DPF Error P2002: 3.0 TDI CCWA Fix

This morning, the car suddenly went into limp mode (in a 30 km/h zone). After turning the ignition on and off, it was gone again, but then it happened again on the highway .

I took a quick look tonight:

Code:

Adresse 01: Motorelektronik       Labeldatei: DRV\059-907-401-V1.clb    Steuergerät-Teilenummer: 8R0 907 401 J    HW: 8K1 907 401 A   Bauteil und/oder Version: 3.0TDI EDC17  H13 0008                  Codierung: 0114002C240F0120 [...] 3 Fehlercodes gefunden: 4698 - Funktionseinschränkung durch empfangenen Fehlerwert           U1113 00 [032] - -           Sporadisch - unbestätigt - geprüft seit letzter Löschung 4699 - Funktionseinschränkung durch empfangenen Fehlerwert           U1113 00 [032] - -           Sporadisch - unbestätigt - geprüft seit letzter Löschung 5182 - Partikelfilter Bank 1           P2002 00 [096] - Fehlfunktion           Sporadisch - unbestätigt - geprüft seit letzter Löschung              Umgebungsbedingungen:                     Fehlerstatus: 00000001                     Fehlerpriorität: 2                     Fehlerhäufigkeit: 2                     Kilometerstand: 159055 km                     Datum: 2017.06.01                     Zeit: 08:58:26                     Motordrehzahl: 1465.50 /min                     Normierter Lastwert: 71.4 %                     Fahrzeuggeschwindigkeit: 33 km/h                     Kühlmitteltemperatur: 42 °C                     Ansauglufttemperatur: 24 °C                     Umgebungsluftdruck: 960 mbar                     Spannung Klemme 30: 13.900 V                     Verlernzähler nach OBD: 39                     Kurbelwellendrehzahl: 1465.5 /min                     Fahrzeuggeschwindigkeit: 31.86 km/h                     Abgasvolumenstrom Partikelfilter: 160.1 m³/h                     Partikelfilter: Differenzdruck: -53 hPa                     Partikelfilter: Rußmasse berechnet: 20.35 g                     Abgastemperatur nach Vorkatalysator: 102.3 °C                     Ansauglufttemperatur: 24.0 °C Readiness: 0 0 0 0 0

Okay, so here's the translation:

"Now the question is: Last Friday, while I was driving, the first exhaust clamp came loose, and the exhaust parts ended up scraping along the road for a while. I had it towed to the workshop using my mobility guarantee, and they installed a new clamp, which fixed the problem."

Today, we're dealing with the issue described above. Could something have come loose, or could some sensor cables have been damaged? The first exhaust section, which includes the DPF and manifold, probably doesn't like being suddenly tilted.

Where should I look now?

Hi,

at

Quote:

Particle filter: Differential pressure: -53 hPa

If the exhaust gases were flowing backward through the exhaust system and back into the engine, I would first check the plausibility of the readings from the differential pressure sensor.

Best regards, Rainer.

dieselschrauber wrote:

Therefore, I would first check the measured values for the differential pressure sensor for plausibility.

I already tried that, but it was completely wrong, so I bought a new DD sensor and took a closer look at it tonight (while using a replacement car in the meantime).

Result: The measured load value was approximately 6g, while the calculated value was 42g.

Okay, I've cleared the errors and attempted a forced regeneration.

I was unable to start the regeneration process in the way described in the document, because it always requested "access permission," even though the code had been entered under "Security Access" (VCDS only displays the code for regeneration when the vehicle is stationary). And contrary to the description for V6 CR UDS, I have always needed that code for service regeneration; although sometimes it would display "No seed from the control unit." It's all quite unstable.

Using "Security Access" and then "Default Settings," I was able to start the service regeneration process successfully each time. The process would then run for approximately 10 to 15 minutes, during which the calculated value decreased to around 24.5g, while the measured value dropped to 1.6g.

BUT: Every time after that, there was an error in the MSG, and the calculated value would again be above >40g .

It seemed more like the forced regeneration was being interrupted, and I suspect VCDS might be involved. Every time, the advanced measuring values would go to "n/a," and almost simultaneously, the regeneration process would end. You also had to re-enter the control unit each time. However, the laptop is a fairly new Zenbook with Windows 10 and USB 3.1...

Can't I just simply delete that stupid calculated value? Or how do I start the regeneration process in CCWA?

Update: I tried the regeneration while stationary again using the current beta version of VCDS - and this time it worked. In the beta changelogs, there was something about a "HID Power Management Fix" for Windows 8 or later; I think that's what fixed it.

The car is running like a rocket again .

Thank you for the feedback!