Active codes, International Prostar with a Cummins ISX 15

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Ollie8281, Aug 27, 2018.

  1. Ollie8281

    Ollie8281 Bobtail Member

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    Dec 12, 2017
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    Hello, I have a 2014 International Prostar with a Cummins ISX 15 that has a active code. The code are SPN:171 FMI: 2 OC:1 Thanks in advance for your help.
     
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  3. FlyingA

    FlyingA Bobtail Member

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    Jun 3, 2018
    Sacramento, Ca
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    What I am reading if correct is the ambient air temp sensor is faulty.
     
  4. Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    Yep, ambient air temp sensor data erratic. If your truck was built after May 2014, it will be located in the left mirror behind the glass, before May 2014 it is located around the front bumper. May be bad wiring too.
     
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