MWB23: Cylinder readings -60 to -80

Hello everyone,

I just bought a used Volkswagen Passat 3C 2.0 TDI from July 2007.
Data:
- ICD-10 code: BMP.
- 107,000 km.
- Part number: WVW ZZZ 3C Z 8E 006*** (Please send the exact part number via private message if needed).

Symptoms:
- No driving restrictions, but MWB 23 is noteworthy: All cylinders are between -60 and -80.
- No performance issues.
- Consumption according to MFA is normal.

The vehicle is currently still at the dealer, undergoing its technical inspection (TÜV) and other checks. I can only pick it up next Saturday at the earliest. Therefore, further diagnostics will not be possible until March 1st.

After the diagnostic check, it appears there's an issue with the fuel supply. Does this mean I need to replace the diesel filter and hope for the best? Or is there definitely something wrong with the common rail injectors (PDE)? According to VW, the specification range is from +100 to -100, and since there are no apparent driving issues, I probably can't complain too loudly yet, right?

I don't know if the VW warranty is still valid. The vehicle was manufactured in June 2007 and is within the first two years of its lifespan, but it has a Danish registration document (although it has been running with German license plates since July 2007).

The log is located at: /viewtopic.php?p=145002#145002

Regards,
Sure.

Here is the translation of the text from German to English:

"Guste" means "gust" in English. It can also be used as a verb, meaning "to gust."

Negative values mean that, if I think about it logically...
that MSG shortens the cooking time...
This would actually suggest that there is not a shortage of fuel (DF).
'...especially since he would then have to extend the time periods!'

Here's the translation:

"To be upfront: I have no idea about MWB 23. Until now, I've only read about it here without understanding its exact function. In particular, I don't know on what basis the MSG calculates the values for MWB23."

You once wrote under /viewtopic.php?t=9888&highlight=mwb+023:

VagTuning wrote:

Perhaps someone can add to this, but here's a little bit for now: - Read error codes, and if necessary, clear or process them. - MWB 001 Field 2 (Target: 3.0 - 9.0 mg/h) - TURN OFF AIR CONDITIONING!! - MWB 004 Field 4 (-3 to +3 kW - allowable fluctuation of 0.5 kW). - Check the temperature readings from sensor MWB 007 for accuracy (cold vehicle with ambient temperature). - MWB 013 values fluctuating between -3.0 and +3.0 mg/H. (one or more fixed emitters with a flow rate of less than 3 mg/h). MWB 023: -100 to +100 (note that the range is from -60 to +60). (If the value is greater than -60, there is likely a fuel supply problem.) (For values > +60: Poor fuel quality or sticking injectors

).


Now you are writing:

vagtuning wrote:

Negative values mean that, if I think about it logically, it seems that the MSG is shortening the times...

doesn't that contradict something, or?

"I also read a quote from Steffen W, but I'm now unsure whether that was his own knowledge or if he took it from your original post."
And Steffen wrote under /viewtopic.php?t=20150#142080&highlight=23.

Steffen W wrote:

The MWB 23 is the BIP (Begin of Injection) regulation. It represents the delay between the activation of the PDE (Pre-Injection Device) and the actual start of injection. During this process, the current flow of the magnetic valves in the PDE is monitored by the MSG (Main System Controller). The target values for our 1.9 engines are +100 to -100. However, problems can definitely arise after the age of 60. Therefore, the memory is often cleared even though there are already significant disruptions in operation. The higher the positive value, the shorter the switching time. Conversely, the lower (or negative) the value, the longer the switching time. High positive values indicate a faulty pressure drop element (PDE), while high negative values suggest problems with the fuel supply.

Best regards,
Sure.

Here is the translation of the text from German to English:

"Guste" means "gust" in English. It can also be used as a verb, meaning "to gust."

You're probably right...
Yes, one should probably get some sleep before writing anything.
Then you can see that it's 23 and not 13...

I am tired; I'm going to rest.