After seeking advice I didnt tackle this job myself as the tiny alen key bolt that holds the sensor in can round off easily if it has been done up to tight if this happens the gearbox needs to come out for the bolt to be drilled out.. this along with the removal of the oil filter housing and...
Thanks Troubs12 for your reply.
I have just come across this which shows the position of the sensor behind the oil filter housing.
Total pain to get too.
https://www.myturbodiesel.com/d2/1000q/a6/oil-filter-housing-removal.htm 9th pic down.
My 07 Audi 2 litre TDI has been playing up a bit recently with the glow plug and engine lights coming on randomly with the odd stall and running quite rough when restart it (poss limp mode).
A friend put it on his VCDS for me and it comes up with the following error:
1 Fault Found