P0455 Evaporative Emission Control System Leak Detected (gross leak)
Technical Description
Generic: Evaporative Emission Control System Leak Detected (no purge flow or large leak)
Chrysler: EVAP Large Leak Detected Conditions
Ford: EVAP System Leak (No Purge Flow or Large Leak) Conditions
GM (Chevrolet): EVAP System Leak Detected Conditions
Nissan: Evaporative emission (EVAP) canister purge system – gross leak
What does that mean?
This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model.
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.
Related evaporative emission trouble codes include P0450, P0451, P0452, P0453, P0454, P0456, P0457, P0458, and P0459.
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
Other EVAP DTCs: P0440 – P0441 – P0442 – P0443 – P0444 – P0445 – P0446 – P0447 – P0448 – P0449 – P0452 – P0453 – P0456
Need help?
Let us fix your problem. You are most welcome our diagnosis experts have in most cases the knowledge and skills to find the cause of the error code p0455 and to solve the problems.
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"Delete Error Code Permanently, Disable DTC Error Code Function for p0455 in the ECU"
In extreme cases, we even have the option to permanently remove the specific DTC p0455 and disable the function of the specific error code in the ECU. All other fault code functions will then continue to work to protect the engine. This is different from clearing an error code with a diagnostic device. We have the option to permanently remove the function of the specific error code, so that it never comes back. Also emergency running that occurs on the specific error code can be solved in most cases.
Of course we prefer to first try to solve the cause of the error code, but sometimes the only solution is to permanently disable the DTC function of p0455.
