PO133 Code - Which O2 Sensor?

Discussion in 'General Motoring' started by Jeff, Sep 6, 2003.

  1. Jeff

    Jeff Guest

    I've had a sporadic SES light, Autozone read it as a PO133 code which
    relates to the O2 sensor, my question is, they have two O2 sensors
    listed, one pre-cat converter and one post. Any thought as to which
    O2 sensor this code relates to? The car is running fine and has
    passed smog recently (thankfully the SES light stayed off through the
    test...) but I'm thinking I should take care of it eventually.

    Jeff, Sep 6, 2003
  2. P0133 is sensor 1, the pre-catalyst sensor.
    Robert Hancock, Sep 6, 2003
  3. Jeff

    marx404 Guest

    Hey Jeff,

    According to Haynes book, P0133 code is "Upstream heated O2 sensor circuit
    high voltage (Bank 1 Sensor 1)

    Best I could find. Good luck.
    marx404, Sep 6, 2003
  4. Jeff

    Jeff Guest

    Thanks to all that responded. A follow-up question, anyone know the
    real difference the $22.99 Borg Warner I got at Kragen and the ones
    that cost 3-4 times as much? I had to cut the old wire and re-use the
    wiring harness, but I figured at this cost even if it doesn't last
    quite as long I could replace this three times for the price of one of
    the others? In any case, it's done the trick and no more SES light.

    Jeff, Sep 13, 2003
  5. Probbably the box it came in. IIRC, almost all O2 sensors are Bosch or
    NTK (???)
    Philip Nasadowski, Sep 14, 2003
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