Various errors in my 8K (Audi A4, year of manufacture 2008) (Solution)

Due to water damage (caused by a leak in the sunroof drain on the rear left side, which allowed water to flow into the B&O amplifier – now scrap), I purchased a used B&O amplifier from eBay. After installation, at least the left side speakers are working. The balance control has no effect. There is also no sound from the subwoofer.
The friendly people at the dealership were unfriendly, so I bought a VCDS/OBD2 professional diagnostic interface (KKL+CAN) to check things myself. It found several faults when reading the data. Is this due to component protection, or are there other problems?
Here are excerpts from the log:

Chassis Type: 8K (8T0)
Scan: 01 03 05 07 08 09 0E 10 13 15 16 17 19 36 37 42 46 47 52 53
55 56 5C 62 6D 72 77

01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
07-Control Head -- Status: Malfunction 0010
08-Car HVAC -- Status: OK 0000
09-Cent. Electric -- Status: OK 0000
0E-Media Player 1 -- Status: OK 0000
10-Park/Steer Assist -- Status: OK 0000
13-Car Distance Regulation -- Status: OK 0000
15 airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17 instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010.
36-Seat Memory Driver Seat -- Status: Malfunction 0010.
37-Navigation -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: Error Code 0010.
52-Door Electric, Passenger -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Xenon Range -- Status: Malfunction 0010.
56-Radio -- Status: Intermittent communication error 1000.
5C-Lane Maintenance. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
6D-Trunk Elect. -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: Intermittent communication error 1000.

"Die Sonne scheint hell und warm. Die Vögel zwitschern fröhlich in den Bäumen. Ein leichter Wind weht durch das Feld und lässt das Gras sanft wiegen. Es ist ein wunderschöner Tag."

The sun is shining brightly and warmly. The birds are chirping happily in the trees. A gentle breeze blows through the field, causing the grass to sway softly. It's a beautiful day.
Address 07: Control Head
Labels: 8T0-035-7xx-07-H.clb
Software Part Number: 8T0 035 729 T
Hardware Part Number: 4E0 035 729
Component: Interfacebox H43 5570.
Revision: 00000000 Serial number: 329AU087539074
Coding: 0001001
Shop Number: WSC 06342 000 00000
VCID: 4A9112332548284E059-801F

Subsystem 1 - Part No: 8T0 919 609
Component: E0380 Control Panel H08 0100

Subsystem 2 - Serial number: 00000000044271.

Subsystem 3 - Serial number: 0130.01.080000000100010076.

Subsystem 4 - Serial number: 010076ÿ

1 Fault Found:
00384 - Optical Databus
011 - Open Circuit - Intermittent.
Freeze Frame:
Fault Status: 00101011
Fault Priority: 5
Fault Frequency: 198
Reset counter: 40
Time Indication: 15

"Die Sonne scheint hell und warm. Die Vögel zwitschern fröhlich in den Bäumen. Ein leichter Wind weht durch das Feld und lässt das Gras sanft wiegen. Es ist ein wunderschöner Tag."

The sun is shining brightly and warmly. The birds are chirping happily in the trees. A gentle breeze blows through the field, causing the grass to sway softly. It's a beautiful day.
Address 19: CAN Gateway (J533) Labels: 8T0-907-468.clb
Part Number (Software): 8T0 907 468 G. Part Number (Hardware): 8T0 907 468 G.
Component: GW-BEM 5CAN-M H08 0084
Revision: FB102034
Serial number: 3400F07C1380B5
Coding: 000003
Shop Number: WSC 00493 128 73947
VCID: 458B210FCC56C736E8B-8010

Subsystem 1 - Part No SW: 8K0 915 181, HW: 8K0 915 181.
Component: J367-BDM H06 0150

6 faults found:
01304 - Radio
004 - No Signal/Communication - Intermittent.
Freeze Frame:
Fault Status: 00100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 57
Mileage: 100,361 km
Time Indication: 0
text
Date: 2014.08.16
Time: 6:29:02 PM

