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This is a discussion on O2 Sensor :( within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; "heated oxygen sensor voltage low" read this: http://www.clubwrx.net/forums/2012557-post4.html...

  1. #16
    Sammich Makin' Pwincess wrxtreme06's Avatar
    Join Date
    May 2007
    orlando flawduh
    I Support ClubWRX
    "heated oxygen sensor voltage low"

    read this: http://www.clubwrx.net/forums/2012557-post4.html

    your friendly, neighborhood subaru girl

    abbigale : 06 impreza wrx tr: cobb stage II

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  3. #17
    Super Moderator (Actually a SuperSpy) SD_GR's Avatar
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    Jul 2002
    CA, US
    I Support ClubWRX
    It means the current in the front O2 sensor's circuit is out of spec. The first thing in my view to check is the wiring itself. See this thread plus the linked thread within:


    Access is from below and to the side and the fender liner will fight you but it's feasible. If it turns out the sensor itself is at fault then I'd advise using a genuine replacement, but either you or any competent mechanic can fit it if you don't like dealer pricing.

    All this assumes the car is stock. I am still a little unnerved by an apparent O2 sensor on a 2006 model. Did you check the owner's manual to see how long your emissions component warranty is and what components are covered, by the way?
    The world breaks everyone and afterward many are strong in the broken places. But those that will not break it kills. It kills the very good and the very gentle and the very brave impartially. If you are none of these you can be sure it will kill you too but there will be no special hurry. Ernest Hemingway, A Farewell to Arms, 1929
    WRX Info Links, Courtesy TheJ
    DISCLAIMER: Opinions expressed are the author's alone and are inherently worthless.

  4. #18
    Registered User svynx's Avatar
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    Aug 2008
    Hellam, pa
    Mine is reading the same thing. I was told that the o2 sensors have two parts. One does the readings, the other heats the sensor when the engine is cold so it works properly. My mechanic said it was the heating part. Doesn't really effect the way the engine works. But, I (and most of us) hate seeing that CEL come on.

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  6. #19
    Registered User PRIMAJIN's Avatar
    Join Date
    Jul 2008

    o2 sensor question

    po171 system too lean, bank 1...i know their can be a number of things that could be causing this, however i recently started to notice a drop in miles per gallon, i just filled my tank and i went through a quarter of gas already and have only went 50 miles...do these symptoms point at the o2 sensor, or could it still be somthing else...? thanx for the feedback fellas.

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