Exhaust Pressure Sensor BMN

EDIT Mod: Topic branched off from https://community.dieselschrauber.org/en/viewtopic.php?t=23802.


Hello diesel mechanics,

Two days ago, I was driving my G5 GTsport (engine code BMN) on some bumpy roads, and suddenly the warning light for the exhaust system came on!

The car was generally driving normally, but the DSG transmission was suddenly shifting very jerkily... especially when downshifting. It was very slow and felt like the gears were being engaged very gradually.

I read the error codes at home, but I attributed the error to the bumpy road and thought it might be a temporary contact issue, so I cleared the codes!

It was gone again until this afternoon... on the highway, the warning light for exhaust emissions came on again. I continued driving, and after another 15 kilometers, the warning light for the DPF also came on. I could feel the issue with the shifting again, and there were also brief interruptions in the acceleration - which was very noticeable because I was using cruise control!

Okay, I've reviewed it again and here's the result:

Code:

Montag,30,April,2012,18:50:23:16637 VCDS Version: RKS 11.11.2 Datenstand: 20120130 -------------------------------------------------------------------------------- --------------------------------------------------------------------------------                 Adresse 01: Motor       Labeldatei: RKS\03G-906-018-BMN.clb    Steuergerät-Teilenummer: 03G 906 018 FB    HW: 03G 906 018 FB   Bauteil und/oder Version: R4 2.0l PPD1.2 G    1154                  Codierung: 0000078             Betriebsnummer: WSC 01392 785 00200                       VCID: 6AD0B6074564C83 1 Fehler gefunden: 001139 - Drucksensor 1 für Abgas (G450)                P0473 - 006 - Kurzschluss nach Plus - Sporadisch - Warnleuchte EIN              Umgebungsbedingungen:                     Fehlerstatus: 10100001                     Fehlerpriorität: 1                     Fehlerhäufigkeit: 254                     Verlernzähler: 40                     Kilometerstand: 59572 km                     Zeitangabe: 0                     Datum: 2000.00.00                     Zeit: 20:18:39              Umgebungsbedingungen:                     Drehzahl: 1536 /min                     Drehmoment: 120.0 Nm                     Geschwindigkeit: 0.0 km/h                     Spannung: 13.90 V                     Kilometerstand: 40 km                     Text:  240    C                                    Druck: 1448.4 mbar

- Is the person with the name 03G 906 051 A also responsible?

- Does this error disable the DPF regeneration process, or how does it explain the sudden appearance of the warning light?

- Does this have any impact on the transmission control unit (TCU) map? Just for your information, there are no error codes stored there.


Thank you very much for your help!


Best regards, Alex

Edit: 1. The error was the same the first time, 2. This is the sensor with this part number that is also installed in my car!

Quote:

- Is the friend with the name 03G 906 051 A also the culprit?

Yes, it should. The new name is --> 076 906 051 A.

First, fix this error, then proceed.

Autoservice wrote:

Is the friend with the name 03G 906 051 A also the culprit? Quote: Yes, it should. The new name is --> 076 906 051 A. First, fix this error, then proceed. Will be ordered tomorrow

.

Sure, you're welcome!

Best regards, Alex.

Update:

Since my car still has a worldwide warranty, and I obviously wanted to handle it through that, I went straight to the VW service center here in Graz on Wednesday.

Okay, I accepted the offer, explained the problem, and left the car there. Then, just to be safe and to inform him beforehand, I contacted the salesperson who connected me with the car.

The car was ready on Thursday... the sensor was replaced, the DPF was regenerated... AND:

MSTG updated to software version 4356!

I've already driven about 300 km, but I haven't been able to notice any real differences yet, neither in fuel consumption nor in top speed. I need to drive a bit further to see any significant changes!

Regarding acceleration, I can say that it sometimes feels a little "gentler." It feels like the turbo boost builds up a moment later/slower, especially during kick-down situations on the highway. I even experienced a noticeable jerk once when shifting from 6th to 4th gear during a kick-down. However, that's been the only thing I've noticed so far!

He's likely very close to achieving top performance... I'd be happy to create some logs if anyone is considering doing such an update, or simply wants to know where the actual differences lie.

The shifting problem has largely subsided, although it still seems a little slower to me (probably very subjectively) than it was before the exhaust system warning light came on!

So much from my side... if anyone would like to compare logs, I'd be happy to help - if there's any need for it .

Thank you, and best regards from Austria.

Alex.