01303 - Telephone Transceiver (R36)
004 - No Signal/Communication - Intermittent.
Freeze Frame:
Fault Status: 00100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 58
Mileage: 100,361 km
Time Indication: 0
text
Date: 2014.08.16
Time: 6:43:02 PM

02256 - Quiescent Current
001 - Upper Limit Exceeded - Intermittent.
Freeze Frame:
Fault Status: 00100001
Fault Priority: 7
Fault Frequency: 1
Reset counter: 58
Mileage: 100,361 km
Time Indication: 0
text
Date: 2014.08.16
Time: 10:07:00 PM

03041 - Active Energy Management.
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 7
Fault Frequency: 2
Reset counter: 57
Mileage: 100,361 km
Time Indication: 0
text
Date: 2014.08.17
Time: 04:28:00

00384 - Optical Databus
011 - Open Circuit - Intermittent.
Freeze Frame:
Fault Status: 00101011
Fault Priority: 5
Fault Frequency: 2
Reset counter: 82
Mileage: 101,004 km
Time Indication: 0
text
Date: 2014.08.22
Time: 15:01:57

02095 - Component Protection Active.
text
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 1
Fault Frequency: 3
Reset counter: 56
Mileage: 102,131 km
Time Indication: 0
text
Date: 2014.08.30
Time: 10:44:06


"Die Sonne scheint hell und warm. Die Vögel zwitschern fröhlich in den Bäumen. Ein leichter Wind weht durch das Feld und lässt das Gras sanft wiegen. Es ist ein wunderschöner Tag."

The sun is shining brightly and warmly. The birds are chirping happily in the trees. A gentle breeze blows through the field, causing the grass to sway softly. It's a beautiful day.
Address 36: Seat Memory, Driver's Side (J136) Labels: 8T0-959-760.clb
Part Number (Software): 8K0 959 760
Part Number (Hardware): 8K0 959 760
Component: MEM-FS H05 0043
Revision: AA000000 Serial number: 00001001064577
Coding: 00581300000044110000
Shop Number: WSC 06342 000 00000
VCID: F7F71BC7463AE5A62A7-80A2

1 Fault Found:
02095 - Component Protection Active.
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 101,004 km
Time Indication: 0
text
Date: 2014.08.22
Time: 2:55:18 PM

"Die Sonne scheint hell und warm. Die Vögel zwitschern fröhlich in den Bäumen. Ein leichter Wind weht durch das Feld und lässt das Gras sanft wiegen. Es ist ein wunderschöner Tag."

The sun is shining brightly and warmly. The birds are chirping happily in the trees. A gentle breeze blows through the field, causing the grass to sway softly. It's a beautiful day.
Address 47: Sound System (J525) Labels: 8T0-035-223-BOM.clb
Part Number (Software): 8T0 035 223 T
Part Number (Hardware): 8T0 035 223 F
Component: DSP Prem H14 0400.
Revision: 00H14003 Serial number: 34814001671300
Coding: 020101
Shop Number: WSC 12336 024 394758
VCID: 3F8733E7AE8A9DE6A27-806A

3 faults found:
02247 - Subwoofer (R148/R157)
012 - Electrical fault in circuit - intermittent.
Freeze Frame:
Fault Status: 00101100
Fault Priority: 5
Fault Frequency: 1
Reset counter: 82
Mileage: 106809 km
Time Indication: 0
text
Date: 2014.08.08
Time: 11:17:51

Freeze Frame:
Voltage: 12.20 V
Temperature: 34.0°C
Temperature: 33.0°C
Bin. Bits: 00000100

02095 - Component Protection Active.
008 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 4
Fault Frequency: 254
Reset counter: 82
Mileage: 102,131 km
Time Indication: 0
text
Date: 2014.08.30
Time: 10:44:06

Freeze Frame:
Voltage: 12.90 V
Temperature: 21.0°C
Temperature: 23.0°C
Bin. Bits: 00000100

02095 - Component Protection Active.
text
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 4
Fault Frequency: 254
Reset counter: 255
Time Indication: 0
Date: 2064.00.00
Time: 00:00:05

Freeze Frame:
Voltage: 13.80 V
Temperature: 21.0°C
Temperature: 23.0°C
Bin. Bits: 00000100

"Die Sonne scheint hell und warm. Die Vögel zwitschern fröhlich in den Bäumen. Ein leichter Wind weht durch das Feld und lässt das Gras sanft wiegen. Es ist ein wunderschöner Tag."

