Question about 2004 Chevrolet Cavalier
Received P0455 Evap System Large Leak Detected for my 2004 Chevy Cavalier. It is not the gas cap. Where else can I look to fix the problem?
Your problem is probably a vacuum hose that goes from the purge valve to the gas tank (crack or broken hose). There should be two of these check both. A broken vacuum line will make the purge valve make a clicking noise that can be mistaken for noisy engine valves.
Posted on Apr 28, 2010
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Posted on Jan 02, 2017
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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.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook SymptomsYou likely won't notice any drivability problems.
CausesA code p0455 most likely means one or more of the following has happened:
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