Technical Description
Generic: The system has detected a leak in the evaporative emission control system, specifically a lack of purge flow or a large leak.
Chrysler: Conditions for detecting a large leak in the EVAP system.
Ford: Conditions for detecting a leak in the EVAP system, specifically a lack of purge flow or a large leak.
GM (Chevrolet): Conditions for detecting a leak in the EVAP system.
Nissan: The system has detected a gross leak in the evaporative emission (EVAP) canister purge system.
What does that mean?
This diagnostic trouble code (DTC) is a generic powertrain code that applies to OBD-II equipped vehicles. The specific repair steps may vary depending on the make and model of the vehicle.
This code indicates a fuel vapor leak or a lack of purge flow in the EVAP control system. It signifies that a large leak has been detected.
The EVAP emission control system prevents fuel vapors from escaping the vehicle’s fuel system. Fuel vapors are directed through hoses to a charcoal canister for storage. When the engine is running, a purge control valve opens to allow intake vacuum to draw the fuel vapors into the engine.
Other related trouble codes for evaporative emissions include P0450, P0451, P0452, P0453, P0454, P0456, P0457, P0458, and P0459.
Symptoms
You are unlikely to notice any drivability issues.
Causes
A code p0455 most likely indicates one or more of the following:
Possible Solutions
The most common repair for a p0455 code is to:
Sources: B. Longo
Other EVAP DTCs: P0440 – P0441 – P0442 – P0443 – P0444 – P0445 – P0446 – P0447 – P0448 – P0449 – P0452 – P0453 – P0456
