02830 - CAN-Extended Interface Control Unit for Driver Assistance Systems.

Hello!

Recently, I've been encountering the following error:

1 Error found:
02830 - CAN-Extended Interface Unit for Driver Assistance Systems
000 - - - Sporadisch
Freeze Frame:
Error Status: 00100000
Error Priority: 3
Frequency of Errors: 2
Lost Count: 191
Time: 0

In my 10/2010 Multivan Startline, since my last visit to the workshop, I have been experiencing this recurring error.
During the last visit, the dashboard was replaced, as the old one was malfunctioning and making random noises. The entire locking mechanism on the sliding door was also replaced. No other changes were made. Up until this visit, everything had been running smoothly and without any issues.

I seem to be missing the context. What does this error message mean?
I can erase it, but it then also disappears for a certain period of time, but suddenly reappears without any traceable events. I deleted the error entry, but it also did not reappear after a short drive. Clearly, the error reappears after the CAN idle, and this morning it was present again

Attached is a LOG.

Some time ago, I tried to upgrade the RPK, but unfortunately without success. The buttons, cables, etc. were wired according to the original wiring diagram, and the ABS control unit was re-coded with the help of Sebastian. However, the KI is unable to take over the RPK. The software version probably doesn't allow this. Now I have reverted the change to the ABS control unit, as I suspected that the ABS control unit wants to communicate with the now new KI (newer software) and that it doesn't work on the "RPK level". This is a guess.

I have already searched the internet for this error, and I found that there were many different possible causes. My error entry differs from the others in that there is no kilometer entry made, why?

Does anyone have an idea,

Greetings,

Peter

Hello,

As far as I can see, the error is an issue with the control signal to disconnect the CAN-Extended (CAN for driver assistance systems) from the vehicle's main network.
Only in your scan, are there no driver assistance systems that can be distinguished?

I would first compare the encoding of BCM and the combined instrument before the workshop visit with "now".

The encoding can be found, among other places, in old car scans, for example:

Quote:

... Address 09: Central Electrical (J519) Label file: RKS\7H0-937-08x-09.clb Part Number SW: 7H0 937 087 H HW: 7H0 937 087 Part Number: BCM T5GP H+4 H47 0256 Revision: BO047001 Serial Number: 0429 311120142 Encoding: B8A039BA0E212002012808106C8B8FD5009041AF60840000300000000000 Operating Number: WSC 00465 219 99999 ...

Best regards, Rainer

Hi!

This was the first thing I did. I'm keeping track of every scan and comparing them. There is also a scan approximately two weeks before the workshop visit, but everything is fine then.

The BCM was replaced a year ago. The problems persisted (some HVAC comfort functions were not working). Only a software update of the BCM to a version that is officially not allowed to be installed in Austria, but was installed in Germany in this type of complaint, resolved the problem. It worked flawlessly for almost half a year, but now there are problems.

Does the BCM have a problem? What should I tell the mechanic? I still have the warranty.

Greetings,

Peter

For your information!

Today, my T5 was once again picked up by the mechanic. The error described above has appeared repeatedly.

Subsequently, the workshop manager at VW inquired more specifically and found a solution. There is allegedly a file or code that can be uploaded to the BCM to fix the error.

Is this procedure familiar to anyone? Does anyone know what's being done here? Even the workshop foreman couldn't tell me anything more about it. He received something that he then writes into the BCM via the tester, but he doesn't even know what it is.

Have I heard this somewhere before?

Greetings,

Peter

Ps.: Among other things, efforts are being made again to silence the creaky chairs.

Hello and greetings!

Unfortunately, this visit to the workshop was unsuccessful. Even after installing the software sent by VW, the error could not be fixed. The error occurs when the CAN bus is put into a "sleep" mode, meaning after 20 to 30 minutes of complete inactivity.

What's a bit puzzling is the fact that the error doesn't occur when the BCM (Body Control Module) is in its original, out-of-the-box state, i.e., without the aftermarket control units like MFL, RNS510, ALWR, RFK, FSE, TV-Tuner etc. However, my T5 in its current configuration has been running error-free for more than a year. Although I have now installed the TV tuner, the error was already occurring before, and the installation has nothing to do with it.

The workshop manager suspects the diagnostic interface. The BCM was already replaced under warranty, and there were problems with the central locking system. The suspicion is based on the different software generations of the BCM and the diagnostic interface. The diagnostic interface is still the "old" one from 2010.

Is that really the case now? ... I can't verify it, and I certainly can't understand it. Do you have any ideas?

