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joesal68
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Post subject: 2 new codes, P0131 /p0151  Posted: Sun Apr 21, 2013 8:06 pm |
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Joined: Mon May 23, 2011 2:33 am
Posts: 41
Location: illisheim
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Just got the PCM back, and have 2 new codes, P0131 /p0151, it has a little hesitation while driving, Cleaned the MAF.....any Ideas, O2 sensors?
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NXZ28
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Post subject: Re: 2 new codes, P0131 /p0151 Posted: Tue Apr 23, 2013 5:21 am |
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Joined: Wed May 05, 2004 7:13 am
Posts: 706
Location: Vilseck
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P0131 is your left side oxygen sensor low voltage circuit.
P0151 is your right side oxygen sensor low voltage circuit.
Do you have a regular scanner that can read the O2 voltages? Seems odd they would both be out at the same time. Did you install the headers? If so, ensure the wiring harnesses didn't touch the headers.
_________________
2002 Camaro Z28
416 Stroker
AFR, Comp Cam Solid Roller, Currie 9", Super Victor, 4500 TB, TH350, T&D Rockers, 50# Injectors
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joesal68
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Post subject: Re: 2 new codes, P0131 /p0151 Posted: Wed Apr 24, 2013 6:04 am |
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Joined: Mon May 23, 2011 2:33 am
Posts: 41
Location: illisheim
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i Have not installed the headers yet, I had the tune done done with headers. I will install them this weekend and rescan. I will post some freeze frame data later, thanks. How is Vilseck, have not been up there in a while
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NXZ28
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Post subject: Re: 2 new codes, P0131 /p0151 Posted: Wed Apr 24, 2013 9:06 pm |
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Joined: Wed May 05, 2004 7:13 am
Posts: 706
Location: Vilseck
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It finally warmed up some. But, the training area is still in my backyard which stinks!
_________________
2002 Camaro Z28
416 Stroker
AFR, Comp Cam Solid Roller, Currie 9", Super Victor, 4500 TB, TH350, T&D Rockers, 50# Injectors
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joesal68
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Post subject: Re: 2 new codes, P0131 /p0151 Posted: Mon Apr 29, 2013 6:46 pm |
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Joined: Mon May 23, 2011 2:33 am
Posts: 41
Location: illisheim
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So, installed the headers, Tune was done by frost, Switched out MAF sensor with new one, Fuel pump is only 2 yrs old as well as filter..........Any ideas??
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NXZ28
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Post subject: Re: 2 new codes, P0131 /p0151 Posted: Mon Apr 29, 2013 7:48 pm |
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Joined: Wed May 05, 2004 7:13 am
Posts: 706
Location: Vilseck
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Is the hesitation under WOT or just normal driving? You need to take an 02 sensor reading after the engine is warm. A bad O2 sensor will usually read around 100mv or below. Also, did any symptoms start after putting fuel in the car? I pumped a full tank of crappy fuel when I was in Georgia. It caused numerous codes to start and I actually changed the MAF out. It took some time to clear up.
_________________
2002 Camaro Z28
416 Stroker
AFR, Comp Cam Solid Roller, Currie 9", Super Victor, 4500 TB, TH350, T&D Rockers, 50# Injectors
Last edited by NXZ28 on Tue Apr 30, 2013 6:29 am, edited 1 time in total.
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joesal68
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Post subject: Re: 2 new codes, P0131 /p0151 Posted: Tue Apr 30, 2013 5:25 am |
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Joined: Mon May 23, 2011 2:33 am
Posts: 41
Location: illisheim
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Its fine during WOT, it hesitates under light throttle.....checked for vacuum leak with some carb cleaner no leaks....I am hoping its the 02's i have always had the ses light on for a while, just never had read the codes until recently. If i was to buy o2 sensors what brand do you recommend??
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NXZ28
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Post subject: Re: 2 new codes, P0131 /p0151 Posted: Tue Apr 30, 2013 6:27 am |
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Joined: Wed May 05, 2004 7:13 am
Posts: 706
Location: Vilseck
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