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Thread: OBD Codes

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    Grassroots1964's Avatar

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    OBD Codes

    2016- 2500 stock all emissions intact with 106,000 miles.

    Went to the truck the other day, started it, and the following codes popped up.

    See attached sheet ( posted below ) for reference.

    I don't drive this truck very often ( around 5,000/ year ) & we live in the Dallas area, so temperature wise, she's hot outside.

    Not sure the lack of driving has anything to do with the codes, just information for the post.

    So they all seem to relate to the DEF/doser area of the truck.

    I tried to delete the codes, but since they are permanent codes, no such luck, as the repair must take place for them to disappear.

    Here is what I have tried.

    I climbed underneath to the DEF tank, and on top of the tank are the connections for the pump.

    I unplugged both, & cleaned the connectors with electronic cleaner, put it back together, and started her up.

    Low and behold, the CIL went off.

    I thought the day was saved...but that was short lived. 10 minutes into my drive the CIL came back on, so i ran another code check which is attached.

    Same codes popped up.

    So, I have 2 questions.

    Does anyone think it is a faulty DEF pump ( things seem to point that way ) or something else I should check that may be the cause I am missing?

    I usually take it to Texas Diesel Power in Weatherford, TX, https://texasdieselpower.com, but didn't want to drive over there since it was such a haul, & if it kicked me in limp mode, that would suck driving slower than a tricycle moves!

    I did call them and they are the ones to suggest to make sure the connections were good.

    If y'all are around the Dallas area or beyond, & you don't know who they are, check them out.

    John, the owner races in NHRA with his top fuel CUMMINS powered diesel!


    Not sure the attachment came through so I posted codes below: Trying to get it fixed if there is a simple solution.
    rt
    2016 Ram 2500 L6, 6.7L; Turbo
    VIN: XXXXX
    Odometer: 105,828 miles
    1 Confirmed Code
    P208D Reductant Pump "A" Control Circuit High 1 Pending Code
    P208D Reductant Pump "A" Control Circuit High 6 Permanent Codes
    P203C Reductant Level Sensor "A" Circuit Low
    P208D Reductant Pump "A" Control Circuit High
    P208A Reductant Pump "A" Control Circuit/Open
    P204C Reductant Pressure Sensor Circuit Low
    P202B Reductant Tank Heater Control Circuit Low P205D Reductant Tank Temperature Sensor Circuit High


    Last edited by Grassroots1964; 06-10-2020 at 03:01 PM. Reason: Not sure the attachment was included.

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    TH-64's Avatar

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    Re: OBD Codes

    They mysteriously disappear.

    Sent from my SM-G950U using Tapatalk

    2012 CCSB Saddle Brown Pearl... DRD tuned

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    Grassroots1964's Avatar

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    Re: OBD Codes

    I was concerned they would not go away.

    Thanks for the response.

    Were you able to see the attachment with the codes listed?

    I went back and edited and posted them directly in the text.


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    TH-64's Avatar

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    Re: OBD Codes

    We should ask the pro to be certain @DRD.

    Sent from my SM-G950U using Tapatalk

    2012 CCSB Saddle Brown Pearl... DRD tuned

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    Grassroots1964's Avatar

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    Re: OBD Codes

    Thanks.


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