Mechanics

Trouble Code Definitions

OBD2 Diagnostic Trouble Code Tables 1995 - 2008

  • 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
  • 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
  • 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)
  • 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)
  • 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 Malfunction
  • 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
  • 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 - EVAP Leak Monitor Small Leak Detected
  • 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
  • P0470 - Exhaust Pressure Sensor Malfunction
  • P0471 - Exhaust Pressure Sensor Range/Performance
  • P0472 - Exhaust Pressure Sensor Low
  • P0473 - Exhaust Pressure Sensor High
  • P0474 - Exhaust Pressure Sensor Intermittent
  • P0475 - Exhaust Pressure Control Valve Malfunction
  • P0476 - Exhaust Pressure Control Valve Range/Performance
  • P0477 - Exhaust Pressure Control Valve Low
  • P0478 - Exhaust Pressure Control Valve High
  • P0479 - Exhaust Pressure Control Valve Intermittent
  • P0480 - Cooling Fan 1 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