J. Patterson

Hi guys. Found and bought a 2011 TDI Q7 for my wife and for towing my car to the track. We have been looking for months and this one showed up last weekend at our local dealer. 20000 miles Prestige. Teak brown. It's nice.
That said, in the first 100 miles an adblue warning popped up that it had 600 miles remaining . I was assured the tank was filled when I picked it up. I have VAG com and a scan shows----

3 Faults Found:
9050 - SCR NOx Catalyst Bank 1
P20EE 00 [096] - Efficiency too Low
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 33793 km
Date: 2012.09.13
Time: 10:48:20

9953 - Reductant Quality Performance
P207F 00 [237] - -
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 33793 km
Date: 2012.09.13
Time: 10:48:20

8787 - Sensor(s) for Internal Cylinder Pressure
P13E6 00 [096] - Implausible Signal
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 33693 km
Date: 2012.09.10
Time: 14:12:28

Readiness: 1 1 0 0 1

Taking it back in tomorrow. Service tech states that there is a software update that he needs to do.

So much for the 300 point CPO inspection :-/

I have not heard much about adblue pump problems. Any info you have would be helpful. TIA
Oh-- and a pic of the new ride.

J. Patterson

All fixed now. Replaced NOX sensor and loaded a firmware upgrade. All good. :-)

mikhelee

Just before installing the new air springs and compressor, the system died. During the time leading up to replacing the leaking OEM front air springs, the system was alive and well. The old compressor would come on and try and try to inflate the leaking OEM springs.

gazetobg

Which NOx did they replace, do you know?
the one behind the engine or the one under the car?

i have exact same codes on my 2012 Q7 TDI and i need to know which one is bad? which one is bank 1...
Any help will be appreciated.

J. Patterson

I do not know for sure. I assume it was the upstream nearer the engine being bank 1. That is how O2 sensors are labeled on my 2001 TT. The dealer techs did talk to Audi and told me that I was getting a new software update. The good part is that it has been perfect for over 7000 miles since then. Good luck with yours!

gazetobg

Thanks a lot.

coupegt87

She's Nice .....

I meant the car !