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Adblue error A6 Ultra

  • 29-10-2018 8:10pm
    #1
    Silane
    Registered Users, Registered Users 2 Posts: 176 ✭✭


    Hi All,

    My car is a 2014 Audi A6 2.0TDI Ultra.

    I refilled my adblue last Tuesday. Using about 2 litres of old adblue I had laying around, and 10L of new adblue from Halfords.
    On Friday on the motorway I got an error " Adblue system fault, no restart 1000km"
    I did a fault scan when I got home and the engine control module had a trouble code logged " P204F00 - Reductant System Performance Bank 1 static". I cleared this error and bought some more adblue and filled the tank right to the top. I drove the car around for a while but the Adblue fault countdown continues, I'm at 750km now. The trouble code has not returned on the engine control module.
    I also tried a hard reset on the Reductant control module, that didn't help. I pulled the fuse out for the engine control module and reductant control module for a few hours to see if that reset anything, it didn't.
    I can't find any adaption's that I can reset to fix the issue. Does anybody have idea's?


Comments

  • #2
    scannerd
    Registered Users, Registered Users 2 Posts: 236 ✭✭scannerd


    Some guidance on the VW reset process in the link

    http://i193.photobucket.com/albums/z10/ramairetransam/null_zps5f379092.jpg

    Has you car had the notorious software update, some are reporting issues after that.

    Hopefully you just need better / oem scanner to do full reset, don't find the pull the fuse reset works as much on newer cars.


  • #3
    ifElseThen
    Closed Accounts Posts: 348 ✭✭ifElseThen


    I had this issue in Sept, fixed in main dealer. They didn't really explain what they fixed, so guessing it was a resetting via software.

    Happened again last week. I got AdBlue from Halfords and it didn't reset.

    VW dealer told me shop/garage may not be up to the spec, which I found odd given it's urea etc.

    Am now out of warranty so will have to cough up this time.


This discussion has been closed.
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