Intermittant check engine light

Discussion in 'General Motoring' started by Cletus S. Yokel, Aug 15, 2003.

  1. I have a bizzare problem with my 2000 Legacy Outback Wagon. The check
    engine light comes on sometimes for days, then goes out, sometimes for days,
    then comes back on, etc. I had the codes checked and the indication was
    "defective heater element, front 02 sensor. I replaced it...same ol' shit.
    Same code. Sometimes CEL is on, sometimes it's off. Clear the codes, same
    one comes back.

    Cletus S. Yokel, Aug 15, 2003
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  2. Cletus S. Yokel

    someone Guest

    Sounds like a connection/wiring problem in the front O2 sensor CIRCUIT.
    Somewhere between the ECM and the sensor.....
    someone, Aug 15, 2003
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  3. Cletus S. Yokel

    Edward Hayes Guest

    There are 3 O2 sensors. Any chance it's a different one than the one you
    Edward Hayes, Aug 15, 2003
  4. Cletus S. Yokel

    TG Guest

    could be the exhaust gaskets. TG
    TG, Aug 16, 2003
  5. Cletus S. Yokel

    Bud Guest

    Get an ohmmeter and check the remaining O2 sensor heaters, one of them is
    Bud, Aug 16, 2003
  6. I still don't get why this would be intermitant. Also, the car runs
    perfectly whether the CEL is on or not.

    I was thinking along the lines that it may be a loose connection, but
    considering the age of the car and the types of connectors involved, I doubt
    that is the problem.
    Cletus S. Yokel, Aug 19, 2003
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