Your oil ash volume seems high. I think the max on the 3.0 TDi DPF is 0.54l. My 97k miles 3.0 TDi is 0.19l. The question is the 0.4l value true or due to a dodgy sensor?

 

Thanks for your reply, mine's done 188k miles ... do you know which sensor could be dodgy if it is sensor ...? Thinking of getting the DPF cleaned ... not sure if that will help ...

 

Decided to get the DPF gutted and ECU remapped to disable DPF and EGR for error 5585 - Diesel Particulate Filter (Bank1)
P242F 00 [039] -- Restricted/Clogged. However when DPF was removed it wasn't clogged rather it was looking ok. Just a bit of ash deposit which can be cleaned ... anyway, I think EGR is clogged as the flashing coil / limp mode only happens at slow stop and go traffic ... I'm a bit surprised that the error code refers to the DPF filter ... planning to clean the EGR and see if the problem still occurs ...

Very surprised that DPF filter condition is not bad providing that the car had done 192,000 miles .... I think this is mainly because 95% of this is motorway miles .... good for DPF, but doesn't help EGR much as carbon deposit in EGR doesn't burn out like DPF ... you only clog up DPF if you do a lot of city drive ...

 

I've been toying with the idea of cleaning my EGR. I found this useful(?) link.

Audi A6 2.7 & 3.0 TDi EGR & Intake system cleaning info please...

The bloke seems to use the Air mass specified value to gauge the amount of clogging.