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Thread: P10D1 code- L5P DMax

  1. #1
    Join Date
    Jan 2006
    Location
    South Milwaukee, WI
    Posts
    245

    Default P10D1 code- L5P DMax

    Just a heads up for those of you who have gotten the new L5P DMax with your 2017 P/U. I started getting code P10D1 and was experiencing constant Regens- as soon as one Regen would end, another would begin shortly after shutting down and later restarting my truck. The code would appear in my Edge diag monitor and without any intervention from me, would disappear on its own. No check engine indicator came on.

    Dealership tech said that this code applied to numerous possible faults- including the DEF system. GM has new calibration s/w for both the PCM and TCM. I had my truck reflashed- so far; it isn't going into continuous Regens (again, "so far".....)
    Last edited by chessy56; 09-11-2017 at 08:33. Reason: adding CE notification
    "Chessy56"
    So. Milwaukee, WI
    '01 2500HD, LB7, ~440K miles
    "Stock" engine. Dual fuel filtration system with Kennedy lift pump, BF Goodrich Commercial T/A Traction tires (sold to a dude from Texas- it's living a warmer life just fine down there now!).

    '17 2500HD, L5P (Happy Birthday/Merry Christmas to me!!!) Currently bone stock, 120K miles.

    "Socialism is a philosophy of failure, the creed of ignorance and
    the gospel of envy. Its inherent virtue is the equal sharing of misery."
    Winston Churchill

  2. #2
    Join Date
    Feb 2000
    Location
    Montana
    Posts
    11,382

    Arrow

    During the first 6 months, following the introduction of the Duramax in late 2000 (2001 model year), GM produced a number of ECM re-flashes to correct some problems that appeared once sufficient numbers of the trucks were in use. Narrowing/widening tolerance windows was a key area, as trucks were producing DTCs when they shouldn't or weren't producing a DTC when they should.

    Your report sounds a lot like that. The newest emissions system calibration matrix apparently needed some fine tuning. You did the right thing by taking the truck in for service. Constant regens couldn't be all that helpful....

    Thanks for the report.

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