P04xx
Auxiliary emission controls
Systems that treat or recirculate exhaust gases: EGR, catalytic converters, evaporative emission control, secondary air injection and diesel particulate filters.
- P0400Exhaust Gas Recirculation Flow
- P0401Exhaust Gas Recirculation Flow Insufficient Detected
- P0402Exhaust Gas Recirculation Flow Excessive Detected
- P0403Exhaust Gas Recirculation Control Circuit
- P0404Exhaust Gas Recirculation Control Circuit Range/Performance
- P0405Exhaust Gas Recirculation Sensor "A" Circuit Low
- P0406Exhaust Gas Recirculation Sensor "A" Circuit High
- P0407Exhaust Gas Recirculation Sensor "B" Circuit Low
- P0408Exhaust Gas Recirculation Sensor "B" Circuit High
- P0409Exhaust Gas Recirculation Sensor "A" Circuit
- P0410Secondary Air Injection System
- P0411Secondary Air Injection System Incorrect Flow Detected
- P0412Secondary Air Injection System Switching Valve "A" Circuit
- P0413Secondary Air Injection System Switching Valve "A" Circuit Open
- P0414Secondary Air Injection System Switching Valve "A" Circuit Shorted
- P0415Secondary Air Injection System Switching Valve "B" Circuit
- P0416Secondary Air Injection System Switching Valve "B" Circuit Open
- P0417Secondary Air Injection System Switching Valve "B" Circuit Shorted
- P0418Secondary Air Injection System Control "A" Circuit
- P0419Secondary Air Injection System Control "B" Circuit
- P0420Catalyst System Efficiency Below Threshold (Bank 1)
- P0421Warm Up Catalyst Efficiency Below Threshold (Bank 1)
- P0422Main Catalyst Efficiency Below Threshold (Bank 1)
- P0423Heated Catalyst Efficiency Below Threshold (Bank 1)
- P0424Heated Catalyst Temperature Below Threshold (Bank 1)
- P0425Catalyst Temperature Sensor (Bank 1)
- P0426Catalyst Temperature Sensor Range/Performance (Bank 1)
- P0427Catalyst Temperature Sensor Low (Bank 1)
- P0428Catalyst Temperature Sensor High (Bank 1)
- P0429Catalyst Heater Control Circuit (Bank 1)
- P0430Catalyst System Efficiency Below Threshold (Bank 2)
- P0431Warm Up Catalyst Efficiency Below Threshold (Bank 2)
- P0432Main Catalyst Efficiency Below Threshold (Bank 2)
- P0433Heated Catalyst Efficiency Below Threshold (Bank 2)
- P0434Heated Catalyst Temperature Below Threshold (Bank 2)
- P0435Catalyst Temperature Sensor (Bank 2)
- P0436Catalyst Temperature Sensor Range/Performance (Bank 2)
- P0437Catalyst Temperature Sensor Low (Bank 2)
- P0438Catalyst Temperature Sensor High (Bank 2)
- P0439Catalyst Heater Control Circuit (Bank 2)
- P0440Evaporative Emission System
- P0441Evaporative Emission System Incorrect Purge Flow
- P0442Evaporative Emission System Leak Detected (small leak)
- P0443Evaporative Emission System Purge Control Valve Circuit
- P0444Evaporative Emission System Purge Control Valve Circuit Open
- P0445Evaporative Emission System Purge Control Valve Circuit Shorted
- P0446Evaporative Emission System Vent Control Circuit
- P0447Evaporative Emission System Vent Control Circuit Open
- P0448Evaporative Emission System Vent Control Circuit Shorted
- P0449Evaporative Emission System Vent Valve/Solenoid Circuit
- P0450Evaporative Emission System Pressure Sensor/Switch
- P0451Evaporative Emission System Pressure Sensor/Switch Range/Performance
- P0452Evaporative Emission System Pressure Sensor/Switch Low
- P0453Evaporative Emission System Pressure Sensor/Switch High
- P0454Evaporative Emission System Pressure Sensor/Switch Intermittent
- P0455Evaporative Emission System Leak Detected (large leak)
- P0456Evaporative Emission System Leak Detected (very small leak)
- P0457Evaporative Emission System Leak Detected (fuel cap loose/off)
- P0458Evaporative Emission System Purge Control Valve Circuit Low
- P0459Evaporative Emission System Purge Control Valve Circuit High
- P0460Fuel Level Sensor "A" Circuit
- P0461Fuel Level Sensor "A" Circuit Range/Performance
- P0462Fuel Level Sensor "A" Circuit Low
- P0463Fuel Level Sensor "A" Circuit High
- P0464Fuel Level Sensor "A" Circuit Intermittent
- P0465EVAP Purge Flow Sensor Circuit
- P0466EVAP Purge Flow Sensor Circuit Range/Performance
- P0467EVAP Purge Flow Sensor Circuit Low
- P0468EVAP Purge Flow Sensor Circuit High
- P0469EVAP Purge Flow Sensor Circuit Intermittent
- P0470Exhaust Pressure Sensor
- P0471Exhaust Pressure Sensor Range/Performance
- P0472Exhaust Pressure Sensor Low
- P0473Exhaust Pressure Sensor High
- P0474Exhaust Pressure Sensor Intermittent
- P0475Exhaust Pressure Control Valve
- P0476Exhaust Pressure Control Valve Range/Performance
- P0477Exhaust Pressure Control Valve Low
- P0478Exhaust Pressure Control Valve High
- P0479Exhaust Pressure Control Valve Intermittent
- P0480Fan 1 Control Circuit
- P0481Fan 2 Control Circuit
- P0482Fan 3 Control Circuit
- P0483Fan Rationality Check
- P0484Fan Circuit Over Current
- P0485Fan Power/Ground Circuit
- P0486Exhaust Gas Recirculation Sensor "B" Circuit
- P0487Exhaust Gas Recirculation Throttle Position Control Circuit
- P0488Exhaust Gas Recirculation Throttle Position Control Range/Performance
- P0489Exhaust Gas Recirculation Control Circuit Low
- P0490Exhaust Gas Recirculation Control Circuit High
- P0491Secondary Air Injection System Insufficient Flow (Bank 1)
- P0492Secondary Air Injection System Insufficient Flow (Bank 2)
- P0493Fan Overspeed
- P0494Fan Speed Low
- P0495Fan Speed High
- P0496Evaporative Emission System High Purge Flow
- P0497Evaporative Emission System Low Purge Flow
- P0498Evaporative Emission System Vent Valve Control Circuit Low
- P0499Evaporative Emission System Vent Valve Control Circuit High
Read this code from your own car
Plug an ELM327 adapter into the OBD-II port under the dashboard. Pin16 reads every stored, pending and permanent code, explains each one like this page does — offline, with no account — and shows what the car recorded when the fault was set.