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Catalyst insufficient code??

This is a discussion on Catalyst insufficient code?? within the Computer & Tuning forums, part of the LSx Technical Help Section category; Has anyone ever heard of this? if so what does it mean....

  1. #1
    Junior Member jc99ls1ss's Avatar
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    Bright Red
    1999 Camaro SS

    Catalyst insufficient code??

    Has anyone ever heard of this? if so what does it mean.

  2. #2
    Junior Member Khaotic's Avatar
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    Red
    2000 SS Camaro

    Exhasut leak maybe

    The catalyst monitor d-agnostic and is sensitive to several conditions,
    -exhaust leake
    -HO2s contamination
    -alternative fuels
    In the exhasut system leaks may cause the following
    -prevent a degraded catalyst from failing the diagnostic also a failure for a normally functioning catalyst and prevent the diagnostic from running.

    But somewhere in the exhaust is causing the diagnostic from running that would be my quess. That may be what you are seeing

  3. #3
    cutting and welding mark21742's Avatar
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    hugger orange
    2004

    do you have hi flow cats or no cats? that would cause it

  4. #4
    Veteran 0rion's Avatar
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    98 Formula
    06 duramax

    I'm guessing it's a p0420 or p0430 code? Could just simply be you have a bad cat.

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