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Testing O2 sensor

Discussion in '1st Gen. Tacomas (1995-2004)' started by djohn24, May 24, 2018.

  1. May 24, 2018 at 5:57 PM
    #1
    djohn24

    djohn24 [OP] Well-Known Member

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    This is a 234-4189 sensor. Checking to see if any knows the range it should be reading for a good sensor. My ohms reading is 13.4 which seems kinda high. Hoping someone may know. Thanks!IMG_E1327[1].jpg

    IMG_E1327[1].jpg
     
  2. May 24, 2018 at 9:07 PM
    #2
    Currygoat

    Currygoat Well-Known Member

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    Rims, 4600 Bilsteins, K&N filter
  3. May 25, 2018 at 1:46 PM
    #3
    djohn24

    djohn24 [OP] Well-Known Member

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    Thanks Currygoat! So, I am guessing at 13.4, I have a bad 02 sensor that I just bought new off Amazon.


     
    Last edited: May 25, 2018
  4. May 26, 2018 at 1:27 PM
    #4
    djohn24

    djohn24 [OP] Well-Known Member

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    Ok, checked the ohms on the existing O2 sensor that is still in the truck. 14.9. So, I am guessing the new one at 13.4 is okay. I am getting the P0136 code and running the truck and putting my hand up by the sensor, I feel a good bit of exhaust air coming out. I believe that is why I am getting the code and the sensor is okay.
     
    Last edited: May 26, 2018
  5. May 27, 2018 at 9:44 PM
    #5
    Currygoat

    Currygoat Well-Known Member

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    Rims, 4600 Bilsteins, K&N filter
    https://www.yourmechanic.com/articl...it-malfunction-bank-1-sensor-2-by-jay-safford

    States that it could be an exhaust leak before the sensor...

    Looking back at the previous post I sent you, I think the guy moved the decimal point incorrectly when writing the post. My take on his post is 8.0-14.0 is ok.... but I dont know the factory spec. So it sounds like your new o2 sensor is operating within the expected ohm limit.
     
    Last edited: May 27, 2018

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