Where is the sleeper cab temperature sensor in a 2021 Cascadia?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Farmerbob1, Aug 21, 2021.

  1. Farmerbob1

    Farmerbob1 Road Train Member

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    I have been Googling for it, but all the responses I am generating are for outdoor temperature sensors, or duct temperature sensors, which are both completely useless to me.
     
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  3. supersnackbar

    supersnackbar Road Train Member

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    Mine is that little thing sticking out near the 12v outlet. Looks like this

    PXL_20210821_235105333.jpg
     
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  4. Farmerbob1

    Farmerbob1 Road Train Member

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    Thanks!
     
  5. supersnackbar

    supersnackbar Road Train Member

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    If you take off that big plastic cover on the inside back wall of your hanging closet, you'll see the wiring harness for all the HVAC components and the 12v outlets and the light switches. I had originally fhought that sensor was a wire keeper for my phone cord so it stays out of the way, but I took that cover off to see if there was some sort of wiring issue with the thermostat when my opti-idle started acting up. That's when I noticed a wire hooked to that sensor.
     
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