AnthT_A6

Sorry, yes, I should have posted about it.

turned out it was a sensor that had failed (not the one I thought it was) 

the garage said it was a boost control sensor, but that is the only info I have

Thanks again Steve

yes, I’ve since found that out. I work for Jaguar Land Rover, our version control in part numbers are different, I didn’t think outside my box 😄

The car is in getting a new sensor, hopefully this enables a DPF regen and fixes the issue 

The plot thickens.
The sensor appears to be the wrong one, it’s 059906051B and it should A.

We have owned the car since 2016 and never had any problems.

It’s odd that we have the wrong sensor, almost feels like someone deliberately swapped it.

brilliant! Thanks Steve 

that one thing I can tick off the list

im really surprised that Audi left a pipe connected (the little 90 degree pipe)

Thanks Steve

That’s interesting.

Before covid, the car did mostly motorway miles, now that I mostly work from home, I’m doing shorter journeys.

I have a feeling it’s actually a DPF issue and maybe the previous owner had something done to trick it.

im going to give it a long steady trip up the motorway, see if it makes a difference.

I’ll also continue to investigate and find out why it’s not connected 

I can’t see anything it would connect too

very strange

I've got an intermittant low boost fault on the Audi A6 (p0299 issue)

While poking about, I noticed this Air pressure sensor was missing its fixing bolt. I tried to put a bolt in, but it seems to be cross threaded (hence the cable tie) 
The other odd thing, the sensor seems to only have one pipe plumbed in. One pipe looks like it goes into the dpf, the other is not connected to anything.

surely this can't be right

By any chance does anyone have an A6 and could have a quick look?