Question about 2007 Chevrolet Uplander
I had a sensor behind my gas tank that was stuck open. i am not sure what they call it, but once it was replaced, my light went off.
Posted on Nov 08, 2012
You can reset it with a code reader. However, the light will go out on its own after you fix the fault. It may take many start stop cycles. The computer will run tests to determine the cap is holding pressure. When it is satisfied that the problem is fixed it will turn off the light. Be patient. This will only happen if you replaced with the correct gas cap.
Posted on Sep 08, 2010
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Posted on Jan 02, 2017
SOURCE: Check engine light came on
Hi, if the code was P0455, there are other possible reasons. The computer fuel tank pressure sensor has detected a leak which could also be in the vapor canister, or the hose from the canister to the purge valve, or the purge valve itself may be leaking. Please inspect the system for these leaks. I may be able to provide some pics of these parts if you tell me your model, year, and engine info. 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.
Symptoms You likely won't notice any drivability problems.
Causes A code p0455 most likely means one or more of the following has happened:
Evaporative Emission Control System Leak Detected (no purge flow
or large leak)
Posted on May 15, 2011
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