Greetings,

Peter

Hello!

Regarding "Diagnosis Interface". I have always been of the firm opinion that the diagnostic interface is integrated in the BCM. Am I wrong now?

Greetings,

Peter

Hello!

I've reviewed everything again, the diagnostic interface J533 is integrated into the BCM, as I also suspected. I was actually quite misled.

Fundamental Question:
If there are no other errors present, can I assume that the BCM is the source of the problem and that the error is not caused by another control unit?

Greetings,

Peter

I would consider the following criterion: The promised/purchased functions of the vehicle actually work or not.

Hello and greetings!

I would like to bring this issue back up, as I have not yet found a solution. The error occurs interestingly not always, but only intermittently. At the latest, however, after two to three days.

I have no idea where to start looking for the error.

With the request for relevant advice,

Greetings,

Peter

A slightly clumsy translation from Dutch:

Possible Symptoms: Unknown

Possible causes: The voltage supply voltage is not sufficient.
Tax module is not properly coded.
Incorrect tax module installed

Possible solutions:
Check the power supply for the control module.
Verify the coding of the control module (viewing automotive-specific diagnostic procedures)
Verify the CAN-bus powertrain cutoff relay (J788)
Check Measurement Blocks

Can you hear a tone when the relay is activated (J788)

Verify if the part number from the control module for this vehicle is correct.

Additional Information:
If found in a VW Passat (3 c): CAN-Gateway, Measuring Block 002.3 to check, when attempting to start the engine (this block should be active and inactive alternately)

How much of this can be applied to the T5 GP...?

Can this relay itself trigger the error?

Greetings,

Peter

First of all: I have absolutely no experience with T5. But perhaps the following might help, before you receive no answers at all:

From the Passat 3C, I know that there is a CAN disconnection relay that separates the CAN lines of the ACC radar sensor from the rest of the CAN when the car is stationary (I don't know whether the ignition is off or on).

According to internet rumors, the purpose of this disconnection relay is to protect against thieves who would otherwise have easy access to the CAN bus through the ACC (Access Control) module, and thus potentially steal the vehicle.

Do your ACC or other CAN modules that could be easily attacked from the outside? (During the scan, the rear camera caught my attention, but I don't know if it can also be disconnected. Do you even have this disconnecting relay, or can you hear it being activated via diagnostics?)

I don't know exactly when this error occurs. In principle, it would be possible to monitor the relay both on the coil side and on the contact side: either the relay does not draw any current when it receives voltage, or it draws too much current (coil side). Alternatively, the ACC eye detects the CAN signal even though the relay should be off, or the ACC eye does not report, even though the relay should be on (contact page).

You're saying that the error only occurs after the bus has been quiet. You might want to try paying attention to whether the error might be more related to how long the vehicle has been parked, as this could require a higher starting current and therefore further reduce the voltage.

Greetings
Guste

Hello!

Yes, the T5 GP has this separation relay, if a lane change assistant is installed. The relay disconnects the control unit J769 (control unit for lane change assist 1 (master)) and J770 (control unit for lane change assist 2 (slave)) from the CAN bus.
My T5 GP doesn't have a lane change assist system. The relay is controlled by the combination of J533 (Diagnostic interface data bus) and J519 (Power network control unit).

Interestingly, however, in SSP453 both control units are displayed as a single unit, but this does not reflect reality, as two control units are required for the T5 GP. The error is stored in the diagnostic interface J533, which is installed in addition to the BNS as a separate control unit. The coding of the diagnostic interface remained the same from the beginning, but the error appeared one day.

Are there more detailed documents regarding the coding of the diagnostic interface? The coding is only six digits and is 042200. And this encoding corresponds to the delivered state and has never been changed.

Greetings,

Peter

Hello!

It's important to mention this, and it makes things even more complicated that some additional features were added to my T5 GP. These included a tow bar with an original control unit, the MFL, the RNS510, an MMI, Rear-Assist, TV Tuner, RPK, ALWR and SWR; Everything had been working flawlessly for several years, until the BCM had to be replaced (July 2013), as the comfort locking function was no longer working sporadically. First, all keys were exchanged, then the BCM was updated, and finally, the BCM was replaced.

