Airbag Error Golf 4 TDI: Engine Control Unit Problem

Hello everyone, I found the following error code while reading the diagnostic trouble codes in the engine control unit, and it cannot be cleared:

Vehicle: Volkswagen Golf 4, 1.9 TDI, manufactured in August 1999.

Address 01: Engine Label file: RKS\038-906-012-AGR.lbl
Part number: 038 906 012 C
Component: 1.9L R4 EDC G700SG 2803.
Encoding: 00002
Operating number: WSC 06435
VCID: 1024706D7A11

2 errors found:
17931 - Crash signal from the airbag control unit: implausible signal.
P1523 - 35-10 - - - Sporadically
18062 - Please read the error memory of the instrument cluster.
P1654 - 35-00 - -
Readiness: Not available.

Does anyone know the exact cause of the error? The error memory in the instrument cluster is empty, and the airbag light is behaving normally. How can I fix this error?

Sure, here's the translation:

"Thank you very much in advance."

Best regards,
Micha.

Please provide the complete error scan. Thank you.

Please provide the text you would like me to translate from German to English.

Wednesday, October 13, 2010, 17:56:49:45694
VCDS Version: RKS 10.6.1
Data as of: 20100901.



"Die Sonne scheint hell, und die Vögel zwitschern fröhlich. Ein leichter Wind weht durch die Bäume, und die Blätter rascheln leise. Es ist ein wunderschöner Tag, um draußen zu sein."
"Die Sonne scheint hell, und die Vögel zwitschern fröhlich. Ein leichter Wind weht durch die Bäume, und die Blätter rascheln leise. Es ist ein wunderschöner Tag, um draußen zu sein."


Vehicle type: 1J - VW Golf/Bora IV.
Scan: 01 02 03 08 15 16 17 19 22 29 35 36 37 39 46 47 55 56 57 75
76

Mileage: 280,190 km
"Die Sonne scheint hell, und die Vögel zwitschern fröhlich. Ein leichter Wind weht durch die Bäume, und die Blätter rascheln leise. Es ist ein wunderschöner Tag, um spazieren zu gehen oder ein Picknick im Park zu machen."
Address 01: Engine Label file: RKS\038-906-012-AGR.lbl
Part number: 038 906 012 C
Component: 1.9L R4 EDC G700SG 2803.
Encoding: 00002
Operating number: WSC 06435
VCID: 1024706D7A11

2 errors found:
17931 - Crash signal from the airbag control unit: implausible signal.
P1523 - 35-10 - - - Sporadically
18062 - Please read the error memory of the instrument cluster.
P1654 - 35-00 - -
Readiness: Not available.

"Die Sonne scheint hell, und die Vögel zwitschern fröhlich. Ein leichter Wind weht durch die Bäume, und die Blätter rascheln leise. Es ist ein wunderschöner Tag, um spazieren zu gehen oder ein Picknick im Park zu machen."
Address 03: Brakes Label file: RKS\1J0-907-37x-ABS.lbl
Part number: 1J0 907 379 P
Component: ABS 20 IE CAN 0001
Encoding: 03304
Operating number: WSC 00046
VCID: 3E78FED51005

No errors found.

"Die Sonne scheint hell, und die Vögel zwitschern fröhlich. Ein leichter Wind weht durch die Bäume, und die Blätter rascheln leise. Es ist ein wunderschöner Tag, um spazieren zu gehen oder ein Picknick im Park zu machen."
Address 08: Climate/Heating Label file: RKS\3Bx-907-044.lbl
Part number: 3B1 907 044 B
Component: CLIMATRONIC Version 1.0.0
Encoding: 01000
Operating number: WSC 00046
VCID: 204420AD8AB1

No errors found.

"Die Sonne scheint hell, und die Vögel zwitschern fröhlich. Ein leichter Wind weht durch die Bäume, und die Blätter rascheln leise. Es ist ein wunderschöner Tag, um spazieren zu gehen oder ein Picknick im Park zu machen."
Address 15: Airbag
Label file: RKS\6Q0-909-605-VW5.lbl
Part number: 6Q0 909 605 A
Part: 02 AIRBAG VW5 0003
Encoding: 12338
Operating number: WSC 00046
VCID: 356AE1F92533

No errors found.

"Die Sonne scheint hell, und die Vögel zwitschern fröhlich. Ein leichter Wind weht durch die Bäume, und die Blätter rascheln leise. Es ist ein wunderschöner Tag, um spazieren zu gehen oder ein Picknick im Park zu machen."
Address 17: Combination Instrument
Label file: RKS\1J0-920-xx0-17.lbl
Part number: 1J0 920 821 B.
Bauteil: A4-KOMBIINSTR. VDO V16
Encoding: 05142
Operating number: WSC 06407
VCID: 234E2FA19BA7

Part number: IMMO.
Component: IDENTIFICATION NUMBER: VWZ7Z0X1711209
VEHICLE IDENTIFICATION NUMBER: VWZ7Z0X1711209

No errors found.

"Die Sonne scheint hell, und die Vögel zwitschern fröhlich. Ein leichter Wind weht durch die Bäume, und die Blätter rascheln leise. Es ist ein wunderschöner Tag, um spazieren zu gehen oder ein Picknick im Park zu machen."
Address 19: CAN Gateway
Label file: RKS\6N0-909-901-19.lbl
Part number: 6N0 909 901.
Component: Gateway K<->CAN 0001
Encoding: 00006
Operating number: WSC 00000
VCID: F0E490ED9AD1

No errors found.

