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P0455 OBD-II Trouble Code

Technical Description

Evaporative Emission Control System Leak Detected (no purge flow or large leak)

What does that mean?

This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Symptoms

You likely won't notice any drivability problems.

Causes

A code p0455 most likely means one or more of the following has happened:

Possible Solutions

With a p0455, the most common repair is to:

Sources: B. Longo

Need more help?

If you still need help regarding this trouble code, please post your concern in the forums.

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