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cascadia dd15 cant go over 55mph

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by 4noReason, Aug 3, 2018.

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  1. Aug 3, 2018 #1
    4noReason

    4noReason Road Train Member

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    i have a 2012 dd15 cascadia. today my check light came on then stop light but never shut off. i been getting ecu 1 code each day at start up for a while now but no issues. also my def fluid level on dash went from 3 green bars to 1 red blinking bar. and now my truck will go max 55mph in 10th gear. in 9th it goes 55 mph too 1600 rpm. 1200rpm in 10th. any idea what it can be. im scheduled to go to shop monday but im really worried. the truck doesnt have the def active btw so its not the low fluid.
     
    4noReason, Aug 3, 2018
    4noReason, Aug 3, 2018
    #1
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  3. Aug 3, 2018 #2
    Oldironfan

    Oldironfan Road Train Member

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    Def harness issue.
     
    Oldironfan, Aug 3, 2018
    Oldironfan, Aug 3, 2018
    #2
    4noReason Thanks this.
  4. Aug 3, 2018 #3
    mhyn

    mhyn Road Train Member

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    let me guess. you have 3 active codes. correct ?
     
    mhyn, Aug 3, 2018
    mhyn, Aug 3, 2018
    #3
    4noReason Thanks this.
  5. Aug 3, 2018 #4
    4noReason

    4noReason Road Train Member

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    ummmm ecu 1 eec 61 i think was it. darn didnt fully check
     
    4noReason, Aug 3, 2018
    4noReason, Aug 3, 2018
    #4
  7. Aug 3, 2018 #5
    4noReason

    4noReason Road Train Member

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    really. geez finding someone to replace that wont be fun
     
    4noReason, Aug 3, 2018
    4noReason, Aug 3, 2018
    #5
  8. Aug 3, 2018 #6
    mhyn

    mhyn Road Train Member

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    get the code and I will tell what could be the problem. You have a problem with aftertreatment system
     
    mhyn, Aug 3, 2018
    mhyn, Aug 3, 2018
    #6
    4noReason Thanks this.
  9. Aug 3, 2018 #7
    4noReason

    4noReason Road Train Member

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    just great. a problem with something that is bypassed. which is usually dealer only. should of got a pre-emission truck
     
    4noReason, Aug 3, 2018
    4noReason, Aug 3, 2018
    #7
    Oldironfan Thanks this.
  10. Aug 3, 2018 #8
    AModelCat

    AModelCat Road Train Member

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    Can someone explain how "the DEF is not active?"
     
    AModelCat, Aug 3, 2018
    AModelCat, Aug 3, 2018
    #8
  11. Aug 3, 2018 #9
    4noReason

    4noReason Road Train Member

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    its bypassed .
     
    4noReason, Aug 3, 2018
    4noReason, Aug 3, 2018
    #9
  12. Aug 3, 2018 #10
    Working2party

    Working2party Medium Load Member

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    Feb 10, 2018
    Kansas
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    It sounds like your truck has started the Government mandates shut down. If you haven’t yet, DON’T fuel or fill your DEF. It’ll tell the ACM that your in civilization and will shut you down to 5mph. (That’s not a typo). Your best bet is to drive to what ever shop your headed for Monday and shut it down.
    The government codes show up after an after treatment fail code has been active for a set amount of miles or time. The 55mph limit with the DEF light flashing is the second to last severity. Next step involves a hook.

    If you can enter your dash diagnostic code read out you should find a SPN number and a Fail number. Get us that and we may be able to help you fool it long enough to get the the shop.
     
    Working2party, Aug 3, 2018
    Working2party, Aug 3, 2018
    #10
    x1Heavy and 4noReason Thank this.
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