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2012 Freightliner Cascadia with Cummins ISX... 3 Fault Codes

Discussion in 'Trucks [ Eighteen Wheelers ]' started by EeeeZzz, Feb 15, 2019.

  1. Feb 15, 2019 #1
    EeeeZzz

    EeeeZzz Bobtail Member

    5
    2
    Dec 14, 2018
    Hermosa Beach, CA
    0
    Good Evening All,

    I went to my truck this morning to take it in for an alignment. After my pre trip, I started the truck and the MIL (Malfunction Indicator Lamp) was lit. I cycled the dash to the "faults" screen and 3 faults were listed. After searching multiple threads and of course Google, I have found some vague answers. 641 spn mentions the Turbo Actuator. 3360 spn mentions After Treatment DEF Controller. Lastly, 3216 spn makes reference to the After treatment intake NOX sensor. I find it quite odd that these would all go out at the same time. Makes me suspect (and hoping) that it might be bad ground or power connections. Any insight would be great. I have looked for detailed Fault Code files and can not find detailed information. Thanks in advance.

    Fault 1:
    -Eng 0
    -641 spn
    -Fail 11

    Fault 2:
    -Eng 0
    -3360 spn
    -Fail 9

    Fault 3:
    -Eng 0
    -3216 spn
    -Fail 9

    ::Truck Info::
    -2012 Freightliner Cascadia (last 8 of Vin: CSBV9904)
    -Cummins ISX 400 (serial number 79548320)
    -Eaton Fuller UltraShift (FM-14E310B-LAS)


    Thanks
     
    EeeeZzz, Feb 15, 2019
    EeeeZzz, Feb 15, 2019
    #1
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  3. Feb 16, 2019 #2
    Goodysnap

    Goodysnap Road Train Member

    3,724
    9,054
    Jul 12, 2017
    0
    Firstly, thank you for providing all of your necessary vehicle information when asking for help, I appreciate it. Well done.

    Now to your problem........
    All of your faults that you listed are for abnormal update rate for the VGT actuator, Intake NOX sensor and Aftertreatment controller. Basically this means that the ECM was not able to talk to these devices on the datalink for a time while the ECM was powered up. The only common between the devices is the datalink wires themselves.

    This issue will be very difficult to track down unless the faults remain active. Most likely you have a rubbed wire or bad connection somewhere between the components with the fault. If the fault status is inactive and low counts, put it back to work and monitor for the issue to reoccur. It is unlikely that a component is causing your issue, but not impossible.

    See if you can duplicate where it happens, if only hot. Ohm out the internal resistance of the vgt actuator to be 120 ohms.

    Good luck
     
    Goodysnap, Feb 16, 2019
    Goodysnap, Feb 16, 2019
    #2
    bzinger and QUALITYTRUCK Thank this.
  4. Feb 21, 2019 #3
    EeeeZzz

    EeeeZzz Bobtail Member

    5
    2
    Dec 14, 2018
    Hermosa Beach, CA
    0
    I appreciate the quick response! Apologize for the delayed response. I started my truck on Monday and had ZERO codes/faults. Very strange. Swapped Thermostat as my original was stuck open and not allowing truck to warm up in the morning. Long story short, went to work Tuesday and had anywhere from 6-12 codes/faults show up. Not to mention the "Stop" engine and "Check" engine lights would come on and off. Pulled over and checked all fluids. As I sat Idling, I noticed the DIAG dash display would again fluctuate codes/faults from 4-12. ended workday early.

    Had local Mechanic diagnose the issue and isolated the problem to be a bad VGT Turbo Actuator. I was there watching his software as we would unplug the VGT and all codes/faults would go "Inactive". Plugged it back in and every warning light and code/fault would go "active" again. After a new $1,300 VGT Actuator, truck performed a complete Regen and have not had a problem since. I guess it could have been worse, but problem solved. It's wild how ONE bad part could surge/lack power and freak out the Computer. Anyways, thanks for the help, as you were CORRECT with it being the VGT Actuator.
     
    EeeeZzz, Feb 21, 2019
    EeeeZzz, Feb 21, 2019
    #3
    Goodysnap Thanks this.
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