Help for the 3.0 TDI engine with code: ASB

Hello everyone,

I have a question about the engine in my Audi A6. It's the 3.0 TDI with the code ASB and an output of 171 kW.

Er hat jetzt 15000KM gelaufen und ich habe festgestellt das der Motorlauf im Stand etwas rauher und unruhiger geworden ist und vor allem klingt er immer mal wieder in Phasen wo er Gas annimmt richtig nagelig.Das alles jetzt seit ca. 4000-5000Km. Habe immer gedacht das sind Regenerationsphasen aber dann ist es immer häufiger geworden. Habe gerade mal mit VCDS gesehen das ich auch schon 627Km seit der letzten Regeneration gefahren bin. So, it doesn't come from that.
The error memory doesn't show anything either.
Do you have any suggestions on what I should check, or perhaps what it might be?
What personal experiences have you had?
I am grateful for everything.

Regards,

Tobi.

Hi,

Quote:

It has been observed that the engine runs

somewhat rougher and less smoothly when idling.
It would be best to check measurement block 13/14 for any significant deviations. If various temperature sensors are providing incorrect readings (measurement block 7? Please click to check), the engine noise may also change.
It's best to check all temperature readings for plausibility when the engine is cooled down.

Best regards, Rainer.

Thank you, Rainer, for the quick response.

So, the readings from measurement blocks 13 and 14 are all very close to 0.00 and differ by a maximum of 0.25.
I need to check the temperatures sometime soon, especially when it's really cold and I have a little time in the morning.

Regards,

Tobi.

Start the engine when it's cold (e.g., after being off overnight), use a diagnostic tool to connect to the vehicle, and then generate a log of memory areas 13 and 14.
Try to keep the engine speed within the range of 1200-1600 RPM. Drive/record data until the temperature reaches approximately 90 degrees Celsius.
Log in here.

Also, in addition to codes MWB 72 through 77 indicating 'ignition on/engine off,' please read the error codes and post them.

First of all, a big hello to everyone!

Regarding my thread, I'd like to offer a small apology to everyone who offered help (especially Rainer and vagtuning) for letting it linger for so long.

Ein kleines Update. Km-Stand jetzt 34090km also auch schon den 30000er Service hinter mir. Zu dem ursprünglichem Thema des Nagelns kann ich nur sagen das hat sich, auch wenn ich es garnicht sagen mag oder damit groß in Verbindung bringen will aufgehört nachdem ich zweimal den premium Saft von Aral und Shell getankt hatte. Komischerweise seit dem auch nicht wieder in dem Masse aufgekommen. II'm just doing this somewhat randomly.
The other issue is that a different problem arose. After the initial start of the day and subsequent driving, I experienced fluctuations in the engine speed within the first 1-2 kilometers, which were transmitted to the entire car. This "Shanghai taxi effect" was particularly noticeable when I was driving at a constant speed of 35 km/h in a 30 km/h zone, using the Tiptronic transmission, and then the torque converter lock engaged, creating a direct connection.The RPM fluctuated around 100-200 RPM, you can imagine how that feels in the car. I then mentioned this during the 30000 km service at the dealership, and they checked it out and contacted Audi about it.

Versuch 1: Audi ordnete einen doppelten ATF-Ölwechsel an um angebliche Verschlammungen raus zu spülen. KA SUCCESS!

Versuch 2: Audi ordnete einen Glykoltest der ATF an um einen Def. des Wärmetauschers im Getriebe und damit Kühlwasser im ATF aus zu schließen. TEST NEGATIVE!

Versuch 3: Audi ordnete daraufhin einen Tausch des Drehmomentwandlers an. Gesagt getan, und was sollte anderes bei rauskommen? NO SUCCESS!

Since then, I haven't yet spoken with about further steps.

The problem is most noticeable when the outside temperature is around 8-9°C. However, what I've noticed since the torque converter replacement is that, in my opinion, the transmission seems to stay in the torque converter mode for longer when I accelerate, and sometimes it exhibits completely different behavior than before the replacement. It feels much less smooth now. Previously, the Tiptronic seemed to keep the engine at lower RPMs, which made the whole system feel less strained.

The next thing is that, in my opinion, the fuel consumption has increased significantly. When the car was new or during the first approximately 15,000 kilometers, I never exceeded an average of 9.5 to a maximum of 10 liters per 100 kilometers, even when driving at full speed. Now, I hardly ever drive at full speed anymore and generally try to be quite economical, but since I noticed these things, I'm still getting the same fuel consumption.For example, when using cruise control at 180 km/h, I'm seeing an instantaneous fuel consumption of 13.5 liters, which is not like the 10-11 liters I used to see.
No software updates or anything similar were installed during the service; I've already checked that.
He still reaches the top speed just like before, so there's no lack of power.
I would be very grateful for any advice, especially regarding which specific types of medical devices could still be logged.
The running regulation values for MWB 13 and 14 are completely normal, all within the range of approximately ±0.XX.

That's all for now. It seems like it's already become quite a bit again.

Thank you all.

Best regards, Tobi.