T700 A Few Sensor Issues

Discussion in 'Kenworth Forum' started by Truckboss, Sep 19, 2019.

  1. Truckboss

    Truckboss Bobtail Member

    Sep 19, 2019
    2011 T700 w/ Paccar MX 13

    P102A = Temperature after BPV - Voltage too high or short circuit to supply on ECU (D420) pin (C11)

    Not sure about this one? When is this temp sensor located?

    P0107 = Boost pressure sensor F802 - ECU pin A51 signal voltage too low

    Thinking bad wiring on sensor here or bad sensor, should be an fix. Can I clean this sensor since it gets soot on it?

    P3841 = Air shutoff valve - Stuck in closed position

    This one is related to this:
    Air Shutoff Valve Short To Ground Or Open Circuit On ECU Pin A32
    Possible causes:
    1) The air shutoff valve fails to open.

    I am thinking it is the valve with the banjo bolt, is that correct?

    I have this project on deck for tomorrow. Any help or suggestions would be greatly appreciated.
  2. Intothesunset

    Intothesunset Road Train Member

    Apr 15, 2019
    All I know is there are some sensors on that truck that are made poorly and fail often. But perhaps they are updated now. Or I may be thinking of Cummins, not sure if the same sensors are on the MX.
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