P0455: Evaporative Emission Control System Leak Detected (Large Leak)

A large leak in the fuel vapor system has been detected.

Low Severity

$10 – $500

Typical repair cost range

Can I Keep Driving with Code P0455?

Yes, the car runs fine. You may smell fuel near the tank.

P0455 means a leak roughly the size of a 0.080 inch hole or larger. A loose or missing gas cap is the most common cause.

Check the gas cap first, it is the most likely fix.
If you can smell fuel, look for a fallen hose or disconnected line in the engine bay or under the car.

Get an AI estimate for the most likely repair on your exact car, in under a minute.

Can I drive with P0455?

Yes. The car will not get damaged, you will just fail emissions and possibly smell fuel.