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Oxygen sensor heater Low voltage

Discussion in 'Omega, Monaro VXR, VXR8, Carlton, Senator, Manta & Monza owners forum' started by danuk, Jan 22, 2006.

  1. danuk

    danuk Well-Known Member

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    Im gettting Oxygen sensor heater Low voltage fault code.

    Is this really an issue though, as it only seams to happen after a long run, after I have stopped the car for a short while and restarted it, the light appears for maybe 10 seconds.

    Cheers

    Dan.
  2. JasonH

    JasonH Active Member

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    What exactly is the error code?

    I had an error 89 and thought it was a heater low voltage because I looked at the Topbuzz site. Further research said it was a faulty O2 sensor.
  3. Marks DTM Calib

    Marks DTM Calib Omega Tank Commander

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    The heater is integral to the o2 sensor....
  4. JasonH

    JasonH Active Member

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    Sorry - didn't make myself clear.

    For fault code 89:

    1) The topbuzz description was "oxygen sensor heater low voltage".
    2) The vauxhall college description was "sensor circuit 2 voltage low".

    From (1) I didn't know which sensor was the problem. It also seemed to indicate that the problem was only the heater. Bad - but it would work once it heated up naturally.

    From (2) I knew which sensor was the problem and that it really had to be replaced.
  5. JasonH

    JasonH Active Member

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    Back to the original question.

    My advice would be to change the O2 sensor. If it's so bad that the ECU can detect it then it's probably pretty tired. A sluggish sensor will not be good for performance, economy or the cat.

    Quite easy to change as long as it hasn't siezed in place.

    Cost from Gendan is around £50.

    This could be the one you need:
    http://www.gendan.co.uk/product_LB1010.html
  6. danuk

    danuk Well-Known Member

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    Yes but which one is it
  7. JasonH

    JasonH Active Member

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    What's the error code?
  8. danuk

    danuk Well-Known Member

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    Ooops, didnt see you had replyed.

    Its 89 - Oxygen sensor heater Low voltage
  9. JasonH

    JasonH Active Member

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    Snap - same as me.

    That's the oxygen sensor on the passenger side of the car. Mines a year 2000 2.5 V6.

    The genuine sensor from Vauxhall was £120 (+VAT?).

    The Gendan one in the link above cost £50 delivered and turned up pretty quickly. Works fine. Only comment is that the lead was slightly shorter than the original. Not really an issue as you can still route the lead nicely.
  10. danuk

    danuk Well-Known Member

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    Cheers for that, I shall look into getting another.

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