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Communities > Diagnostics > USA Cars > p0420
p0420

1009 Views 1 Replies Latest reply: 2021-02-13 00:09:34


  •   Level 1   
    (5) points
    MickeyGreen
    2021-02-12 06:42:47
    Shop replaced catalytic converter.I've replaced the sensor's. Engine light comes back on. What is left to check? 2014 Chevy Crude 1.4 turbo

    Tags: 2014 , cruze , p0420

    Reply

  •   Level 10   
    (7578) points
    witsend

    2021-02-13 00:09:34 (Reply to:MickeyGreen)

     PCV failures of Valve cover assembly are common, check Fuel Trims, check Baro, check oil consumption.
    Reply
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