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    enelson6's Avatar
    enelson6 Posts: 1, Reputation: 1
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    #1

    Mar 4, 2010, 07:10 PM
    Diagnostic code p1456 on 2002 honda odyssey
    I have rec'd a diagnostic code of p1456.. can anyone tell me what that stands for?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Mar 4, 2010, 07:12 PM

    P1456--EVAP Emission Control System Leak Detected (Fuel Tank System)

    Make sure your gas cap is on all the way--tighten it three clicks. If you tighten the cap, the Check Engine Light should go out on its own within 20 miles or so. Otherwise, use a code reader to clear the code.
    skidoo9's Avatar
    skidoo9 Posts: 11, Reputation: 1
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    #3

    Mar 5, 2010, 03:13 PM

    Sometimes rust or dirt can build up around the area where your gas cap seals to the gas neck or on the cap itself. Make sure you have a good clean seal. If not you may have replace the gas cap.
    blurrygurl's Avatar
    blurrygurl Posts: 1, Reputation: 1
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    #4

    May 20, 2010, 01:16 PM
    I've replaced the gas cap, because last time I went to AutoZone, with a different code, they said it was the evap/gas cap and I bought a new one and it went off... NOW... it's this P1456 and AZone said it's NOT the evap, but Honda will try to charge me $800/$900 to fix what they WON'T tell me is broken! Can someone tell me what the real P1456 is? Please??
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