i would be intrested as my dpf light on tonight lack of power turbo not kicking in then glow plug light flashing is this the way to go if so how much and where are you based im near heathrow...or could the egr be sticking worth cleaning out thanks steve b
Check the fault codes and see what it says first. EGR sticking will cause DPF issues amoungst other things.
By far the most common issue we see is an
Implausible Particulate differential pressure sensor reading. Check the reading (I think its MVB 67 in VCDS, I dont tend to use the number system on Autologic so I could be wrong) from differential pressure sensor is 0mb KOEO (key on, engine off) if it shows a value higher than 0 there is an issue, check pipes for blockage, and theres always potential for wiring issues but its usually the sensor. On some VAG engine management systems you can carry out an adaption for the sensor which is worth checking.
Once you are happy the sensor is reading OK,
At idle you will be idealy looking for a value in single figures (IE 1-9) anything more than 15mb and your looking at trouble starting.
At cruse it should be in lower double double figures, Idealy less than 30mb.
Also check the ash mass or particulate loading which will also be in MVB 67 or there abouts (if I remember correctly) Ash mass would ideally be below 50%, the lower the better. The VAS system will refuse to re generate over 90%, other tools can force re gen after this but theres a risk of fire from the heat produced. I have forced re gen at 155% Ash mass but its not advised.
If the filter is too overloaded to regenerate then there are some good gel cleaners to soften the soot prior to steam cleaning.........Or just remove it!
Some info here
Diesel particulate filters. « Lion Garage Hay on Wye
HTH
Steve.