Volvo Truck ABS Trouble Code Help

Discussion in 'Volvo Forum' started by gwinnetts, Dec 27, 2014.

  1. gwinnetts

    gwinnetts Bobtail Member

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    Dec 27, 2014
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    [h=2]Volvo Truck ABS Trouble Code Help[/h]
    I have a 2012 Volvo VNL780 with a TCS light that stays on all the time. Trouble codes (active) are MID 136 SID 78 FMI 2 and MID 136 SID 77 FMI 7. Can anyone shed any light on what I need to look for to correct these?
    VIN is 4V4NC9TJ7CN558798. Engine is ISX. Any help would be greatly appreciated.
     
  2. reefer101

    reefer101 Medium Load Member

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    Oct 24, 2014
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    sensors on wheels or abs computer under the cab which costs around $1.700
     
  3. Pablo-UA

    Pablo-UA Road Train Member

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    This code is much cheaper, just pressure sensors wiring!
     
    gwinnetts Thanks this.
  4. gwinnetts

    gwinnetts Bobtail Member

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    Dec 27, 2014
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    Thank you . I will check the sensor connections. Those are located in the airbags aren't they?
     
  5. Pablo-UA

    Pablo-UA Road Train Member

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    Depending on ABS/EBS configuration

    If u have truck with "traditional" foot brake valve demand sensors are used, if full EBS - sensor is built in brake valve.
     
  6. Pablo-UA

    Pablo-UA Road Train Member

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    really the problem is that to reset code u need Knorr-Bendix software, it is called A-Com.
     
  7. Eagle-Vinnytsya

    Eagle-Vinnytsya Bobtail Member

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    Jan 25, 2017
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    MID 136 SID 78 FMI 2 is on my 2013 670 isx 525hp. TCS light is ON
     
  8. Robson

    Robson Bobtail Member

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    MID 136 SID 77 FMI 2 2009 Volvo D13



    Solved the problem Air Pressure Switch Sensor part # 20476992 located on fairwall next to cluch pedal cost $70 at dealer and took 5 min to replace, B4 I spent over $1000 to replace valvs,sensors, itp itd at mechanic shop .... no help at all

    [​IMG]
     
    Last edited: May 31, 2017
    HopeOverMope, Johny41 and Socal Xpress Thank this.
  9. Huksn

    Huksn Bobtail Member

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    Jul 16, 2017
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    Hi I have fh 12 2006 modil code mid136 psid 64 fmi 13 plz help
     
  10. Turtle356

    Turtle356 Bobtail Member

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    Aug 9, 2017
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    Can someone please tell me what MID136 sid89 FMI5 means please
     
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