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  1. 06-07-2006, 06:28 PM #1
    doubletimebluz
    doubletimebluz is offline
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    Arctic White
    2001 SS Camaro

    service engine soon part II

    Took the SS to Autozone and the code showing is PO420. Any ideas as to what this code is?
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  2. 06-07-2006, 07:41 PM #2
    99blueZ
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    www.gearchatter.com
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  3. 06-07-2006, 10:19 PM #3
    SeVeReDiStOrTiOn
    SeVeReDiStOrTiOn is offline
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    05 Wrangler
    00 Z28 sold :-(

    Driverside cat....it's covered under federal emissions for 8yrs/80,000mi. Might wanna swap your rear o2 sensors to make sure it's not a bad sensor...it's more then likely a bad cat, I had the same code and it was the cat
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