[ainarssems]

It's fixed now and cost only about half of What I was expecting. I got the correct genuine Audi sensor on ebay for £38, I was not sure if garage will use part supplied by me but it was cheap enough to try and and I was looking at possibly saving a day of waiting between them diagnosing the fault and ordering and getting the part.

Monday morning around 9:15 dropped the car off, I was lucky that all 3 fault codes came back before I dropped off car so they could see all of them ( P2002, P2453 and P2454, that's bank 1 DPF below efficiency threshold, Sensor electrical malfunction and sensor implausible signal). Sensor was still in transit at this point. Garage said the car is going in with the next wave and they will give me a call when they find out more. Sensor arrived around 10am. Fast forward to after 2pm still no call from garage, I was going to post office to send a parcel so took the sensor with me and on my way back from post office around 3pm stopped by the garage to see how they are doing.

Apparently they had car hooked up to computer, checked faults and could see sensor and DPF faults, they were thinking DPF is fine, just the sensor faulty but they were not sure so they had sent off data to Audi and awaiting response from Audi and was going to hook up car to computer in 30 min time and see what response they got from Audi and call me as soon as they find out. At this point I say I have original Audi sensor in my pocket if they are happy to use it and save the waiting time ordering part, they were happy to take my part.

Back at home around 3:30pm I get a call from garage and it goes something like this:

Garage - As you know DPF sensor needs changing but it's a lot of work as it is on top of gearbox and we need to remove lot of stuff to get to it
Me - I know, that's why I am not doing it myself and took the car to you
Garage - The problem is there are 2 sensors, computer shows me it's faulty sensor but does not show which one
Me - It's bank 1 , I know
Garage - Which is bank 1?
Me - It's on the right hand side as you sit in the car, cylinders 1-4
Garage - It's a lot of work but we do not know exactly how long it will take or how much it will cost as computer does not show us time required for the job.
Me - Audi standard labour is 1.3 hours. When I first enquired about the job I sent you e-mail, not sure if you have seen it as I never got reply to email and just went to you to speak in person but there was instructions for the job attached as well, I can resend them if you like.
Garage - 1.3 hours? OK, it will be £99.96 all in
Me - Excellent, can you get it done today before closing, If not then I would prefer to take the car today because I need it tomorrow morning and will drop off again tomorrow.
Garage - We will try to get it done today.

About 5pm ( they are closing 5:30pm) I get another call - Unfortunately it's taking longer than expected as everything is seized so we will not get it done today, we will call you tomorrow morning when it's done.

Finally about 11am got a call today that it's done and I can pick up car. I was not sure if they are going to charge me more because it took longer but no, only asked for for £99.96 as quoted, invoice shows 1.55 hours ( I assume 1.3 for the job as per Audi standard labour +0.25 for the diagnostics) @ 59.50 per hour -£8.93 discount(???) +VAT

So all in all happy with the outcome, only cost me £137.96 even if it was a bit long winded process with the garage