EVAP System OBD-II Codes

20 fault codes in this category. Click any code for detailed causes, diagnostic steps, and repair costs.

P0440 minor

Evaporative Emission Control System Malfunction

P0441 low

Evaporative Emission Control System Incorrect Purge Flow

P0442 minor

Evaporative Emission Control System Leak Detected (Small Leak)

P0443 minor

Evaporative Emission Control System Purge Control Valve Circuit Malfunction

P0444 low

Evaporative Emission Control System Purge Control Valve Circuit Open

P0445 low

Evaporative Emission Control System Purge Control Valve Circuit Shorted

P0446 minor

Evaporative Emission Control System Vent Control Circuit Malfunction

P0447 low

Evaporative Emission Control System Vent Control Circuit Open

P0448 low

Evaporative Emission Control System Vent Control Circuit Shorted

P0449 minor

Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

P0450 low

Evaporative Emission Control System Pressure Sensor Malfunction

P0451 low

Evaporative Emission Control System Pressure Sensor Range/Performance

P0452 low

Evaporative Emission Control System Pressure Sensor Low Input

P0453 low

Evaporative Emission Control System Pressure Sensor High Input

P0454 low

Evaporative Emission Control System Pressure Sensor Intermittent

P0455 moderate

Evaporative Emission Control System Leak Detected (Large Leak)

P0456 minor

Evaporative Emission Control System Leak Detected (Very Small Leak)

P0457 minor

Evaporative Emission Control System Leak Detected (Fuel Cap Loose/Off)

P0458 low

Evaporative Emission Control System Purge Control Valve Circuit Low

P0459 low

Evaporative Emission Control System Purge Control Valve Circuit High

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