PO420 code - Page 3
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Thread: PO420 code

  1. #21
    Big Timer!!! 9thgensifamily's Avatar
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    175k is a pretty good run for a cat in my opinion. The cheat code for cat problems is a O2 defouler.

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  3. #22
    Nooblets
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    Jun 2019
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    Quote Originally Posted by Killmonr View Post
    Now at 175k the code came back
    Too bad you got such bad advice earlier. A cat code is a bad cat %99 of the time. It can easily be diagnosed via a scan tool.

    In my experience(22 year ASE Master Technicinan w/ L1) 100k is the norm for the cats on most Asian vehicles built with in the last 15-20 years. Yeah there are many that will last longer,but on average 100k seems to be the turning point.

    Install a Honda or CARB approved cat and be done with it.(If the cat isnt Honda factory or CARB approved,the light will come back on with-in 3 months to a year. Sometimes sooner)
    Last edited by DCFIVER; 09-17-2019 at 11:44 AM.
    Teeps likes this.

  4. #23
    Big Timer!!! Killmonr's Avatar
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    Jul 2018
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    Ok i feel yah i guess i will have to go buy a cat from dealership. Thank you for your expertise.

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