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Definitely need to get it scanned with VCDS to get the readings from the adblue components in order to determine what is wrong. I've replaced pretty well everything in the system, minus the tank, and I still get a countdown most times after having the adblue topped up.

Thats really good advice. Will look into it, and see if my mechanic can get access to that. Will report back. Cheers!

Yep, that's why I'm asking for experience in actually doing the repair. From other threads, the dealership recommends replacing the entire fueling system without investigation. Looking for experience on potentially testing and cleaning injectors and fuel rails instead of replacing? Does the...

For the last 110k km since I've owned it. Been maintained at the dealer until out of warranty, and then by my mechanic who is meticulous and very reliable. Will look to see if we can get the fuel tested. It about 5 weeks since it failed so might be screwed at his point.

Sorry typo. Fuel and oil filters changed ever 10K km

Always. Was super diligent with maintenance. Full oil and filter change ever 10K kms (manual says 16k). Never had anything look suspect. Most recent service was 5K km before the pump blew. Never with any consistency. Every once in awhile I'd use the shell v power diesel which is supposed to...

Mileage in the thread title (265k km/165k miles). Diagnosis: flashing glow plug light followed instantly by no power, and no start. Metallic dust found in fuel filter and in the screen after the fuel pump. Faults: P0087 fuel rail pressure fault P0263/P0278/P0269 injector faults Always...

Yea I was getting a little thrown off because I'm 90% sure the CBRB has a CP4.2. I know the CP3 conversion can be done. But from what I've read, there is a fair amount of modification required to make it fit.

Yep significantly less than ideal.

Joining the HPFP Grenade Club. Lucky me! Way over warranty, and understand that the recommendation is to replace everything in the fueling system. Has anyone had any experience not doing the full replacement? What were you able to salvage? Any advice is much appreciated.

Since clearing the codes. I've driven 5K kms issue free will see about replacing the injector on the next service.

Thank you. Will give it a try and see what we come out with.

Alright so this what came back from my scan this morning. As suspected the four faults that I had previously mentioned. Any thoughts? 6 Faults Found: 31036 - NOx Sensor 2 Bank 1 P22A1 00 [096] - Signal too Large Intermittent - Not Confirmed - Tested Since Memory Clear...

I've had it happen with third party DEF, dealership fill up, and at my independent mechanic. Can almost guarantee the codes will be P204f, P229F, P20EE, and P207F. They are all NOX catalyst/sensor faults.

100% good DEF my mechanic uses the OEM stuff from the VW to ensure that bad DEF isn't a factor

Inspection plus Fuel filter Cabin filter Oil change AdBlue top up And a couple other things I'm forgetting

Definitely agree. Will be looking into getting my own soon.

Taking it back to my mechanic tomorrow. I'll get the scan report from them and share here.

Just got the Treg back from a 260k km service. 300km driven, CEL, and adBlue countdown. Seems that almost every time the adBlue is topped up, it gives me a count down. Anyone have a similar experience?

Agree with everything Leroy said. Before I purchased my 2015, I spent a lot of time reading through the threads on this forum as well as Club Touareg which have some great info. I have still had issues come up with mine. General consensus would be to make sure you have a good independent...