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Thread: 2007.5 LMM Duramax

  1. #1

    2007.5 LMM Duramax

    I keep getting a code P2454 on my 2007.5 Duramax does anyone one know which sensor this is in my exhaust?
    Thank You

  2. #2
    Tuning Addict 5FDP's Avatar
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    The almighty google told me that it might be your EGR DPFE (EGR Pressure Feedback) sensor.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
    Sorry 5FDP l think your google is wrong it is a DPF sensor just have figure out which one.

  4. #4
    Tuning Addict 5FDP's Avatar
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    If it's not that I have read that is the DPF filter is clogged up it can set that code or the sensors is bad.

    On the exhaust there is like 2 tubes that run into the exhaust and into a sensor, 1 before and after the filter in the exhaust pipe. I think it's taking the reading before the filter and after to see the differential pressure between the two.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.