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P0141 code help

Discussion in '1st Gen. Tacomas (1995-2004)' started by crimsonred2004, Apr 13, 2010.

  1. Apr 13, 2010 at 6:28 AM
    #1
    crimsonred2004

    crimsonred2004 [OP] X-wing Design Engineer

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    Sooooooo....about 3 weeks ago i got a check engine lite. Read the code and it was a P0141 code which says my O2 sensor for bank 1 sensor 2 is bad. Cleared the code several times and it would always come right back. This weekend i swapped out the O2 sensor with a bosch O2 sensor and cleared the code....check engine light went out when i cleared the code and all was well. Two days later the check engine light came back on and i got the same code again!!! Now i am scratching my head wondering WTF??? Anybody got any suggestions??? Hate to take it to the stealership to have them figure it out and pay big bucks for doing so....Thanks
     
  2. Apr 13, 2010 at 6:30 AM
    #2
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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  3. Apr 13, 2010 at 6:32 AM
    #3
    crimsonred2004

    crimsonred2004 [OP] X-wing Design Engineer

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    Why the Denso??? The Bosch was a direct replacement and not a universal type......
     
  4. Apr 13, 2010 at 6:34 AM
    #4
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    Toyota's are funny about O2 sensors. This isn't the first time I have seen some one use a Bosch as a replacement and it "fail". The part number you need is 234-4189
     
  5. Apr 13, 2010 at 6:34 AM
    #5
    airfce250

    airfce250 Active Member

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  6. Apr 13, 2010 at 8:09 AM
    #6
    derekp

    derekp giddy up!

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    I bought my sensors on Amazon, I didn't know we had a discount code at the other place. The 234-4189 price was around $77 and the 234-9003 (A/F sensor for the Manual trans 3.4 ltr) was around $123.
     
  7. Apr 13, 2010 at 8:19 AM
    #7
    crimsonred2004

    crimsonred2004 [OP] X-wing Design Engineer

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    oh....so now i got to eat the $84 i paid for the Bosch O2 sensor because Auto Zone will not take back the sensor cause i used it....figures.....
     
  8. Apr 13, 2010 at 8:39 AM
    #8
    Daudio

    Daudio Well-Known Member

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    I am having the same problem right now...I bought the sensor from a buddy that works at toyota and had my mechanic install it. Light went off for about a day then came right back on. I am dropping it off to him again so he can try to figure it out. It goes in tomorrow, I will post anything he figures out to try and help.
     
  9. Apr 13, 2010 at 10:44 AM
    #9
    crimsonred2004

    crimsonred2004 [OP] X-wing Design Engineer

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    ok....i am looking forward to what his answer is for the problem....was your sensor also a bosch sensor???
     
  10. Apr 13, 2010 at 10:50 AM
    #10
    scriber007

    scriber007 Well-Known Member

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    Try removing the positive cable on the battery wait 5 minutes. Then drive it around for 5 minutes. That is how i cleared mine. It never came back.
     
  11. Apr 13, 2010 at 10:50 AM
    #11
    derekp

    derekp giddy up!

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  12. Apr 13, 2010 at 3:29 PM
    #12
    Daudio

    Daudio Well-Known Member

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    No, I got a toyota sensor, but it is doing the exact same thing yours is....I have tried a few times to clear it myself but every 5-10 miles afterward it comes right back on. Hopefully he can get to it tomorrow, I am leaving it with him for a few days. I'll post as soon as I get the call.
     
  13. Apr 13, 2010 at 4:54 PM
    #13
    shitroc

    shitroc Master of War

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  14. Apr 14, 2010 at 10:04 AM
    #14
    crimsonred2004

    crimsonred2004 [OP] X-wing Design Engineer

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    Turns out that the check light was not a P0141...i guess the new O2 sensor was ok but now its the P0420 catalytic converter efficiency low code, guess the new O2 sensor is working ok and now senses bad stuff coming from the cat....i have a feeling its time to replace the cat....got 132k on the ole girl....any other suggestions???
     
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