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Po157-po137?

This is a discussion on Po157-po137? within the General Help forums, part of the LSx Technical Help Section category; I have a PO157 and a PO137 o2 codes in my 99 firebird. I changed the front o2 sensors, but ...

  1. #1
    Junior Member
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    2000 WS6 Ram Air

    Po157-po137?

    I have a PO157 and a PO137 o2 codes in my 99 firebird. I changed the front o2 sensors, but still have hesitation and CEL comes on at times. Any suggestions?

  2. #2
    Senior Member
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    Jul 2005
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    Jacksonville, FL
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    2,725
    Those codes are for low voltage on both REAR 02 sensors.

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