2014 Q5 TDI post fix issues O2 Sensor check engine
 

Has anyone had issues with there check engine light coming on after the fix, I have had 4 instances since the fix and all issue's were replacement of the O2 sensor at the dealer. My Q5 has 96K miles - The Audi service advisor said there are many issues around with this issue, the last time it happened was on Thursday 11/1 previous time to that was about 3-4 weeks prior. My appointment is for this Thursday my assumption is that it is another O2 issue.
Just wondering how many of you are experiencing this same issue. Thank you

I have had mine replaced once since the fix, but it has been good since then.

Do you mean to say that they have replaced your O2 sensor 4 times?

actually it's been a total of 3 which includes when they replaced the sensor during the fix, if they replace it again on Thur then it will be 4 times. Last time I went they submitted a ticket to Audi due to the fact that they replaced it so many times.

I had two replaced two weeks ago, and the engine light came back on the way home from the dealer. Now in shop for replacement of a NOX sensor. Hoping it will be resolved.

Yup, seems to be a bunch of us have had that . . . I asked my service adviser to look into it but have not heard a peep. I need to bug him again . . .

My wife's 2015 TDI just threw another code yesterday. I checked it when I got home and found the following:

Address 01: Engine Labels: 059-907-401-V2.clb
Control Module Part Number: 8K5 907 401 AC HW: 4G0 907 401 E
Component and/or Version: 3.0TDI FSA H14 0008
Software Coding: 2A2A4012053603050000
Work Shop Code: WSC 03984 002 1048576
ASAM Dataset: EV_ECM30TDI0118K5907401AC 002008 (AU48)
ROD: EV_ECM30TDI0118K5907401AC_002.rod
VCID: 71E3D3BFA0C37AC22A-8025
1 Fault Found:

24383 - Oxygen (Lambda) Sensor B1 S1
P0133 00 [237] - Response too Slow
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 7
Mileage: 62110 km
Date: 2018.10.20
Time: 07:28:09

Engine speed: 1055.50 /min
Normed load value: 0.0 %
Vehicle speed: 52 km/h
Coolant temperature: 88 ∞C
Intake air temperature: 17 ∞C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.400 V
Unlearning counter according OBD: 40
Engine status: COENG_RUNNING
Engine status-Test_Program_Co Eng st COMPU VERB UBYTE: 3


Readiness: 1 1 0 0 0

Car has just over 39K miles. I'll be calling my favorite SA as soon as they open this morning ...

Just recvd results my car needs exhaust gas temp sensors not an O2 Sensor, they had to order the part(s) should be in tomorrow made an appt for Monday for them to do it, Free of charge due to extended diesel warranty.

Post Fix, I have had 4 error check engine lights come on all related to the particulate sensor. The last one required replacement of the particulate filter. It was odd as right before the last time the check engine light came on, the car went through a full tank of Ad blue where the Ad blue warning light came on only 700 miles since the prior fill up. After the light came on warning 1000 miles, I drove another 300 and the warnings were showing AD blue almost empty where the car will not restart. I have gone 2000 miles since replacement of the particulate filter, all seems to be well- a tad better mileage after the particulate filter was replaced. I hope that it is not a recurring issue. 2014 TDI with 82K miles.

Correction, back in August I had two sensors with errors on VCDS report, but service department replaced one after diagnostic.

Got my vehicle back from service department yesterday where they replaced the NOX sensor. They had to get part shipped in hence drop-off on Monday, pickup on Thursday. Below are my three relevant TDI servicing starting with the TDI fix.

The TDI fix was done at 57,658 miles, the O2 sensor at 61,730 miles, and the NOx at 65,143 miles.
https://cimg2.ibsrv.net/gimg/www.aud...9c70d48959.jpg
https://cimg8.ibsrv.net/gimg/www.aud...5a78b06f89.jpg
https://cimg8.ibsrv.net/gimg/www.aud...c44fe5f202.jpg

Yes it's unfortunate that dealer invoices don't show any detail of the $$.They've pocketed a lot of cash replacing Nox sensors outside the new warranty.I've seen bills as high as 2K for a job that should cost max $500.VW Touaregs seem to eat them faster than Q5s ?