Hi guys long post alert,

Been lurking around a while and solved a few issue with my 2007 A6 Allroad looking at old topics! Hoping someone can help me with my biggest issue though.
Got a disco dash with "parking brake malfunction" displaying. No ESP/ABS and airbag light is on.

Scanning the car I get "no communication to airbag ecu"
It all came about just after I bought the car and disconnected the MAF and pad wear sensors to clean the MAF and change the pads. I've read about the MAF causing issues on the dash but not the lack of comms to the airbag ecu.

Have checked the hazard switch and connection into the airbag ecu. Also tried another airbag ecu to see if it would at least pick up that the ecu had the wrong coding and try and talk to it but it still could not communicate to the airbag ecu so I suspect the wiring or something random is going on?

Steering angle sensor reads ok on a general scan but if I go into the module (scan shown below) it shows a fault code? Also not sure why there is a crash sensor open, doesn't show which one?



Any help appreciated!

Scan logs:


Address 03: ABS Brakes Labels: 4F0-910-517.lbl
Control Module Part Number: 4F0 910 517 AB HW: 4F0 614 517 R
Component and/or Version: ESP 8.0 quattro H05 0040
Software Coding: 0000392
Work Shop Code: WSC 00483 210 91463
VCID: 64C060B2A737A2616D-8030
5 Faults Found

01321 - Control Module for Airbags (J234)
004 - No Signal/Communication
Freeze Frame
Fault Status: 01100100
Fault Priority: 1
Fault Frequency: 1
Reset counter: 156
Mileage: 179373 km
Time Indication: 0
Date: 2018.12.09
Time: 16:13:35

Freeze Frame
Hex Value: 0x0000
Hex Value: 0x0080
Hex Value: 0x0013
Hex Value: 0x168F
Hex Value: 0x00FF

00473 - Control Module for Elect. Park/Hand Brake (J540)
013 - Check DTC Memory - Intermittent
Freeze Frame
Fault Status: 01100100
Fault Priority: 1
Fault Frequency: 1
Reset counter: 156
Mileage: 179373 km
Time Indication: 0
Date: 2018.12.09
Time: 16:13:35

01826 - Sensor for Steering Angle (G85); Supply Voltage Terminal 30
000 - - - Intermittent
Freeze Frame
Fault Status: 00100000
Fault Priority: 3
Fault Frequency: 3
Reset counter: 177
Mileage: 177292 km
Time Indication: 0
Date: 2006.11.23
Time: 12:01:31

Freeze Frame
Hex Value: 0x0000
Hex Value: 0x0280
Hex Value: 0x0024
Hex Value: 0x018B
Hex Value: 0x00FF

01314 - Engine Control Module
004 - No Signal/Communication - Intermittent
Freeze Frame
Fault Status: 00100000
Fault Priority: 3
Fault Frequency: 3
Reset counter: 177
Mileage: 177292 km
Time Indication: 0
Date: 2006.11.23
Time: 12:01:31

02083 - Message for Delay Request
004 - No Signal/Communication - Intermittent
Freeze Frame
Fault Status: 00100100
Fault Priority: 3
Fault Frequency: 1
Reset counter: 178
Mileage: 177479 km
Time Indication: 0
Date: 2018.11.27
Time: 16:57:16

Freeze Frame
Hex Value: 0x0000
Hex Value: 0x0780
Hex Value: 0x002B
Hex Value: 0x05AB
Hex Value: 0x00FF


Sunday,09,December,2018,22:06:21:27677
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 17.1.3.0 (x64)
Data version: 20170203 DS267.2
www.Ross-Tech.com




Chassis Type: 4L0
Scan: 01 02 03 05 07 08 09 0E 15 16 17 19 34 37 42 46 47 4F 52 53
55 56 61 62 69 6D 72 76 77


