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