The sun is shining brightly and warmly. The birds are chirping happily in the trees. A gentle breeze blows through the field, causing the grass to sway softly. It's a beautiful day.
Address 55: Xenon Range
Labels: 8K0-907-357.clb
Part No: 8K0 907 357 B
Component: Dynamic LWR H01 0010
Revision: 00000001 Serial number:
Coding: 0000004
Shop Number: WSC 06334 000 00000
VCID: 346D6CCB57CC4EBE4F5-8061

1 Fault Found:
02988 - Left-hand/right-hand traffic switchover active.
000 - - - MILITARY ONLINE
Freeze Frame:
Fault Status: 11100000
Fault Priority: 7
Fault Frequency: 1
Reset counter: 42
Mileage: 102,171 km
Time Indication: 0
text
Date: 2014.08.30
Time: 12:42:45


Regards,
Andreas

Hello Andreas,

Beta-Version installiert? Wenn nein, bzw. nicht Absicht, VCDS-RKS 12.12.3 deutsch nehmen, da ist dann alles auf deutsch.

Quote:

1 Fault Found: 00384 - Optical Databus 011 - Open Circuit - Intermittent. Freeze Frame: Fault Status: 00101011 Fault Priority: 5 Fault Frequency: 198. Reset counter: 40 Time Indication: 15

MOST bus cable/connector issue. Caution: The fiber optic cables must NOT be bent! In general, they should not be handled roughly.

Quote:

6 Faults Found: 01304 - Radio 004 - No Signal/Communication - Intermittent. Freeze Frame: Fault Status: 00100100 Fault Priority: 2 Fault Frequency: 1 Reset counter: 57 Mileage: 100,361 km Time Indication: 0 Date: 2014.08.16 Time: 6:29:02 PM 01303 - Telephone Transceiver (R36) 004 - No Signal/Communication - Intermittent. Freeze Frame: Fault Status: 00100100 Fault Priority: 2 Fault Frequency: 1 Reset counter: 58 Mileage: 100,361 km Time Indication: 0 Date: 2014.08.16 Time: 18:43:02 02256 - Quiescent Current 001 - Upper Limit Exceeded - Intermittent. Freeze Frame: Fault Status: 00100001 Fault Priority: 7 Fault Frequency: 1 Reset counter: 58 Mileage: 100,361 km Time Indication: 0 Date: 2014.08.16 Time: 10:07:00 PM 03041 - Active Energy Management. 000 - - - Intermittent Freeze Frame: Fault Status: 00100000 Fault Priority: 7 Fault Frequency: 2 Reset counter: 57 Mileage: 100,361 km Time Indication: 0 Date: 2014.08.17 Time: 04:28:00 00384 - Optical Databus 011 - Open Circuit - Intermittent. Freeze Frame: Fault Status: 00101011 Fault Priority: 5 Fault Frequency: 2 Reset counter: 82 Mileage: 101,004 km Time Indication: 0 Date: 2014.08.22 Time: 15:01:57 ... 02247 - Subwoofer (R148/R157) 012 - Electrical fault in circuit - intermittent. Freeze Frame: Fault Status: 00101100 Fault Priority: 5 Fault Frequency: 1 Reset counter: 82 Mileage: 106,809 km Time Indication: 0 Date: 2014.08.08 Time: 11:17:51

Cable/connector issue or a faulty connected control unit.

Generally, these errors, like the one mentioned above, can occur due to installation issues or previous troubleshooting attempts. In this case, it's a good idea to first clear all the errors and then see which ones reappear.

Quote:

02095 - Component Protection Active. 000 - - Freeze Frame: Fault Status: 01100000 Fault Priority: 1 Fault Frequency: 3 Reset counter: 56 Mileage: 102,131 km Time Indication: 0 Date: 2014.08.30 Time: 10:44:06

Yes, regarding component protection, what's a bit confusing is that the "Reset Counter" indicates that it seems to have worked.

