Derate to 5mph crisis - regen not clearing codes for some reason

Discussion in 'Freightliner Forum' started by PermanentTourist, May 10, 2019.

  1. mover man

    mover man Road Train Member

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    Wont effect your e log. I had a choice disconnect speed sensor. Go unload them drive to dealer. Or call tow truck, speed sensor won. Didnt effect Qualcomm at all.
     
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  3. mover man

    mover man Road Train Member

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    Even if the Qualcomm didnt work. Screw safety there not paying your $$$$$ tow bill. So simply tell them when asked. You had truck breakdown problem it must have effected the q com. Your putting truck in shop.
     
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  4. PermanentTourist

    PermanentTourist Heavy Load Member

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    That sounds like an interesting thing to try... but the problem is, I don't even have any active emissions codes anymore. The only active codes I have are the 5246 derate codes and the 5397 too many regens code. And I get 80% nox conversion efficiency already when I run the regen. From what I've been able to find out, it seems that the truck is locked in limp mode that only the dealer level DDDL can clear. (I am running forced regens by pressing the dashboard button)
     
  5. mhyn

    mhyn Road Train Member

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    its your fault that you have regulatory codes. When you see spn 3364 does not go away after driving 30 min you need to stop and let nox sensor sniff clean air so regulatory codes wont login. Do what I said above and all regulatory codes will be cleared. done it many times ))) I keep one nox outlet sensor in my truck .
    If your diagnosticlink can start parked regen you can fix this issue.
     
  6. PermanentTourist

    PermanentTourist Heavy Load Member

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    Great idea, I'm going to do it from now on. Meanwhile, right now I'm going to try it anyways and hopefully it works. I'll let you know, thanks
     
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  7. mhyn

    mhyn Road Train Member

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    remember back to back 2 regens. diagnosticlink link must it start and wait until it stops. Monitor right bottom area of screen.
     
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  8. PermanentTourist

    PermanentTourist Heavy Load Member

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    The regen must be initiated by the diagnostic link, not the dash button?
     
  9. mhyn

    mhyn Road Train Member

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    by diagnosticlink. go to DPF section and scroll Parked Regen and follow instruction. It may say push the botton on dashboard or may not say it. Depends of ACM software version.
     
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  10. ast26909

    ast26909 Medium Load Member

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    Run a tank with Lucas 'deep clean' every 10,000 miles to keep the DEF system clean.
     
  11. PermanentTourist

    PermanentTourist Heavy Load Member

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    Is that a special thing for the d e f tank, or is it just a diesel additive?
     
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