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Thread: CHECK ENGINE CODES : 2007-Up Jeep JK Wrangler

  1. 11-27-2014, 06:15 AM #11
    RalphTomaccio
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    Add a Code to your list

    Just experienced an issue with codes on my 2012 JKU but I don't see it listed here. It is C123f, steering angle sensor comparative performance. May want to add it to your list.
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  3. 12-08-2014, 07:53 PM #12
    MedixJK
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    Ive got a u0101 code showing, lost communication with tcm. Can anybody elaborate on that? Anyone else seen this?
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  4. 12-08-2014, 07:57 PM #13
    SFNick
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    Quote Originally Posted by mattbeach View Post
    Ive got a u0101 code showing, lost communication with tcm. Can anybody elaborate on that? Anyone else seen this?
    Maybe a bad TPMS sensor.
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  5. 12-08-2014, 08:01 PM #14
    MedixJK
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    Quote Originally Posted by SFNick View Post
    Maybe a bad TPMS sensor.
    Hmmm. Ok. Any idea what tcm stands for? I just disabled the tpms 4-5 days ago with my flashcal.
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  6. 12-08-2014, 08:04 PM #15
    SFNick
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    Quote Originally Posted by mattbeach View Post
    Hmmm. Ok. Any idea what tcm stands for? I just disabled the tpms 4-5 days ago with my flashcal.
    It's the Transmission Control Module
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  7. 12-08-2014, 08:07 PM #16
    MedixJK
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    Quote Originally Posted by SFNick View Post
    It's the Transmission Control Module
    Oh ok. Got ya. What makes you think tpms sensor? Not doubting you, just tryin to learn somethin lol.
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  8. 12-08-2014, 08:07 PM #17
    SFNick
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    CHECK ENGINE CODES : 2007-Up Jeep JK Wrangler

    I was throwing the same code but mine was do to the TPMS. I would not think that would be the case in your situation since you have it disabled.
    Last edited by SFNick; 12-08-2014 at 08:13 PM.
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  9. 12-08-2014, 08:09 PM #18
    SFNick
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    CHECK ENGINE CODES : 2007-Up Jeep JK Wrangler

    Quote Originally Posted by mattbeach View Post
    Oh ok. Got ya. What makes you think tpms sensor? Not doubting you, just tryin to learn somethin lol.
    No worries. Try resetting it with your programmer. Usually if you have a bad TCM you'll be stuck in limp mode.
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  10. 12-08-2014, 08:19 PM #19
    MedixJK
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    Quote Originally Posted by SFNick View Post
    I was throwing the same code but mine was do to the TPMS. I would not think that would be the case in your situation since you have it disabled.
    Quote Originally Posted by SFNick View Post
    No worries. Try resetting it with your programmer. Usually if you have a bad TCM you'll be stuck in limp mode.
    Yea i was driving on a road when it came on. A little bumpy but no major jarring. Seemed to drive completely fine afterwards, i just dont wanna stranded somewhere.
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  11. 12-08-2014, 08:21 PM #20
    SFNick
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    Quote Originally Posted by mattbeach View Post
    Yea i was driving on a road when it came on. A little bumpy but no major jarring. Seemed to drive completely fine afterwards, i just dont wanna stranded somewhere.
    I would check your battery connections. If it was do to a lose connection. It should clear it self after awhile.
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