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P0400-P0499 – Auxiliary Emissions Controls

  • 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 Exhaust Gas Recirculation Sensor A Circuit Low
  • P0406 Exhaust Gas Recirculation 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 “A” Circuit
  • P040A Exhaust Gas Recirculation Temperature Sensor “A” Circuit
  • P040B Exhaust Gas Recirculation Temperature Sensor “A” Circuit Range/Performance
  • P040C Exhaust Gas Recirculation Temperature Sensor “A” Circuit Low
  • P040D Exhaust Gas Recirculation Temperature Sensor “A” Circuit High
  • P040E Exhaust Gas Recirculation Temperature Sensor “A” Circuit Intermittent/Erratic
  • P040F Exhaust Gas Recirculation Temperature Sensor “A”/”B” Correlation
  • P0410 Secondary Air Injection System Malfunction
  • P0411 Secondary Air Injection System Incorrect Flow Detected
  • 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
  • P041A Exhaust Gas Recirculation Temperature Sensor “B” Circuit
  • P041B Exhaust Gas Recirculation Temperature Sensor “B” Circuit Range/Performance
  • P041C Exhaust Gas Recirculation Temperature Sensor “B” Circuit Low
  • P041D Exhaust Gas Recirculation Temperature Sensor “B” Circuit High
  • P041E Exhaust Gas Recirculation Temperature Sensor “B” Circuit Intermittent/Erratic
  • P041F Secondary Air Injection System Switching Valve “A” Circuit Low
  • 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 (Bank 1, Sensor 1)
  • P0426 Catalyst Temperature Sensor Range/Performance (Bank 1, Sensor 1)
  • P0427 Catalyst Temperature Sensor Low (Bank 1, Sensor 1)
  • P0428 Catalyst Temperature Sensor High (Bank 1, Sensor 1)
  • P0429 Catalyst Heater Control Circuit (Bank 1)
  • P042A Catalyst Temperature Sensor Circuit (Bank 1 Sensor 2)
  • P042B Catalyst Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 2)
  • P042C Catalyst Temperature Sensor Circuit Low (Bank 1 Sensor 2)
  • P042D Catalyst Temperature Sensor Circuit High (Bank 1 Sensor 2)
  • P042E Exhaust Gas Recirculation “A” Control Stuck Open
  • P042F Exhaust Gas Recirculation “A” Control Stuck Closed
  • 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 Malfunction (Bank 2, Sensor 1)
  • P0436 Catalyst Temperature Sensor Circuit Range/Performance (Bank 2, Sensor 1)
  • P0437 Catalyst Temperature Sensor Circuit Low (Bank 2, Sensor 1)
  • P0438 Catalyst Temperature Sensor Circuit High (Bank 2, Sensor 1)
  • P0439 Catalyst Heater Control Circuit (Bank 2)
  • P043A Catalyst Temperature Sensor Circuit (Bank 2 Sensor 2)
  • P043B Catalyst Temperature Sensor Circuit Range/Performance Bank 2 Sensor 2)
  • 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
  • P045A Exhaust Gas Recirculation “B” Control Circuit
  • P045B Exhaust Gas Recirculation “B” Control Circuit Range/Performance
  • P045C Exhaust Gas Recirculation “B” Control Circuit Low
  • P045D Exhaust Gas Recirculation “B” Control Circuit High
  • P045E Exhaust Gas Recirculation “B” Control Stuck Open
  • P045F Exhaust Gas Recirculation “B” Control Stuck Closed
  • 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 Circuit Malfunction
  • P0466 Purge Flow Sensor Circuit Range/Performance
  • P0467 Purge Flow Sensor Circuit Low Input
  • P0468 Purge Flow Sensor Circuit High Input
  • P0469 Purge Flow Sensor Circuit Intermittent
  • P046A Catalyst Temperature Sensor 1/2 Correlation (Bank 1)
  • P046B Catalyst Temperature Sensor 1/2 Correlation (Bank 2)
  • P046C Exhaust Gas Recirculation Sensor “A” Circuit Range/Performance
  • P046D Exhaust Gas Recirculation Sensor “A” Circuit Intermittent/Erratic
  • P046E Exhaust Gas Recirculation Sensor “B” Circuit Range/Performance
  • P046F Exhaust Gas Recirculation Sensor “B” Circuit Intermittent/Erratic
  • P0470 Exhaust Pressure Sensor “A” Circuit
  • P0471 Exhaust Pressure Sensor “A” Circuit Range/Performance
  • P0472 Exhaust Pressure Sensor “A” Circuit Low
  • P0473 Exhaust Pressure Sensor “A” Circuit High
  • P0474 Exhaust Pressure Sensor “A” Circuit Intermittent
  • P0475 Exhaust Pressure Control Valve “A”
  • P0476 Exhaust Pressure Control Valve “A” Range/Performance
  • P0477 Exhaust Pressure Control Valve “A” Low
  • P0478 Exhaust Pressure Control Valve “A” High
  • P0479 Exhaust Pressure Control Valve “A” Intermittent
  • P047A Exhaust Pressure Sensor “B” Circuit
  • P047B Exhaust Pressure Sensor “B” Circuit Range/Performance
  • P047C Exhaust Pressure Sensor “B” Circuit Low
  • P047D Exhaust Pressure Sensor “B” Circuit High
  • P047E Exhaust Pressure Sensor “B” Circuit Intermittent/Erratic
  • P047F Exhaust Pressure Control Valve “A” Stuck Open
  • P0480 Cooling Fan I Control Circuit Malfunction
  • P0481 Cooling Fan 2 Control Circuit Malfunction
  • P0482 Cooling Fan 3 Control Circuit Malfunction
  • 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 Circuit “A” Range/Performance
  • P0489 Exhaust Gas Recirculation “A” Control Circuit Low
  • P048A Exhaust Pressure Control Valve “A” Stuck Closed
  • P048B Exhaust Pressure Control Valve Position Sensor/Switch Circuit
  • P048C Exhaust Pressure Control Valve Position Sensor/Switch Circuit Range/Performance
  • P048D Exhaust Pressure Control Valve Position Sensor/Switch Circuit Low
  • P048E Exhaust Pressure Control Valve Position Sensor/Switch Circuit High
  • P048F Exhaust Pressure Control Valve Position Sensor/Switch Circuit Intermittent/Erratic
  • P0490 Exhaust Gas Recirculation “A” Control Circuit 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 A Non-Purge Condition
  • P0497 Evaporative Emission System Low Purge Flow
  • P0498 Evaporative Emission System Vent Valve Control Circuit Low
  • P0499 Evaporative Emission System Vent Valve Control Circuit High