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P0400/P0499 OBD-II TROUBLE CODES
EGR System - P400 through P0409 and P0470 through P0479 trouble codes indicate exhaust gas recirculation faults.

AIS System - P0410 through P0419 trouble codes indicate problems with the air injection system.

EVAP System - P0440 through P0469 trouble codes indicate evaporative system problems.

CAT System - P0420 through P0439 trouble codes may indicate a defective catalytic converter.

Bank 1 and Bank 2 describe the location of the component in reference to the left or right side of the engine. Bank 1 is whichever side cylinder number 1 is located. It could be the left side (driver side) or right. Bank 2 is the other side.

Recent P0400 - P0499 Questions:

2000 Nissan Maxima - Does it Need All These Smog Repairs?

BMW Trouble Code P0491 Secondary Air Injection Problem

2000 Infiniti I30 Trouble Code P0430 and Service Engine Soon Light is On

2002 Honda Civic P0420 Catalyst System Efficiency Below Threshold

2000 Infiniti I30 trouble code OBDII P0430 service engine soon light is on

2001 Subaru Outback Limited needs a Catalytic Converter Trouble Code P0420

Dodge Stratus Check Engine Light ON Trouble Code P0491.

Hyundai Accent trouble code P0441. Check engine light is on.

1999 Ford Explorer - How do I clear the p0442 and reset the check engine light?

2004 Mitsubishi Galant - Trouble Code P0431 and P0432.

2001 Nissan Frontier Pick Up Trouble Code P0420

Chevy Silverado 2001 failed smog test trouble code p0449 OBD II. How to fix it?

Trouble Code P0400....Exhaust Gas Recirculation Flow

Trouble Code P0401....Exhaust Gas Recirculation Flow Insufficient Detected

Trouble Code P0402....Exhaust Gas Recirculation Flow Excessive Detected

Trouble Code P0403....Exhaust Gas Recirculation Control Circuit

Trouble Code P0404....Exhaust Gas Recirculation Control Circuit Range/Performance

Trouble Code P0405....Exhaust Gas Recirculation Sensor 'A' Circuit Low

Trouble Code P0406....Exhaust Gas Recirculation Sensor 'A' Circuit High

Trouble Code P0407....Exhaust Gas Recirculation Sensor 'B' Circuit Low

Trouble Code P0408....Exhaust Gas Recirculation Sensor 'B' Circuit High

Trouble Code P0409....Exhaust Gas Recirculation Sensor 'A' Circuit

Trouble Code P0410....Secondary Air Injection System

Trouble Code P0411....Secondary Air Injection System Incorrect Flow Detected

Trouble Code P0412....Secondary Air Injection System Switching Valve 'A' Circuit

Trouble Code P0413....Secondary Air Injection System Switching Valve 'A' Circuit Open

Trouble Code P0414....Secondary Air Injection System Switching Valve 'A' Circuit Shorted

Trouble Code P0415....Secondary Air Injection System Switching Valve 'B' Circuit

Trouble Code P0416....secondary Air Injection System Switching Valve 'B' Circuit Open

Trouble Code P0417....secondary Air Injection System Switching Valve 'B' Circuit Shorted

Trouble Code P0416....Secondary Air Injection System Relay 'A' Circuit

Trouble Code P0419....Secondary Air injection System Relay 'B' Circuit

Trouble Code P0420....Catalyst System Efficiency Below Threshold (Bank 1)

Trouble Code P0421....Warm Up Catalyst Efficiency Below Threshold (Bank 1)

Trouble Code P0422....Main Catalyst Efficiency Below Threshold (Bank 1)

Trouble Code P0423....Heated Catalyst Efficiency Below Threshold (Bank 1)

Trouble Code P0424....Heated Catalyst Temperature Below Threshold (Bank 1)

Trouble Code P0425....Catalyst Temperature Sensor (Bank 1)

Trouble Code P0426....Catalyst Temperature Sensor Range/Performance (Bank 1)

Trouble Code P0427....Catalyst Temperature Sensor Low Input (Bank 1)

Trouble Code P0428....Catalyst Temperature Sensor High Input (Bank 1)

Trouble Code P0429....Catalyst Heater Control Circuit (Bank 1)

Trouble Code P0430....Catalyst System Efficiency Below Threshold (Bank 2)

Trouble Code P0431....Warm Up Catalyst Efficiency Below Threshold (Bank 2)

Trouble Code P0432....Main Catalyst Efficiency Below Threshold (Bank 2)

