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1997 Saturn SW2 Question: codes p0401 and p0420 what else can i change to make this work

 

Question

cain, Victorville, CA, December 19, 2011, 12:58
 Rookie

what are the codes i have change these parts already still getting this codes

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  • Answer #1

    euromech December 19, 2011, 13:28
     Journeyman

    Most likely those parts shuld not to be replaced at first place as i said below.

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  • Answer #2

    Greg's Orange Auto (13179 Answers) , Orange, CA - (714) 361-9386
    globalhelper December 19, 2011, 13:30
     Master

    YOUR EGR SYSTEM HAS SERVERAL PARTS TO IT, WHAT PARTS HAVE YOU ALREADY CHANGED.ALSO YOUR PO420 CODE PERTAINS TO CATT EFF. BELOW THRESHOLD WHAT HAVE YOU CHANGED THERE

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  • Answer #3

    mastertech6371 December 19, 2011, 17:04
    Profile_thumbnail
     Master

    401 is an egr code that may be a clogged passage rather than a bad egr valve. stop throwing parts at it and have it cheked correctly.

    420 is a bad cat. it must be replaced.

    Roy

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