Category: OBDii Powertrain Codes

P0471 Exhaust Pressure Sensor Range/Performance Possible causes – Faulty Exhaust Back Pressure Sensor– Exhaust Back Pressure Sensor harness is open or shorted– Exhaust Back Pressure Sensor circuit poor electrical connection What about the obd code? An Exhaust Back Pressure (EBP) signal that is detected out of range (high or low) by the Engine Control Module…

P0472 Exhaust Pressure Sensor Low Possible causes – Faulty Exhaust Back Pressure Sensor– Exhaust Back Pressure Sensor harness is open or shorted– Exhaust Back Pressure Sensor circuit poor electrical connection Tech description Replacing the exhaust back pressure usually takes care of the problem What about the obd code? An Exhaust Back Pressure (EBP) signal that…

P0473 Exhaust Pressure Sensor High Possible causes – Faulty Exhaust Back Pressure Sensor– Exhaust Back Pressure Sensor harness is open or shorted– Exhaust Back Pressure Sensor circuit poor electrical connection Tech description Replacing the exhaust back pressure usually takes care of the problem What about the obd code? An Exhaust Back Pressure (EBP) signal that…

P0474 Exhaust Pressure Sensor Intermittent Possible causes – Faulty Exhaust Back Pressure Sensor– Exhaust Back Pressure Sensor harness is open or shorted– Exhaust Back Pressure Sensor circuit poor electrical connection Tech description Replacing the exhaust back pressure usually takes care of the problem What about the obd code? An Exhaust Back Pressure (EBP) signal that…

P0475 Exhaust Pressure Control Valve Malfunction Possible causes – Faulty Exhaust Back Pressure Valve– Exhaust Back Pressure Valve harness is open or shorted– Exhaust Back Pressure Valve circuit poor electrical connection Tech description Check the Exhaust Back Pressure Valve (EBPV) butterfly valve is opening and closing freely and not sticking. If it seems to move…

P0476 Exhaust Pressure Control Valve Range/Performance Possible causes – Faulty Exhaust Back Pressure Valve– Exhaust Back Pressure Valve harness is open or shorted– Exhaust Back Pressure Valve circuit poor electrical connection Tech description Check the Exhaust Back Pressure Valve (EBPV) butterfly valve is opening and closing freely and not sticking. If it seems to move…

P0466 Purge Flow Sensor Circuit Range/Performance Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0466 Information for specific makes

P0467 Purge Flow Sensor Circuit Low Input Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0467 Information for specific makes

P0458 EVAP System Purge Control Solenoid Low 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? The Engine Control Module (ECM) has detected a low voltage on the…

P0459 EVAP System Purge Control Solenoid High 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? The Engine Control Module (ECM) has detected a high voltage on the…

P0460 Fuel Level Sensor Circuit Possible causes – Faulty Fuel Level Sensor– Fuel Level Sensor harness is open or shorted– Fuel Level Sensor circuit poor electrical connection – Faulty combination meter What about the obd code? Even though the vehicle is parked, a signal being varied is sent from the fuel level sensor to Engine…

P0461 Fuel Level Sensor Circuit Range/Performance Possible causes – Faulty fuel level sensor– Fuel level sensor harness is open or shorted– Fuel level sensor circuit poor electrical connection What about the obd code? The output signal of the fuel level sensor does not change within the specified range even though the vehicle has been driven…

P0462 Fuel Level Sensor Circuit Low Input Possible causes – Faulty fuel level sensor– Fuel level sensor harness is open or shorted– Fuel level sensor circuit poor electrical connection Tech description Low fuel level can trigger this code. Before replacing any parts try filling up the fuel tank and erasing the engine code. If the…

P0463 Fuel Level Sensor Circuit High Input Possible causes – Faulty fuel level sensor– Fuel level sensor harness is open or shorted– Fuel level sensor circuit poor electrical connection What about the obd code? An excessively high voltage is sent from the sensor is sent to Engine Control Module (ECM). Symptoms – Engine Light ON…

P0464 Fuel Level Sensor Circuit Intermittent Possible causes – Faulty fuel level sensor– Fuel level sensor harness is open or shorted– Fuel level sensor circuit poor electrical connection What about the obd code? An intermittent low voltage is sent from the sensor is sent to Engine Control Module (ECM). Symptoms – Engine Light ON (or…

P0465 Purge Flow Sensor Circuit Malfunction Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P0450 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 control…

P0451 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 Control…

P0452 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 to…

P0453 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 to…