2005 dt 466 fault codes. Anybody familiar with them

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by B77, May 29, 2020.

  1. B77

    B77 Light Load Member

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    14
    Dec 16, 2010
    0
    I got 10 fault codes:
    639_14 A. 5 with this number
    241.254
    228.254
    4:240
    255:254
    192:254


    2023-14p. 150:1 and 150:2 and 150:9

    25:2. 612_14p. And 1:240. 639_14p
    Any pointers will be appreciated.
     
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  3. Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    Looks like you are reading those from the cluster LCD display. Those are all body controller related with a lot of gibberish. 639-14 is datalink communication time out faults. 2023-14 is cluster losing communication with the engine. The codes you get from the cluster really shouldn't be used for troubleshooting and you need to get it properly scanned. Anything with a "p" after it is inactive. "A" is an active code. Not all active codes mean there is problem when the body controller is reporting it. This is why you need to get it properly scanned.
     
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  4. B77

    B77 Light Load Member

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    Dec 16, 2010
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    Correct, truck still doesn’t run. Was hoping for a lead where to look. Some are irrelevant yes.
     
  5. Heavyd

    Heavyd Road Train Member

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    During cranking, if you do not see any engine speed on the tach, the engine ecm may not be booting up at key on based on the codes you have there.
     
  6. B77

    B77 Light Load Member

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    Dec 16, 2010
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    That one stays on zero yes. Mechanic ended up with a defective ipr valve what didn’t got power also. But if the ecm doesn’t get power that valve doesn’t get power either
     
  7. Heavyd

    Heavyd Road Train Member

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    The ecm controls the ground side. The ipr gets 12 volts at key on from the same source as the throttle pedal. So 12 volts there doesn't mean the ecm is powered up. Check the main 40 amp fuse at the batteries and connections. Follow the harness up to the engine and check for any spots where it is rubbed through. There is another connection near the starter that may be corroded or melted.
     
  8. B77

    B77 Light Load Member

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    Dec 16, 2010
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    I followed the wiring up to the starter. But not what is on top of the starter yet. I am getting a guy with a laptop first
     
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  9. Heavyd

    Heavyd Road Train Member

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    Laptop is pretty much the first tool we grab anymore.
     
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