoid valve– Torque converter clutch solenoid valve harness or connectors– Torque converter clutch solenoid valve circuit is open or shorted– Transmission internal mechanical problem Tech notes

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 notes The P0441 code means that

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– Vent control valve harness is open or shorted– Vent control valve circuit poor

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

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

Possible causes – Park/neutral position (PNP) relay (starter relay)– Park/neutral position (PNP) relay (starter relay) harness is open or shorted– Park/neutral position (PNP) relay (starter relay) circuit poor electrical connection– Faulty Transmission Control Module (TCM) When is the code detected?

Possible causes – Canister Purge Valve harness is open or shorted– Canister Purge Valve circuit poor electrical connection– Faulty Canister Purge Valve Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Accelerator Pedal Position (APP) Sensor– Accelerator Pedal Position (APP) Sensor harness is open or shorted– Accelerator Pedal Position (APP) Sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service

Possible causes – Faulty Accelerator Pedal Position (APP) Sensor– Accelerator Pedal Position (APP) Sensor harness is open or shorted– Accelerator Pedal Position (APP) Sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service

Possible causes – Faulty Accelerator Pedal Position (APP) Sensor– Accelerator Pedal Position (APP) Sensor harness is open or shorted– Accelerator Pedal Position (APP) Sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service

Possible causes – Faulty Accelerator Pedal Position (APP) Sensor– Accelerator Pedal Position (APP) Sensor harness is open or shorted– Accelerator Pedal Position (APP) Sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service

Possible causes – Faulty Accelerator Pedal Position (APP) Sensor– Accelerator Pedal Position (APP) Sensor harness is open or shorted– Accelerator Pedal Position (APP) Sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service

Possible causes – Faulty Accelerator Pedal Position (APP) Sensor– Accelerator Pedal Position (APP) Sensor harness is open or shorted– Accelerator Pedal Position (APP) Sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service

Possible causes – Faulty Accelerator Pedal Position (APP) Sensor– Accelerator Pedal Position (APP) Sensor harness is open or shorted– Accelerator Pedal Position (APP) Sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service

Possible causes – Faulty Air fuel Ratio (A/F) Bank 1 Sensor 1– Air fuel Ratio (A/F) Bank 1 Sensor 1 harness is open or shorted– Air fuel Ratio (A/F) Bank 1 Sensor 1 circuit poor electrical connection– Fuel pressure– Fuel

Possible causes – Faulty Air fuel Ratio (A/F) Bank 2 Sensor 1– Air fuel Ratio (A/F) Bank 2 Sensor 1 harness is open or shorted– Air fuel Ratio (A/F) Bank 2 Sensor 1 circuit poor electrical connection– Fuel pressure– Fuel

Possible causes – Faulty Air/Fuel Ratio Sensor Bank 1 Sensor 1– Air/Fuel Ratio Sensor Bank 1 Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor Bank 1 Sensor 1 circuit poor electrical conection Symptoms – Engine Light ON (or

Possible causes – Faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1– Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 harness is open or shorted– Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection – Faulty Engine

Possible causes – Faulty Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 harness is open or shorted– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection – Faulty Engine