25-03-2012,03:51 PM
If it helps, this is the one mechanical problem my A6 had, and it just needed a new G450 sensor fitting and calibrating. If you have VCDS you can see the ash content in the DPF and the last time a regen happened, which might give you a good idea of whether it's just a failed sensor or a blocked DPF.
Good luck!
MF.
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Gone: 2016 A6 Saloon BE Ultra S tronic - Floret Silver, Tech Pack Advanced, Parking Pack Advanced, Heated F+R Seats & Wheel, Electric Seats, Matrix LED, Ambient Lighting, Speed Limit Display, Twin Spoke 20", Folding Memory Mirrors
Now: E 53 AMG 4MATIC / Q5 2.0TFSi Prestige