96 ETC code P 0139
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Cadillac Seville / Cadillac Eldorado Forum Discussion, 96 ETC code P 0139 in Past Cadillac Vehicle Discussion; code p0139 others causes besides o2 sensor? can maf sensor be dirty?...
  1. #1
    opticallab is offline Cadillac Owners Member
    Automobile(s): 1996 eldorado touring
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    Unhappy 96 ETC code P 0139

    code p0139 others causes besides o2 sensor? can maf sensor be dirty?

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: 96 eldorado touring code p0139

    What's P0139 mean?

  4. #3
    Submariner409's Avatar
    Submariner409 is offline If it won't run, stick on fender vents
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    Re: 96 ETC code P 0139

    Yep ^^^

    We don't have the several thousand codes memorized yet ............. Do some homework.

    http://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

  5. #4
    vincentm's Avatar
    vincentm is offline Cadillac Owners Connoisseur
    Automobile(s): 1997 Cadillac Eldorado ETC
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    Re: 96 ETC code P 0139

    DTC P0139 HO2S Slow Response Bank 1 Sensor 2

    But his is a 96, wouldn't this be an OBDI vehicle? Or a bit of both OBD I & II? Or is that 95's?


    I need a beer

  6. #5
    amunderdog is online now Cadillac Owners Connoisseur
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    Re: 96 ETC code P 0139

    96 should be OBD II

  7. #6
    N*Caddy's Avatar
    N*Caddy is offline Cadillac Owners Master
    Automobile(s): 1997 Cadillac STS (BOSE w/AUX In, Massage Seats, URPAS, "Z")
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    Re: 96 ETC code P 0139

    '96 cars are mostly OBDII (enough so they comply with the Federal law). We can call '96 a transition year (sometimes when dealing with '96 vehicles you may need to go and check OBDI codes).
    This code is OBDII and I found it for the OP:
    DTC P0139 HO2S Slow Response Bank 1 Sensor 2
    Basically replace that O2 sensor.

  8. #7
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: 96 ETC code P 0139

    The '96 PCM codes are OBDII. I think most of the others where still OBDI until '97.

  9. #8
    stoveguyy is offline Cadillac Owners Connoisseur
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    Re: 96 ETC code P 0139

    how long does code take to return after you clear it? i am getting 0140 which is no activity. i did change sensor 18 months ago. code went away but recently came back.

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