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Thread: Dtc po374

  1. #1
    Join Date
    Jun 2000
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    Morrisville, VT, USA
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    2,399

    Default Dtc po374

    Have an Ontario friend with this code on his late-04 DM. I've foregotten the model that followed the LB7, but that's the one.
    I looked up the code, but it doesn't tell me anything specific, just that it's a position code.
    Can anyone give me some detailed info to pass on?
    Thanks, DW
    2008 Jaco Seneca 35' motor home (Kodiak 5500 chassis). Pulling 18' Wells Cargo enclosed trailer, with 2016 Miata in it.

  2. #2
    Join Date
    Apr 2001
    Location
    CA
    Posts
    13,573

    Arrow

    P0374 - No high resolution signal 1 pulse (to the PCM/FICM). Could be the crank position sensor, its connectors or harness. Less common would be the reluctor wheel failure (loose or worn/damaged).
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  3. #3
    Join Date
    Jun 2000
    Location
    Morrisville, VT, USA
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    2,399

    Default

    Thank you.
    Couldn't get back on TDP on my phone, which was how I posted this, last week.
    Haven't heard back from my Ont. friend, so, I'm guessing that your answer has sent him in the right direction.
    Anyhow, thanks again.
    DW
    2008 Jaco Seneca 35' motor home (Kodiak 5500 chassis). Pulling 18' Wells Cargo enclosed trailer, with 2016 Miata in it.

  4. #4
    Join Date
    Mar 2000
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    Loyal WI US
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    10,792

    Default

    Also if there is an inline harness box (Edge Juice etc) be sure to remove it.
    Kennedy Diesel-owner
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