Trouble Code P0433....Heated Catalyst Efficiency Below Threshold (Bank 2)

Trouble Code P0434....Heated Catalyst Temperature Below Threshold (Bank 2)

Trouble Code P0435....Catalyst Temperature Sensor (Bank 2)

Trouble Code P0436....Catalyst Temperature Sensor Range/Performance (Bank 2)

Trouble Code P0437....Catalyst Temperature Sensor Low Input (Bank 2)

Trouble Code P0438....Catalyst Temperature Sensor High Input (Bank 2)

Trouble Code P0439....Catalyst Heater Control Circuit (Bank 2)

Trouble Code P0440....Evaporative Emission Control System

Trouble Code P0441....Evaporative Emission Control System Incorrect Purge Flow

Trouble Code P0442....Evaporative Emission Control System Leak Detected (small leak)

Trouble Code P0443....Evaporative Emission Control System Purge Control Valve Circuit

Trouble Code P0444....Evaporative Emission Control System Purge Control Valve Circuit Open

Trouble Code P0445....Evaporative Emission Control System Purge Control Valve Circuit Shorted

Trouble Code P0446....Evaporative Emission Control System Vent Control Circuit

Trouble Code P0447....Evaporative Emission Control System Vent Control Circuit Open

Trouble Code P0448....Evaporative Emission Control System Vent Control Circuit Shorted

Trouble Code P0449....Evaporative Emission Control System Vent Valve/Solenoid Circuit

Trouble Code P0450....Evaporative Emission Control System Pressure Sensor

Trouble Code P0451....Evaporative Emission Control System Pressure Sensor Range/Performance

Trouble Code P0452....Evaporative Emission Control System Pressure Sensor Low Input

Trouble Code P0453....Evaporative Emission Control System Pressure Sensor High input

Trouble Code P0454....Evaporative Emission Control System Pressure Sensor Intermittent

Trouble Code P0455....Evaporative Emission Control System Leak Detected (gross leak)

Trouble Code P0456....Evaporative Emission Control System Leak Detected (very small leak)

Trouble Code P0457....Evaporative Emission Control System Leak Detected (fuel cap loose/off)

Trouble Code P0460....Fuel Level Sensor Circuit

Trouble Code P0461....Fuel Level Sensor Circuit Range/Performance

Trouble Code P0462....Fuel Level Sensor Circuit Low Input

Trouble Code P0463....Fuel Level Sensor Circuit High Input

Trouble Code P0464....Fuel Level Sensor Circuit Intermittent

Trouble Code P0465....EVAP Purge Flow Sensor Circuit

Trouble Code P0466....EVAP Purge Flow Sensor Circuit Range/Performance

Trouble Code P0467....EVAP Purge Flow Sensor Circuit Low Input

Trouble Code P0468....EVAP Purge Flow Sensor Circuit High Input

Trouble Code P0469....EVAP Purge Flow Sensor Circuit Intermittent

Trouble Code P0470....Exhaust Pressure Sensor

Trouble Code P0471....Exhaust Pressure Sensor Range/Performance

Trouble Code P0472....Exhaust Pressure Sensor Low

Trouble Code P0473....Exhaust Pressure Sensor High

Trouble Code P0474....Exhaust Pressure Sensor Intermittent

Trouble Code P0475....Exhaust Pressure Control Valve

Trouble Code P0476....Exhaust Pressure Control Valve Range/Performance

Trouble Code P0477....Exhaust Pressure Control Valve Low

Trouble Code P0478....Exhaust Pressure Control Valve High

Trouble Code P0479....Exhaust Pressure Control Valve Intermittent

Trouble Code P0480....Cooling Fan 1 Control Circuit

Trouble Code P0481....Cooling Fan 2 Control Circuit

Trouble Code P0482....Cooling Fan 3 Control Circuit

Trouble Code P0483....Cooling Fan Rationality Check

Trouble Code P0484....Cooling Fan Circuit Over Current

Trouble Code P0485....Cooling Fan Power/Ground Circuit

Trouble Code P0486....Exhaust Gas Recirculation Sensor 'B' Circuit

Trouble Code P0487....Exhaust Gas Recirculation Throttle Position Control Circuit

Trouble Code P0488....Exhaust Gas Recirculation Throttle Position Control Range/Performance

Trouble Code P0491....Secondary Air Injection System (Bank 1)

Trouble Code P0492....Secondary Air Injection System (Bank 2)

Miles:
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