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Abs light issues

Discussion in 'Electrical' started by Chipowalkee, Mar 5, 2023.

  1. Mar 5, 2023 at 6:27 PM
    #1
    Chipowalkee

    Chipowalkee [OP] New Member

    Joined:
    Mar 5, 2023
    Member:
    #7582
    Messages:
    2
    Gender:
    Male
    First Name:
    Jimmy
    Vehicle:
    2014 JKU Rubicon
    Hey,
    I’ve searched these forums for a few days and tried a few different things but still no fix or answer.
    Im looking for some help with an ABS issue.
    I have replaced the front left sensor twice. Pins are good. 11.8v at the pins.
    Battery voltage is 12.6v off and 14.2v when running.
    Picture shows the codes I have. Any help is appreciated.

    Have aftermarket headlights and radio so disregard the last two codes.
    F4A40142-6A97-4289-A4F3-671020B2A838.jpg
     
  2. Mar 5, 2023 at 7:36 PM
    #2
    JKBob 25

    JKBob 25 Well-Known Member

    Joined:
    Mar 22, 2017
    Member:
    #1197
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    3,874
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    Bob
    Jersey Shore, NJ
    Vehicle:
    2016 JK Wrangler Sport
    Im probably not going to say anything you already don't know. So please forgive me. Don't mean to point out the obvious. But since I don't know what you've done or not done yet. This is off the top of my head. Anyway...

    "C" codes are an issue with either or both your chassis, suspension, and/or anti lock brakes. Based on the codes you posted.
    C2100 Low battery voltage
    C2101 high battery voltage
    C100a FL wheel sensor issue.

    I would have to say there's a bad ground at the chassis. A bad connection somewhere between the sensor and the ECU. Or...your battery is the issue. I know you had battery tested along with your alternator. Doesn't make sense why your getting both a high and low reading at the ECU. How are your battery cables? Is it possible when you replaced the wheel sensor, you hit something, knocked a wire loose? Reason i say that is cuz of the "C" codes your getting.I'm grasping at straws. I would back track from the wheel sensor since it seems that's where all your problems started. Check the connector at the wheel sensor too.

    Maybe this will help.

    http://mmc-manuals.ru/manuals/outlander_iii/online/Service_Manual_2013/2017/35/html/M135503040002602ENG.HTM#:~:text=sensor connector terminal.-,Code No.C100A is set,speed sensor (LH) connector.
     
    aggrex likes this.
  3. Mar 8, 2023 at 9:55 PM
    #3
    Chipowalkee

    Chipowalkee [OP] New Member

    Joined:
    Mar 5, 2023
    Member:
    #7582
    Messages:
    2
    Gender:
    Male
    First Name:
    Jimmy
    Vehicle:
    2014 JKU Rubicon
    Hey,
    Just letting you know what I found. I replaced the battery and then had the alternator checked. It’s good and the low voltage code is gone so I guess the battery was failing or starting to even though it was holding a charge. As for the wheel sensor, that took a bit more. I replaced the chassis harness end and then ended up replacing the hub assembly. That finally fixed the c100a code.

    Thanks for your help and hope this helps someone else later on!
     
    JKBob 25 likes this.
  4. Mar 9, 2023 at 6:45 AM
    #4
    JKBob 25

    JKBob 25 Well-Known Member

    Joined:
    Mar 22, 2017
    Member:
    #1197
    Messages:
    3,874
    Gender:
    Male
    First Name:
    Bob
    Jersey Shore, NJ
    Vehicle:
    2016 JK Wrangler Sport
    Awesome @Chipowalkee . Happy to hear you got'er fixed. 9 times out of 10 if your CEL lights up and the vehicle isnt running poorly. It's usually something stupid.

    Thank you for posting up your fix and updating us. :thumbsup:
     
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