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Help P0139 what does it mean?

     
Old 12-28-2008, 01:51 PM
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Help P0139 what does it mean?
I went and bought a CANOBII reader to find out the code P0139 can someone tell me what it means thank you.
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Old 12-28-2008, 02:54 PM
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P0139 = Rear HO2S Circuit Slow Response

Could be a defective O2 sensor (the one on the cat).
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Old 12-28-2008, 07:23 PM
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Originally Posted by Jon316G
P0139 = Rear HO2S Circuit Slow Response

Could be a defective O2 sensor (the one on the cat).

O shizznt will that affect performance at all? I also got a misfire code I got new coils on the way.
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