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Thread: service engine soon question.
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09-17-2006, 02:05 PM #1Junior Member
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Midnight blue- 1999 Trans am
service engine soon question.
So The service engine soon light kicked on. I used a buddies code reader and it said "PO157(i think) Sensor circut low volts bank 2 sensor 2" I did a bit of research and I think this means that one of the 4(I think theres 4) o2 sensor is bad. could anyone conferm for me if my suspisions are correct of not. thanks.
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09-17-2006, 02:44 PM #2Senior Member
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Bank 2, Sensor 2 is the post cat 02 on the passenger side.
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09-17-2006, 02:45 PM #3Awaiting Activation
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yes there are 4 02s. Yes that code concerns the 02s but that doesn't mean that is the problem. I had that same code a few months ago 0157 and 0137 too. The problem was my MAF. So start by cleaning that. Use electronic contact cleaner - its like $10 at radio shack. Then report back.
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09-17-2006, 02:57 PM #4Junior Member
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Midnight blue- 1999 Trans am
MAF?? thats that abbrivated for?
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09-17-2006, 03:02 PM #5Life in the Fast lane
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Met. Sunset Orange- 01 SS
"maf" = Mass Air Flow sensor. Its between your intake lid and the throttle body.
Personaly i picked up some Crc Maf cleaner from local parts store and it worked great.
J2001 SS, Its not the car its the Driver that matters....
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09-17-2006, 03:19 PM #6Junior Member
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Midnight blue- 1999 Trans am
Ahhh, duh. Had a brain fart there for a second. thanks.
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