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Through code P0440

This is a discussion on Through code P0440 within the General Help forums, part of the LSx Technical Help Section category; P0440 Evaporative Emission (EVAP) System. Is this the evap purge solenoid??...

  1. #1
    I flame retards CamaroFan71's Avatar
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    QuickSilverMetallic
    2005 GTO M6

    Through code P0440

    P0440 Evaporative Emission (EVAP) System. Is this the evap purge solenoid??

  2. #2
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    You can look up the diagnostics for your year at gearchatter.com, but the first thing to check is for a missing/loose/defective gas cap.

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    I flame retards CamaroFan71's Avatar
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    QuickSilverMetallic
    2005 GTO M6

    I'll do that man thanks. I'll get a new gas cap anyway. Mine looks a little worn and its probably cheaper than the other part would be.

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    My girlfriends Cavalier keep throwing that code, kept clearing it. New gas cap has kept it off and the o ring didn't look that bad.

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    Veteran 0rion's Avatar
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    weren't you having trouble getting the car to fill up with gas? Might have found your problem.

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    I flame retards CamaroFan71's Avatar
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    Quote Originally Posted by 0rion View Post
    weren't you having trouble getting the car to fill up with gas? Might have found your problem.
    Yeah I was. Thats why I was wondering if it was that solenoid you mentioned.

  7. #7
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    Quote Originally Posted by 2001NBMZ28 View Post
    My girlfriends Cavalier keep throwing that code, kept clearing it. New gas cap has kept it off and the o ring didn't look that bad.
    Same with my sister's Cav. I keep clearing it and making sure no other codes have came up. I'll get to the gas cap one day...when my give a damn catches up.

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