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Thread: Rear 02 sensor error

  1. #11
    Senior Member
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    Verify no leaks on you exhaust and the GM single wire sensor is under $20 throw one in then check your live data warmed up with the seat off do a wiggle test on the harness and pay close attention to any spikes in O2 data. I have several B bodies and keep a sensor on the shelf that fits them and my Buells the box is getting old they last so long but still cheap insurance to put in a new one first.

    Then follow Shaughn’s advice and check fuel delivery. That is more time consuming and if you get lucky the sensor will fix it.
    Last edited by cvc; 01-05-2022 at 11:55 AM.

  2. #12
    Well to update with current status.
    A few days after I last posted, as my clocks rolled over to 80000km, my speedo and odo stopped
    working. I followed google and removed the sensor. It had very little grey matter, but I cleaned
    it up, replaced it, and also cleaned and reseated the 3 pin connector.
    Since that day I have had a working speedo/odo and also never seen an O2 error again....

    Then yesterday on my way home, I had a brief engine stumble along with the CEL come on
    for about 2-3 seconds and then all returned to normal.
    A quick check when I got home showed no error stored and an AFR of 95,6 .
    All other tests passed and nothing "seems" out of place.
    So my question would be, is this then a sign of a failing fuel pump, or
    should I be looking elsewhere. ?
    I could run live data on the Buelltooth, but I honestly wouldnt know
    what to be looking for.

  3. #13
    Senior Member 34nineteen's Avatar
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    Quote Originally Posted by Beebop View Post
    Well to update with current status.
    A few days after I last posted, as my clocks rolled over to 80000km, my speedo and odo stopped
    working. I followed google and removed the sensor. It had very little grey matter, but I cleaned
    it up, replaced it, and also cleaned and reseated the 3 pin connector.
    Since that day I have had a working speedo/odo and also never seen an O2 error again....

    Which sensor?

  4. #14
    Senior Member Cooter's Avatar
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    I think he means O2 sensor.

    One small stumble and no clue to why means ignore it, or the depth of that wormhole knows no end. You can LOOK for things though. Wash it, wax it, look at what you're doing. Its a good way to see your own bike up close while doing the Lords work. Even take the airbox off and LOOK closely at everything. Your AFV is fine 90-110.

  5. #15
    Sorry wasnt clear.
    the speed sensor was removed and cleaned.
    I have not yet touched the O2 due to its location
    and basic lack of time on my side.



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