Missing or loose fuel cap. Disconnected EVAP hose. Faulty vent valve. Cracked charcoal canister. Large hose crack or disconnection.

Which cars are affected by P0455?

P0455 is most commonly reported on Ford, Vauxhall, BMW, Nissan, Toyota vehicles, but can appear on any make.

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P0455

Low severity

EVAP System Large Leak Detected

A large leak has been detected in the evaporative emissions system. This is often simpler to diagnose than a small leak and is frequently caused by a missing or loose fuel cap.

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Common causes of P0455

1Missing or loose fuel cap

2Disconnected EVAP hose

3Faulty vent valve

+2 more causes

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Commonly affected vehicles

FordVauxhallBMWNissanToyota

P0455 can appear on any vehicle — these are the makes where it is most frequently reported.

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Related fault codes

P0171Medium

System Too Lean (Bank 1)

P0300High

Random/Multiple Cylinder Misfire Detected

P0420Medium

Catalyst System Efficiency Below Threshold (Bank 1)

P0172Medium

System Too Rich (Bank 1)