» » »

Pontiac Q&A

Ask Your Question

2004 Pontiac GTO Question: The car is pulling obd code p0455 and p0455pd



th3goat, Westwood, NJ, September 14, 2011, 12:51

This only happens when the I drive the car, park it for 5mins jump back in and start it up. I have replaced the gas cap and its still pulling the codes

2 Answers
Flag This
  • Answer #1

    September 14, 2011, 13:15

    P0455 EVAP LARGE LEAK DETECTED, eVAP SYSTEM IS UNABLE TO ACHIEVE VACCUM DURING DIAGNOSTIC MODE. You might want to take it to a shop for them to perfom Evap performance test.

    Flag This
  • Answer #2

    September 14, 2011, 23:00

    this obd2 trouble code table can help you understand the meaning of code,
    and for this code, I think 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

    Flag This