Audi A6 2.0TDI PD, Regeneration alle 50KM + Rauchentwicklung | Posts 16+

Hi,
If you adjust the "ash content" values using the adaptation channel and express them in terms of Tkm, you won't see those values reflected in the adaptation values; they will always show as 0. That's how it works. You can only see the ash content value that was entered in the measurement blocks or the extended measurement values.
A single regeneration cycle may not necessarily be visible as an increase in ash content. For example, I observe an increase of 1.5 g over a distance of 6000 km, and that includes somewhere between 10 and 20 regeneration cycles.

I'm interested (your MSG is different from mine).
- an overview of the possible customization options (Screenshot);
- an overview of the possible default settings (Screenshot);
- the current state of the DPF, i.e. Measurements for (these may be grouped in your MWB files, and all the visible data are from me).
text
Particulate filter: Time since last regeneration 8696 seconds.
Particulate filter: Oil ash volume 0.05 liters.
Particle filter: Calculated soot mass: 12.49 g.
Particle filter: Measured soot mass: 2.88 g
Particle filter: Kilometers since last regeneration: 126816 km.
text
Particulate filter: Fuel consumption since last regeneration: 7.35 liters.
Loading limit for field regeneration: 23.49 g.
Loading limit for service recovery: 40.0 g.
Loading limit: Overload 50.0 g.
Vehicle mileage: 72,257 km.
Particle filter: Oil ash content 20.9 g.

- What exactly you did immediately after the DPF replacement, and what you've done since then, including the approximate number of regeneration cycles and the kilometers driven.

hg
Herbert.

I believe we'll make the most progress if we consider the following idea further:

1. D2 replaced the original DPF with a (as I understand it) non-OEM DPF.
2. No one can comment on the quality of the replacement part now (but your descriptions suggest that something might not be quite right with it).
3. The first thing I think we should check is the maximum differential pressure. How high is it? If it's higher than reference values (we need to find those together), that's not good. However, I suspect it might be lower. Then I would assume that the problem lies there.

The non-OEM manufacturer probably installed some cheap, mass-produced component there that lacks essential qualities.

3. : 324 mbar, see above. Post 1

324 mbar is too high for the standard operating pressure of this engine. How can we determine whether the cause is the DPF itself or excessive soot buildup or excessive soot production from the engine?

Perhaps it's also a differential pressure sensor?

@ Roetty - Is this part original, according to...? Have you selected the Audi parts catalog (AKTE) for the specific vehicle/engine?

hg
Herbert.

@Herbert: I bought the DDS from WM Autoteile, providing the HSN/TSN. I can.
But also, double-check the Bosch part number. However, the performance is noticeably decreasing.
If it's heading towards 50 kilometers.

Sincerely,
Michael.

Hi Roetty,
Your East Asian DPF is a potential candidate for the problem, but it's not conclusive. And we don't want to encourage you to start replacing parts without a clear reason. That's why we all have these questions.
The sensors, including the differential pressure sensor, temperature sensor, and lambda sensor, should be restored to their original condition, meaning parts should be sourced from and not selected by the customer from a mail-order company.
Okay, ich bin bereit. Bitte gib mir den deutschen Text, den du übersetzt haben möchtest. Each of us, on our own path, is trying to get closer to the actual problem (even if the questions seem not to fit together at first).
hg
Herbert.

Okay. I'll get back to you with the information.

Good night & all the best!

dieselschrauber wrote:

Hi Is the correct differential pressure sensor installed? The high pressure differences could theoretically be caused not only by excessive Russian loading, but also because the wrong sensor with an incorrect measurement range is being used. Best regards, Rainer

Hello Rainer,

The error appeared even with the original DDS. I replaced it as a precaution, but unfortunately, it didn't improve the situation. I actually uploaded a photo of the new DDS.

VG Michael.

It doesn't look original, because if it were, there would be a VAG part number on it... of course, that doesn't necessarily mean it's not the correct part, or even a fake.

You might be able to get a similar vehicle from somewhere to use for testing. It's easy to switch around.

Best regards, Rainer.

Okay, I once helped someone with a "Belkannt" when they were having problems. After a brief search, the conversation turned to the DDS (Digital Display System) that they were replacing. They had bought it "somewhere" online. It had the same two mounting holes as theirs. The original one that was in the trunk only had one. The sticker on it makes me suspicious.

I would really try to find someone within my circle of acquaintances who would be willing to participate in a cross-exchange. Perhaps it will save time.

And one more note about the differential pressure sensor: On the BRE engine, there are two hoses connected to the DPF, one before and one after the filter element.

If the hose "after the ceramic filter" were corroded or leaking (also check the tubes to the DPF), you would also measure excessively high pressure differences, because the pressure in the exhaust system is certainly higher than the ambient pressure.

Best regards, Rainer.

Topic closed.

What was the solution to the problem?
hg
Herbert.

You have a private message.

It would be incredibly helpful for others if threads ended like this.