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P400 - P499 OBD II Diagnostic Codes

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PO400 - PO499 Numbered Code Identification Chart
 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 (CHRYSLER)
 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

 

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