P04xx OBD Codes

P0400 Exhaust Gas Recirculation Flow Malfunction P0401 Exhaust Gas Recirculation Flow Insufficient Detected P0402 Exhaust Gas Recirculation Flow Excessive Detected P0403 Exhaust Gas Recirculation Circuit Malfunction P0404 Exhaust Gas Recirculation Circuit Range/Performance P0405 EGR Sensor A Circuit Low P0406 EGR Sensor A Circuit High P0407 Exhaust Gas Recirculation Sensor B Circuit Low P0408 Exhaust Gas Recirculation Sensor B Circuit High P0409 Exhaust Gas Recirculation Sensor B Circuit P0410 Secondary Air Injection System Malfunction P0411 Secondary Air Injection Incorrect Flow P0412 Secondary Air Injection System Switching Valve A Circuit Malfunction P0413 Secondary Air Injection System Switching Valve A Circuit Open P0414 Secondary Air Injection System Switching Valve A Circuit Shorted P0415 Secondary Air Injection System Switching Valve B Circuit Malfunction P0416 Secondary Air Injection System Switching Valve B Circuit Open P0417 Secondary Air Injection System Switching Valve B Circuit Shorted P0418 Secondary Air Injection System Relay A Circuit Malfunction P0419 Secondary Air Injection System Relay B Circuit Malfunction P0420 Catalyst System Efficiency Below Threshold (Bank 1) P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1) P0422 Main Catalyst Efficiency Below Threshold (Bank 1) P0423 Heated Catalyst Efficiency Below Threshold (Bank 1) P0424 Heated Catalyst Temperature Below Threshold (Bank 1) P0425 Catalyst Temperature Sensor Circuit (Bank 1 Sensor 1) P0426 Catalyst Temperature Sensor Range/Performance (Bank 1 Sensor 1) P0427 Catalyst Temperature Sensor Low Input (Bank 1 Sensor 1) P0428 Catalyst Temperature Sensor High Input (Bank 1 Sensor 1) P0429 Catalyst Heater Control Circuit (Bank 1) P0430 Catalyst System Efficiency Below Threshold (Bank 2) P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2) P0432 Main Catalyst Efficiency Below Threshold (Bank 2) P0433 Heated Catalyst Efficiency Below Threshold (Bank 2) P0434 Heated Catalyst Temperature Below Threshold (Bank 2) P0435 Catalyst Temperature Sensor Circuit (Bank 2 Sensor 1) P0436 Catalyst Temperature Sensor Range/Performance (Bank 2 Sensor 1) P0437 Catalyst Temperature Sensor Low Input (Bank 2 Sensor 1) P0438 Catalyst Temperature Sensor High Input (Bank 2 Sensor 1) P0439 Catalyst Heater Control Circuit (Bank 2) P0440 Evaporative Emission Control System Malfunction P0441 Evaporative Emission Control System Incorrect Purge Flow P0442 Evaporative Emission Control System Leak Detected (Small Leak) P0443 EVAP Purge Valve Circuit P0444 Evaporative Emission Control System Purge Control Valve Circuit Open P0445 Evaporative Emission Control System Purge Control Valve Circuit Shorted P0446 EVAP Vent Control Circuit P0447 EVAP Vent Control Circuit Open P0448 Evaporative Emission Control System Vent Control Circuit Shorted P0449 EVAP Vent Valve Circuit P0450 EVAP Pressure Sensor Malfunction P0451 EVAP Pressure Sensor Range/Performance P0452 EVAP Pressure Sensor Low Input P0453 EVAP Pressure Sensor High Input P0454 EVAP Pressure Sensor Intermittent P0455 Evaporative Emission Control System Leak Detected (Gross Leak) P0456 Evaporative Emission Control System Leak Detected (Very Small Leak) P0457 Evaporative Emission Control System Leak Detected (Fuel Cap Loose/Off) P0458 EVAP Purge Valve Circuit Low P0459 EVAP Purge Valve Circuit High P0460 Fuel Level Sensor Circuit Malfunction P0461 Fuel Level Sensor Circuit Range/Performance P0462 Fuel Level Sensor Circuit Low Input P0463 Fuel Level Sensor Circuit High Input P0464 Fuel Level Sensor Circuit Intermittent P0465 Purge Flow Sensor Sensor Circuit P0466 Purge Flow Sensor Sensor Range/Performance P0467 Purge Flow Sensor Sensor Low Input P0468 Purge Flow Sensor Sensor High Input P0469 Purge Flow Sensor Sensor Intermittent P0470 Exhaust Pressure Sensor Circuit P0471 Exhaust Pressure Sensor Range/Performance P0472 Exhaust Pressure Sensor Low Input P0473 Exhaust Pressure Sensor High Input P0474 Exhaust Pressure Sensor Intermittent P0475 Exhaust Pressure Control Valve A Control Valve A Malfunction P0476 Exhaust Pressure Control Valve A Control Valve A Range/Performance P0477 Exhaust Pressure Control Valve A Control Valve A Low P0478 Exhaust Pressure Control Valve A Control Valve A High P0479 Exhaust Pressure Control Valve A Control Valve A Intermittent P0480 Cooling Fan 1 Control Circuit P0481 Cooling Fan 2 Control Circuit P0482 Cooling Fan 3 Control Circuit P0483 Cooling Fan Rationality Check Malfunction P0484 Cooling Fan Circuit Over Current P0485 Cooling Fan Power/Ground Circuit Malfunction P0486 Exhaust Gas Recirculation Sensor B Circuit P0487 Exhaust Gas Recirculation Throttle Control Circuit A Open P0488 Exhaust Gas Recirculation Throttle Control Range/Performance P0489 Exhaust Gas Recirculation Throttle Control Circuit A Low P0490 Exhaust Gas Recirculation Throttle Control Circuit A High P0491 Secondary Air Injection System Insufficient Flow (Bank 1) P0492 Secondary Air Injection System Insufficient Flow (Bank 2) P0493 Fan Overspeed P0494 Fan Speed Low P0495 Fan Speed High P0496 EVAP Flow During Non-Purge P0497 EVAP Low Purge Flow P0498 Evaporative Emission System Vent Valve Control Circuit Low P0499 EVAP Vent Valve Circuit High