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Thread: 2.0 FSI P1403 Regulation Deviation

  1. #1
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    2.0 FSI P1403 Regulation Deviation

    Hi all,

    For a while now I've been getting the occasional check engine light relating to the EGR system. Up until now I've just been clearing them to see what happens - normally the reappear after a few months so not a big issue. They normally come on while driving, however last week one came on immediately after start. Since cleared and has not come back, but the freeze frame data was a bit strange.

    P1403 - 008 - Regulation Deviation - Intermittent - MIL ON

    Freeze Frame:
    Fault Status: 10101000
    Fault Priority: 0
    Fault Frequency: 71
    Reset counter: 255
    Mileage: 0 km
    Time Indication: 0

    Freeze Frame:
    RPM: 10200 /min
    Load: 100.0 %
    Speed: 255.0 km/h
    Temperature: 215.0C

    Has anyone had this code for this engine, if so is the only way to fix it replacing the EGR valve?

    Cheers,
    Michael

  2. #2
    Join Date
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    According to the Ross Tech info, looks like you are up for either the N18 valve or possibly a new complete EGR valve.

    The N18 is quite a common failure and causes EGR errors, so you might be lucky with just having to replace this.

    17811/P1403/005123 - Ross-Tech Wiki
    Last edited by Lucas_R; 23-03-2020 at 12:04 PM.

  3. #3
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    Have you taken the top off the EGR and looked at the plastic gear in it ?
    Mine was quite worn in one quadrant. I took it out turned 90degrees and put it back in.
    MK4 GTI - Sold
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    MK5 Jetta 2.Slow - Until it dies.

  4. #4
    Join Date
    May 2016
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    Checked the gear today, seems fine. Will have to look into it more.

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