Hello ive been a member for a few years but have only recently come back onto the audi scene.
I've just purchased a A4 B8 2.0tdi 143 DPF avant and the other day the emissions control light came on, so i drove the car in regen mode and it went out, however two days later it came on again, I plugged it in and it came up with a fault of exhaust pressure sensor. I was looking through my books and service history and noticed the car had a DPF pressure sensor fitted oct 2011 at a audi dealership so I rung them and they confirmed this at that i may be able to get it replaced under warrenty but that there are two pressure sensors on the DPF so could'nt say for sure if it was the one they replaced without doing a diagnostic them selves at a cost of £103! for them to tell me what i had already told them! ive been doing a little research and it appears there is only one pressure sensor and three temp sensors so i'm wondering if theyre trying to pull a fast one???
any advice/help will be greatly appriciated