00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: Malfunction 1010
02-Auto Trans -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
05-Acc/Start Auth. -- Status: Malfunction 0010
07-Control Head -- Status: Malfunction 0010
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: OK 0000
0E-Media Player 1 -- Status: OK 0000
15-Airbags -- Status: Cannot be reached 1100
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: Malfunction 0010
19-CAN Gateway -- Status: Malfunction 0010
34-Level Control -- Status: Malfunction 0010
37-Navigation -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: Malfunction 0010
47-Sound System -- Status: OK 0000
4F-Centr. Electr. II -- Status: Malfunction 0010
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: Malfunction 0010
55-Headlight Range -- Status: Malfunction 0010
56-Radio -- Status: OK 0000
61-Battery Regul. -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
69-Trailer -- Status: Malfunction 0010
6D-Trunk Elect. -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
76-Park Assist -- Status: OK 0000
77-Telephone -- Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine
Cannot be reached

-------------------------------------------------------------------------------
Address 02: Auto Trans
Cannot be reached

-------------------------------------------------------------------------------
Address 03: ABS Brakes
Cannot be reached

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. Labels: None
Part No SW: 4F0 910 852 HW: 4F0 905 852 B
Component: FBSAUDIC6 ELV H31 0220
Revision: 31050601 Serial number: 10601100735069
Coding: 0000147
Shop #: WSC 02323 758 00200
VCID: 63C263AEA239A55994-8036

Subsystem 1 - Part No: 4F0 910 131 E
Component: FBSAUDIC6 EZS H45 0080

Subsystem 2 - Part No: 4F0 910 220 D
Component: FBSAUDIC6 IDG H01 0040

1 Fault Found
00230 - Transmission Park Selector Switch (F305)
010 - Open or Short to Plus - Intermittent
Freeze Frame:
Fault Status: 00101010
Fault Priority: 2
Fault Frequency: 1
Reset counter: 178
Mileage: 177479 km
Time Indication: 0
Date: 2018.11.27
Time: 16:58:16


-------------------------------------------------------------------------------
Address 07: Control Head Labels: Redir Fail!
Part No SW: 4F0 910 731 R HW: 4E0 035 729
Component: Interfacebox H43 3450
Revision: 00000000 Serial number: 350DR077777701
Coding: 0000000
Shop #: WSC 00000 000 00000
VCID: 316ED9E6A84547C956-8064

Subsystem 1 - Part No: 4F0 910 609 E
Component: Bedienteil MMIC6H01 0060

Subsystem 2 - Serial number: 00000000721092

Subsystem 3 - Serial number: 0103.04.070000000100010250˙

Subsystem 4 - Serial number: 010250˙

5 Faults Found
00003 - Control Module
005 - No or Incorrect Basic Setting / Adaptation
Freeze Frame:
Fault Status: 01100101
Fault Priority: 5
Fault Frequency: 1
Reset counter: 152
Mileage: 179337 km
Time Indication: 0
Date: 2018.12.06
Time: 14:05:33

02095 - Component Protection Active
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 5
Fault Frequency: 1
Reset counter: 182
Time Indication: 15

00384 - Optical Databus
011 - Open Circuit - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 5
Fault Frequency: 1
Reset counter: 182
Time Indication: 15

02244 - Button in Control Head is Stuck
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 5
Fault Frequency: 1
Reset counter: 40
Mileage: 177957 km
Time Indication: 0
Date: 2018.11.29
Time: 20:57:26

Freeze Frame:
Bin. Bits: 00000000
Bin. Bits: 0000000
Bin. Bits: 100

01042 - Control Module; Not Coded
000 - -
Freeze Frame:
Fault Status: 00100000
Fault Priority: 5
Fault Frequency: 1
Reset counter: 40
Mileage: 177957 km
Time Indication: 0
Date: 2018.11.29
Time: 20:57:26