"Die Sonne scheint hell, und die Vögel zwitschern fröhlich. Ein leichter Wind weht durch die Bäume, und die Blätter rascheln leise. Es ist ein wunderschöner Tag, um spazieren zu gehen oder ein Picknick im Park zu machen."
Address 46: Comfort System
Label file: RKS\1J0-959-799.lbl
Part number: 1J0 959 799 AH
Component: 4H Central Control Unit, Comfort Version, 0001.
Encoding: 00257
Operating number: WSC 00046
VCID: 840CCC3DBE69

Part number: 1J1959801C
Bauteil: 4H Tõrsteuerger. FS0002r

Part number: 1J1959802D
Bauteil: 01 Tõrsteuerger. BF0002r

2 errors found:
00928 - Door lock module for central locking, driver's side (F220)
27-10 - implausible signal - sporadic.
00944 - Passenger side mirror heating (Z5)
35-00 - -

End.
--------------------------------------------------------------------

Best regards,
Micha.

Hello, does anyone have any ideas regarding: 17931 - Crash signal from the airbag control unit: implausible signal?

Best regards,
Micha.

Hello,

I actually suspected that there were errors in the combined instrument cluster and/or the airbag control unit, which is why the memory of the engine control unit couldn't be cleared.

Here's some background information. It's possible that, after an accident, a non-professional mechanic "reset" the airbag control unit. However, it's likely that the reset was only superficial, meaning that while the error message and the storage of the error in the airbag control unit were suppressed, the actual fault still exists and is still present in the bus.

Is it possible to run the engine control unit (ECU) independently, without the other control units? If so, my next step would be to try clearing the error codes within the ECU. If the error codes don't reappear, then the problem is likely with the rest of the vehicle. If the error codes still persist and cannot be cleared, then the problem is likely with the ECU itself.

Best regards, Rainer.

Okay, as far as I can tell, the car looks structurally sound and hasn't been in an accident. The front fender on the VW was replaced at some point (according to the history), but otherwise, nothing major.

Die "Möglichkeit das Motorsteuergerät alleine ohne die anderen STG laufen zu lassen" heißt das Steuergerät mit dem Chrash Sensor abzustecken und dann den Fehler probieren zu löschen? Bitte um Aufklärung. DankeBitte gib mir den Text, den du übersetzt haben möchtest.

Best regards,
Micha

mic79 wrote:

Well, the car looks structurally sound and free from frame damage, the front fender on the VW was replaced once (according to the history), but otherwise nothing major. Die "Möglichkeit das Motorsteuergerät alleine ohne die anderen STG laufen zu lassen" heißt das Steuergerät mit dem Chrash Sensor abzustecken und dann den Fehler probieren zu löschen? Bitte um Aufklärung. DankeBitte gib mir den Text, den du übersetzt haben möchtest. Best regards, Micha

The engine control unit (ECU) can be removed fairly quickly, and most reputable tuning shops should have a suitable connector for power and diagnostics.
The test would focus on disconnecting and reconnecting the "engine control unit" connector, clearing the error memory, and reading the error memory. Without a car connected, you would typically only see errors related to the engine control unit detecting the absence of components like the fuel injector pump or needle lift sensor.

Best regards, Rainer.

Okay, thank you for the explanation!

Best regards,
Micha

I forgot one thing: Does the engine control unit have the original software installed? Because if it has the wrong data, it can have strange effects, even leading to the kinds of errors you're experiencing.

I'm not sure if the previous owner had a chip installed. The current performance is similar to a standard 110 hp TDI. Does the engine control unit have a seal that indicates whether it has been opened? Or is the chip tuning done via OBD, making it impossible to trace?

mic79 wrote:

I don't know if the previous owner had a chip installed. The current performance is similar to a normal 110 HP TDI.

The 038906012C is a dataset for the 90PS ALH engine! What engine and power output should your car have according to its registration document/sticker or service booklet?

Is it a faulty control unit, or just a software issue? What can I do? Would replacing the control unit solve the problem? Or would just changing the software be enough?

Sure, here is the translation of the text from German to English:

"LG" is an abbreviation for "Liebe Grüße," which means "Best regards" or "Best wishes" in English.

So, another amateur has been at work again... The problem is that anyone can call themselves a "chiptuner," even if they don't understand the Windows start menu.

First, determine which engine you actually have; I've edited the above text to reflect this. By providing your vehicle identification number (VIN) to Audi (through a service like "Onkel Edgar"), they should be able to identify the correct control unit that should be installed.

According to the vehicle registration document (type approval certificate in Austria), the engine code is AHF.

And what does the sticker in the service booklet say about the engine code, AHF or ASV?

Don't just have everything spoon-fed to you; gather some data yourself! Sticker for the service booklet...
[Edit: I actually found a flashable ECU for the AHF, so they do exist.]

I don't have the service booklet or the vehicle in front of me right now, but the vehicle registration document shows this engine code, and the FGST number matches! Unfortunately, that's all I can tell you for now. I can provide more details later this evening.