code 455 and 496. I have changed the gas cap.
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Answer #1chinasinoy July 29, 2011, 19:05Journeyman
for p0455, you can try this:
Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, and/or
Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary