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p0402

  1. need help cel code P0402......

    General Technical Chat
    I need to smog check my car next month so i need help figuring this out. the description says (EGR exesive gas flow). i previusly had my pcv hose colaps i took my car to a mechanic and told me he could fav a hose for me. he did and work for about a week then i got this code. i just replace it...
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