Hi guys need some help. Engine management light has come on took it to audi specialist they said said soot level is 17 so regenerated it. 3 weeks later its come back again. Took ot to same garage he said take it to audi dealers which i am scared of the bill. I took it to local garage and he said theres no sensor issues dpf reading fine put the dof cleaner in and 2 weeks later it come in again. Took it to another garage he seems to think its the egr cooler. The car drives perfectly no issues just engine management light its an audi a6 64 plate could someone please advise if you have experienced similar issiea or recommend anyone. Thank you in advance.
