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Home » OBD Codes » P0400-P0499

OBD Codes

P043C Catalyst Temperature Sensor Circuit Low (Bank 2 Sensor 2) P043D Catalyst Temperature Sensor Circuit High (Bank 2 Sensor 2) P043E Evaporative Emission System Leak Detection Reference Orifice Low Flow P043F Evaporative Emission System Leak Detection Reference Orifice High Flow P0440 Evaporative Emission Control System Malfunction P0441 Evaporative Emission Control System Incorrect Purge Flow P0442 Evaporative Emission Control System Leak Detected (small leak) P0443 Evaporative Emission Control System Purge Control Valve Circuit P0444 Evaporative Emission Control System Purge Control Valve Circuit Open P0445 Evaporative Emission Control System Purge Control Valve Circuit Shorted P0446 Evaporative Emission Control System Vent Control Circuit Malfunction P0447 Evaporative Emission Control System Vent Control Circuit Open P0448 Evaporative Emission Control System Vent Control Circuit Shorted P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction P044A Exhaust Gas Recirculation Sensor “C” Circuit P044B Exhaust Gas Recirculation Sensor “C” Circuit Range/Performance P044C Exhaust Gas Recirculation Sensor “C” Circuit Low P044D Exhaust Gas Recirculation Sensor “C” Circuit High P044E Exhaust Gas Recirculation Sensor “C” Circuit Intermittent/Erratic P044F Secondary Air Injection System Switching Valve “A” Circuit High P0450 Evaporative Emission Control System Pressure Sensor Malfunction P0451 Evaporative Emission Control System Pressure Sensor Range/Performance P0452 Evaporative Emission Control System Pressure Sensor Low Input P0453 Evaporative Emission Control System Pressure Sensor High Input P0454 Evaporative Emission Control System Pressure Sensor Intermittent P0455 Evaporative Emission Control System Leak Detected (gross leak) P0456 Evaporative Emissions System Small Leak Detected P0457 Evaporative Emission Control System Leak Detected P0458 Evaporative Emission System Purge Control Valve Circuit Low P0459 Evaporative Emission System Purge Control Valve Circuit High
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