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SES Light. PO157

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SES Light. PO157

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Oct 25, 2011 | 03:28 PM

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TECH Junkie

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SES Light. PO157

Had an SES light on for awhile after the headers were installed. Figured it was because they are race headers without AIR. After scanning the car I got code PO157 which is oxygen sensor related. Do I need to get AIR tuned out of the computer after a header install or should I just take a look at the oxygen sensor? Car is due for emissions in a month and Im trying to get it sorted out. Thanks in advance..

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Oct 27, 2011 | 12:49 PM

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TECH Junkie

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Anyone?

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Nov 2, 2011 | 02:12 PM

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TECH Junkie

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up top. Do the front 02s on our cars do all of the work? Would it be a problem if I had the rears tuned out even though I have cats?

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Nov 2, 2011 | 02:53 PM

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i never have any problem with my 2 rear o2 tune out i have cats
tune out 2 rear o2 sensor & air and egr then no more o2 code

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Nov 2, 2011 | 09:14 PM

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What doe the rear 02s even do? They see if the cats are doing their job?

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code, engine, po157, whats

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