Okay, first, let's clear all the errors.

Best regards, Rainer.

Hello Rainer,

I have now deleted all the errors.
There were still 2 errors that remained active.

1 Fault Found:
02988 - Left-hand/right-hand traffic switchover active.

After doing some Googling, I saw that Channel 010: Tourist Solution was discontinued. As far as I understand, this setting is for when you're driving on the other side of the road and the XENON light shouldn't blind oncoming traffic. I changed the code back from 1 to 0, and then the error could be cleared. Since the steering wheel is installed on the usual left-hand side, I assume that the Xenon headlights are designed for right-hand traffic.
Now I'm only left with the sound system error.

Address 47: Sound System (J525) Labels: 8T0-035-223-BOM.clb
Part Number (Software): 8T0 035 223 T
Part Number (Hardware): 8T0 035 223 F
Component: DSP Prem H14 0400.
Revision: 00H14003 Serial number: 34814001671300
Coding: 020101
Shop Number: WSC 12336 024 394758
VCID: 3F8733E7AE8A9DE6A27-806A

1 Fault Found:
02095 - Component Protection Active.
text
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 4
Fault Frequency: 1
Reset counter: 58
Mileage: 103,361 km
Time Indication: 0
text
Date: 2014.09.09
Time: 12:11:37

Freeze Frame:
Voltage: 12.00 V
Temperature: 31.0°C
Temperature: 36.0°C
Bin. Bits: 00000100

Der Verstärker funktioniert weiterhin nur mit den linken Boxen. Selbst wenn ich die Balance auf rechts drehe (Radio, Klang, Balance) kommt die Musik unverändert auf der linken Seite.
In der Auktion stand, dass der Verstärker beim Freundlichen aktiviert werden muss. Certainly! Please provide the German text you would like me to translate into English. I will only provide the translation itself.
"The part is clearly marked and identifiable. Please note that after installation, each amplifier must be activated through the Audi online system due to component protection."

Does "invisible" mean that the device is not visible on the bus and must be explicitly activated?

Regards,
Andreas

Quote:

After doing some Googling, I saw that channel 010: Tourist Solution was discontinued. As far as my understanding goes, this is for when you are driving on the other side of the road and the XENON light should not blind oncoming traffic. I changed the code back from 1 to 0, and then the error could be cleared. Since the steering wheel is installed on the usual left-hand side, I assume that the Xenons are designed for right-hand traffic.

Yes, it's for switching between left-hand and right-hand traffic.

I'm not sure whether the component protection feature has any effect on the sound quality; I haven't encountered that issue before.
In measurement block 11, the input voltage at the audio input L/R should be visible. What value is displayed there?

Bei gebrauchten Komponenten besteht natürlich immer die Gefahr, dass diese "bis zum Ausbau einwandfrei funktioniert haben" - und danach nimmer.

Best regards, Rainer.

Telephone Input (location 011-1): 0.00V
Analog Input l (location 011-2): 0.00V
Analog Input r (location 011-3): 0.00V

Not much is happening there...

Doesn't the amplifier already receive the audio data digitally from the MOST bus?

I have an appointment with the mechanic at 4:30 PM. I want him to check if he can disable the component protection. This time, I'm going to a larger Audi garage. Maybe they will be more helpful than the Audi garage I went to last week .

Quote:

Bekommt der Verstärker die Audiodaten nicht ohnehin digital vom MOST-Bus?

Yes. However, it's possible that the analog internal input voltage is displayed there. If one side shows "x mV" and the other shows "0 mV", this would at least explain why only one side is working.

Even if the audio amplifier were to operate as a digital amplifier (Class D), the MOST data would first need to be appropriately decoded. This is also true for Class A, B, and AB amplifiers.

Best regards, Rainer.

After being received at AMAG in Dübendorf, they adjusted the component protection on my A4 for 72.30 CHF. What can I say, it worked... Now I have no more errors and all the speakers are working again...

Interesting... and thank you for the feedback .