» » »

Pontiac Q&A

Ask Your Question

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

 

Question

th3goat, Westwood, NJ, September 14, 2011, 09:51
 Rookie

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

    Angelo2975 September 14, 2011, 10:15
    Profile_thumbnail
     Technician

    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.

    Reply
    Flag This
  • Answer #2

    chinasinoy September 14, 2011, 20:00
    Profile_thumbnail
     Journeyman

    this obd2 trouble code table can help you understand the meaning of code,
    http://www.chinasinoy.com/service/how-to-understand-troub...
    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

    Reply
    Flag This