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    Re: Which one is bank 1 sensor 2

    In rockauto.com there is two choices, which one OBD refer as bank 1 sensor 2

    NTK Part # 23151 Upstream; 1; 2; NTK is the OE Mfg $35.79
    NTK Part # 23099 Downstream; 2; NTK is the OE Mfg $35.99
    ...
  2. Replies
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    Which one is bank 1 sensor 2

    I have a 1998 XJ getting OBDII codes

    P0138
    O2 Sensor circuit high voltage (bank 1 sensor 2)

    P0141
    O2 Sensor Heater Circuit (bank 1 sensor 2)

    Which sensor do I need to replace upstream or...
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