Question about 1999 Pontiac Grand Prix
If the fuel system isnt sealed or has a leak the check eng light will come on, so lets say they forgot to connect a line from tank to evap canister this would cause check engine light to come on, this happens no big thing as long as they repaired it at no charge. and the answer to your question is yes it can be because they didnt do the job correctly.
Posted on Aug 20, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
P0443 The fuel vapor canister reduces that gas smell on hot days outside/inside of car. The fuel vapor canister fillers bad smells from gas tank on hot days when the gas expands and burps fumes through carbon canister filter. From the canister (gas vapor fumes) goes back into the engine to be burned again...it's a closed loop for vapors to be recycled though engine. Don't worry, once the carbon canister dries out and no longer flooded with raw fuel the code should go away...just don't let the top off fuel tank back flow into the 'Evap emission control' carbon filter near the top and close to the gas cap...:)
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EVAP System Small Leak Detected
EVAP fuel tank or canister vapor hoses leaking or damagedEVAP system component leaking, damaged or has failedFuel tank cap is loose, or the cap release pressure is incorrectLeak detection pump damaged or leaking.Also check the fuel filter for leaks.Does canister have filter on bottom?
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