Here is the story of BCM in my T5:

29.12.2010 A0A0393A4E212012012000007C2B9ED40080410F60840000300000000000
22.01.2011 A0A0393A6E212012012800007C2B9ED50080410F60840000300000000000
14.07.2011 A0A0393A6E212012012800007C2B9ED50090410F60840000300000000000
28.07.2013 B8A039BA0E212012012800006C8B8FD50090660F60840000300000000000
29.09.2013 B8A039BA0E212002012808106C8B8FD5009041AF60840000300000000000
15.11.2014 B8A039BA0E212002012808106C8B8FD5009041AF60840000300000000000
17.08.2015 B8A039BA0E212002012808106C8B8FD5009041AF60840000300000000000
26.03.2016 B8A039BA0E212002012808106C8B8FD5009041AF60840000300000000000


29.12.2010
Address 09: Busbar (J519) Label file: RKS\7H0-937-08x-09.clb
Part Number SW: 7H0 937 087 D HW: 7H0 937 087
Part: BCM T5GP H+4 H47 0221
Revision: BO047001 Serial Number: 0347 235100043
Encoding: A0A0393A4E212012012000007C2B9ED40080410F60840000300000000000
Operating Number: WSC 02754 790 00000
VCID: 3564B2E725C7

22.01.2011
Address 09: Busbar (J519) Label file: RKS\7H0-937-08x-09.clb
Part Number SW: 7H0 937 087 D HW: 7H0 937 087
Part: BCM T5GP H+4 H47 0221
Revision: BO047001 Serial Number: 0347 235100043
Encoding: A0A0393A6E212012012800007C2B9ED50080410F6084000030000000000
Operating Number: WSC 02754 790 00000
VCID: 3564B2E725C7

14.07.2011
Address 09: Busbar (J519) Label file: RKS\7H0-937-08x-09.clb
Part Number SW: 7H0 937 087 D HW: 7H0 937 087
Part: BCM T5GP H+4 H47 0221
Revision: BO047001 Serial Number: 0347 235100043
Encoding: A0A0393A6E212012012800007C2B9ED50090410F6084000030000000000
Operating Number: WSC 02754 790 00000
VCID: 3564B2E725D1

28.07.2013
Address 09: Busbar (J519) Label file: RKS\7H0-937-08x-09.clb
Part Number SW: 7H0 937 087 H HW: 7H0 937 087
Part: BCM T5GP H+4 H47 0254
Revision: BO047001 Serial Number: 0429 311120142
Encoding: B8A039BA0E212012012800006C8B8FD50090660F60840000300000000000
Operating number: WSC 02756 790 50316
VCID: 397CBED7B0C587D0262

29.09.2013
Address 09: Busbar (J519) Label file: RKS\7H0-937-08x-09.clb
Part Number SW: 7H0 937 087 H HW: 7H0 937 087
Part Number: BCM T5GP H+4 H47 0256
Revision: BO047001 Serial Number: 0429 311120142
Encoding: B8A039BA0E212002012808106C8B8FD5009041AF60840000300000000000
Operating Number: WSC 00465 219 99999
VCID: 397CBED7B0C587D0262

15.11.2014
Address 09: Central Electrical (J519) Label file: RKS\7H0-937-08x-09.clb
Part Number SW: 7H0 937 087 H HW: 7H0 937 087
Part Number: BCM T5GP H+4 H47 0256
Revision: BO047001 Serial Number: 0429 311120142
Encoding: B8A039BA0E212002012808106C8B8FD5009041AF60840000300000000000
Operating Number: WSC 00465 219 99999
VCID: 397CBED7B0C587D69C3-806C

17.08.2015
Address 09: Central Electrical (J519) Label file: DRV\7H0-937-08x-09.clb
Part Number SW: 7H0 937 087 H HW: 7H0 937 087
Part Number: BCM T5GP H+4 H47 0256
Revision: BO047001 Serial Number: 0429 311120142
Encoding: B8A039BA0E212002012808106C8B8FD5009041AF60840000300000000000
Operating Number: WSC 00465 219 99999
VCID: 397CBED7B0C587E9691-806C

26.03.2016
Address 09: Central Electrical (J519) Label file: DRV\7H0-937-08x-09.clb
Part Number SW: 7H0 937 087 H HW: 7H0 937 087
Part Number: BCM T5GP H+4 H47 0256
Revision: BO047001 Serial Number: 0429 311120142
Encoding: B8A039BA0E212002012808106C8B8FD5009041AF60840000300000000000
Operating Number: WSC 00465 219 99999
VCID: 397CBED7B0C587F679-806C

I can, of course, not rule out the possibility of becoming completely blind, without awareness.
All renovations have been completed and are still proceeding without any issues. The CAN disconnect unit error only occurs.

Greetings and thanks,

Peter