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O2 sensor needs to be fixed

Discussion in 'Gen 2 Prius Main Forum' started by Dwight Schrute, Sep 28, 2015.

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  1. Dwight Schrute

    Dwight Schrute New Member

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    Title says it all. I bought a 2008 prius with 83k on it this weekend. I bought it knowing about the O2 sensor. Has anyone replaced this themselves? Because the guy who I bought it from, was very honest with me, and told me he was quoted at the dealer 300 or 500 to fix it ( I don't remember what he said! it was one of those numbers, either way, 300 is still a lot). I'd like to replace this myself, and from what I understand, my fuel economy is all thats being affected, right? I am still getting like 43 mpg.
     
    #1 Dwight Schrute, Sep 28, 2015
  2. valde3

    valde3 Senior Member

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    What’s the fault code? Do you mean front or rear o2 sensor? Front sensor is actually air fuel ratio sensor and it’s in hard spot to remove. Rear sensor is easier.
     
    #2 valde3, Sep 29, 2015
  3. cyclopathic

    cyclopathic Senior Member

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    If it is rear it is a converter issue
     
    #3 cyclopathic, Sep 29, 2015
  4. E Risch

    E Risch Junior Member

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    Downstream is like 10 minutes to R/R about $56 on my '04 (only buy Denso)
     
    #4 E Risch, Sep 29, 2015
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  5. Dwight Schrute

    Dwight Schrute New Member

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    I think its the front. I will have to double check.. Im like 99% positive its the front
     
    #5 Dwight Schrute, Sep 29, 2015
  6. Dwight Schrute

    Dwight Schrute New Member

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    I am pretty sure its the front
     
    #6 Dwight Schrute, Sep 29, 2015
  7. cyclopathic

    cyclopathic Senior Member

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    If it is front clean connector. Does it burn oil? If it does this may be the root cause.
     
    #7 cyclopathic, Sep 29, 2015
  8. Dwight Schrute

    Dwight Schrute New Member

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    I am not aware that it burns oil if it does. Previous owner never mentioned it, but I will look out for that. thanks.
     
    #8 Dwight Schrute, Oct 1, 2015
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