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Forward Rear Axle Temperature

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by KeepUp, Apr 19, 2020.

  1. Apr 19, 2020 #1
    KeepUp

    KeepUp Bobtail Member

    17
    20
    Jul 20, 2017
    Iowa
    0
    Hello.....
    I took my 2015 Volvo to have the front and rear axle seals replaced because of the major leaks it was leaving on the ground. I get the truck out a week later. Get under a 30,000 lb load and 400 miles down the road the check engine light came on. Error code on the dash is MID 140 PID 77 FMI 5 and when I searched the Volvo Service Manual the code states 'FORWARD REAR AXLE TEMPERATURE' Abnormally low current or open circuit | Sensor resistance above 100 kOhm | Faulty harness Faulty outdoor temperature sensor.
    I have the following questions:
    Is this something the mechanic missed when doing the seals? Either checking a plug or circuit was bad or forgot a procedure step?
    Can this cause serious damage?
    Can this cause a trickle effect of problems in other areas?

    Thank you for your help.
    Joe
     
    KeepUp, Apr 19, 2020
    KeepUp, Apr 19, 2020
    #1
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  3. Apr 19, 2020 #2
    Mattmanstroked

    Mattmanstroked Light Load Member

    185
    277
    Nov 24, 2019
    0
    I would look and see if the wires were plugged up on the sensor.
     
    Mattmanstroked, Apr 19, 2020
    Mattmanstroked, Apr 19, 2020
    #2
    KeepUp and Rideandrepair Thank this.
  4. Apr 19, 2020 #3
    KeepUp

    KeepUp Bobtail Member

    17
    20
    Jul 20, 2017
    Iowa
    0
    Thank you for the response.
    Is this something I can see or will have to take back to the shop?
     
    KeepUp, Apr 19, 2020
    KeepUp, Apr 19, 2020
    #3
    Rideandrepair Thanks this.
  5. Apr 19, 2020 #4
    Mattmanstroked

    Mattmanstroked Light Load Member

    185
    277
    Nov 24, 2019
    0
    Yes you can see. Should be wires going to the rear of the axle housing. About 1/3 of the way from the bottom of the big round part. Be easiest to see on rear most driver axle. That will give you an idea of where to look on front drive axle.
     
    Mattmanstroked, Apr 19, 2020
    Mattmanstroked, Apr 19, 2020
    #4
    KeepUp and Rideandrepair Thank this.
  7. Apr 20, 2020 #5
    201

    201 Road Train Member

    11,307
    22,926
    Apr 16, 2014
    high plains colorado
    0
    Piece of black tape over the code error light,,just another reason you can have newer trucks. Old "Stewart-Warner" temp gauge never let me down.
     
    201, Apr 20, 2020
    201, Apr 20, 2020
    #5
    KeepUp Thanks this.
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