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O2 sensor

Discussion in '4th Gen 4Runners (2003-2009)' started by just.blazen.in.the.yota, Jul 28, 2022.

  1. Jul 28, 2022 at 6:20 PM
    #1
    just.blazen.in.the.yota

    just.blazen.in.the.yota [OP] New Member

    Joined:
    Jul 28, 2022
    Member:
    #27995
    Messages:
    7
    Gender:
    Male
    First Name:
    Johnny
    Vehicle:
    2004 silver Runner
    My OBD scan tells me an error on my o2 sensor in Bank 2 sensor 1
    I am confused by the many different part numbers on the O2 sensors. I have to replace one on my 4Runner the dealership wants 207.99 and I cannot afford that at all. I am looking at after market options but there are so many different part numbers. I also do not understand the upstream
    And downstream options. It seems impossible to find the upstream one for the V6 model
    If you could please share some insight!!
     
  2. Aug 6, 2022 at 9:25 AM
    #2
    Stormrunner23

    Stormrunner23 New Member

    Joined:
    May 24, 2022
    Member:
    #27177
    Messages:
    12
    Gender:
    Male
    Texas
    Vehicle:
    2000 SR5 4Runner
    I am no expert on this and have just started to learn to work on my 2000 runner. When I was getting a CEL I went ahead and replaced both the upstream and downstream. I went to the DENSO site, put in my truck info, got the part numbers for upstream and downstream, and ordered them through Amazon.
     

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