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Thread: Fault code PO420

  
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    Fault code PO420

    Hello guys keep getting the eml light well now and then and it refers to catylic converter bank 1

    Im pritty sure its because i have no cats is this correct?

    Really weird as in 2000 miles never once come on and in the last 700miles It has come on 3times??

    Its not a problem as i just turn it off at work but a little intrested cheers

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    GB's Avatar
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    0420 referrs to main cat

    so if youve decatted the main one thats the reason

    i used to get this code now n again even tho i have a sports cat but it stopped triggering after i did the earth mod amongst other things

    your best bet is probably to pack out the rear o2 sensor with a few washers or make up a little threaded spacer so the sensor sits out further and detects less gases

    ok its not strictly legal as it'll struggle to pass an mot but youve already bypassed this rule by fitting a decat so just space out the o2 and u should be fine

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    Lol its already spaced out its not really a problem il live with it lol

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