14 cascadia loses gauges no codes

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by 77fib77, Sep 26, 2022.

  1. 77fib77

    77fib77 Road Train Member

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    I have a dd15 cascadia 564k miles. I have a scan gauge it will go blank and the spedometer tachometer drop a bit then it powers right back up. Normal gauge drops 10 15 mph. I have changed master power switch, ignition switch, pndb, starter. All battery nuts are tight.

    It will do this on flat ground or going up a hill. No codes. Head lights stay on. It dies it a couple of times in 4 to 8 hours. Today it did it twice back to back. 15 seconds apart. I thought that was it. Then it ran good for another hour until I'm parked.

    Is it the cpc 4 module?
     
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  3. johnb!

    johnb! Bobtail Member

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    its most likely you main fuse box that's under the glove box. I had the same issue with mine, gauges would die or they wouldn't sweep when you turned the key on sometimes.
     
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  4. LoneRanger

    LoneRanger Road Train Member

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    Possibly a loose fuse, bad fuse, or bad connector on that slot. fuse box is in glove box.
     
  5. 77fib77

    77fib77 Road Train Member

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    I got it scanned again. Cpc4 codes came up. So I'm going to get it reballed and then figure out what to do.
     
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  6. LoneRanger

    LoneRanger Road Train Member

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    What year?
     
  7. 77fib77

    77fib77 Road Train Member

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    2014
     
  8. LoneRanger

    LoneRanger Road Train Member

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    Check the fuse before you take it in. Could save you hours of diagnostics and money if its not needed.
     
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  9. YardMule89

    YardMule89 Medium Load Member

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    Does it have the maxi-fuses located under cab below drivers door? Check for corrosion there as well. I don't recall what year they moved them, but something to look for.
     
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  10. 77fib77

    77fib77 Road Train Member

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    Like on the pndb? Those are some fuses. I only checked the fuses on the fire wall in the engine bay. I already dropped off the CPC4 to get reballed so it's kind of there already.
     
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