-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: None
Part No SW: 4F0 910 043 A HW: 4F2 820 043 Q
Component: KLIMABETAETIGUNGH30 0020
Revision: 00000052 Serial number: 00000000382062
Coding: 0001302
Shop #: WSC 02325 758 00200
VCID: 1C301852DFC7DAA115-8048

3 Faults Found
01321 - Control Module for Airbags (J234)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 5
Fault Frequency: 1
Reset counter: 137
Mileage: 177271 km
Time Indication: 0
Date: 2018.11.13
Time: 19:58:34

Freeze Frame:
ON

01314 - Engine Control Module
008 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 3
Fault Frequency: 1
Reset counter: 178
Mileage: 177479 km
Time Indication: 0
Date: 2018.11.27
Time: 16:57:21

00797 - Sunlight Photo Sensor (G107)
009 - Open or Short to Ground - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 3
Fault Frequency: 1
Reset counter: 178
Mileage: 177479 km
Time Indication: 0
Date: 2018.11.27
Time: 16:57:21


-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 4F0-910-279.lbl
Part No SW: 4F0 910 279 K HW: 4F0 907 279
Component: ILM Fahrer H17 0240
Revision: 00000000 Serial number: 4F0907279
Coding: 0013121
Shop #: WSC 02335 758 00200
VCID: 316ED9E6A84547C956-8064

Subsystem 1 - Part No: 4F2 910 113 B Labels: 1KX-955-119.CLB
Component: Wischer AudiC6 H04 0190
Coding: 00064784
Shop #: WSC 02335

Subsystem 2 - Part No: 4E0 910 557 A Labels: 8K0-955-559.CLB
Component: REGENLICHTSENSORH13 0090
Coding: 00146221
Shop #: WSC 02335

No fault code found.

-------------------------------------------------------------------------------
Address 0E: Media Player 1 Labels: 4E0-910-111.lbl
Part No SW: 4E0 910 110 C HW: 4E0 035 110 A
Component: MP3-Changer H44 0350
Revision: 00044000 Serial number: AUZ5ZBG3211535
Shop #: WSC 00000 000 00000
VCID: 183804422BFFB68131-804C

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags
Cannot be reached

-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 4F0-910-549.lbl
Part No SW: 4F0 910 549 HW: 4F0 953 549 A
Component: Lenksäulenmodul H08 0230
Revision: 00H08000 Serial number: 90055070810256
Coding: 0102142
Shop #: WSC 02323 758 00200
VCID: 66C47ABA510BD07173-8032

Subsystem 1 - Part No: XXXXXXXXXXX
Component: Lenkradmodul H07 0090

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments
Cannot be reached

-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels: 4L0-910-468.clb
Part No SW: 4L0 910 468 HW: 4L0 907 468
Component: J533__Gateway H06 0040
Revision: 00H06000 Serial number: 0900B0733082DA
Coding: F751BE7F303206
Shop #: WSC 00483 210 91463
VCID: 6CD008924FE7EA2125-8038

3 Faults Found
01321 - Control Module for Airbags (J234)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 137
Mileage: 177271 km
Time Indication: 0
Date: 2018.11.13
Time: 19:58:29

00384 - Optical Databus
011 - Open Circuit - Intermittent
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 137
Mileage: 177271 km
Time Indication: 0
Date: 2018.11.13
Time: 19:58:29

01314 - Engine Control Module
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 178
Mileage: 177479 km
Time Indication: 0
Date: 2018.11.27
Time: 16:57:16


-------------------------------------------------------------------------------
Address 34: Level Control
Cannot be reached

-------------------------------------------------------------------------------
Address 37: Navigation Labels: 4E0-910-88x-37.lbl
Part No SW: 4E0 910 888 E HW: 4E0 919 887 M
Component: MNS ECE H49 1050
Revision: 00000000 Serial number: 364DP077670900
Shop #: WSC 00483 210 50163
VCID: 3068DCE2A34F4EC159-8064

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver Labels: 4F0-910-793-42.lbl
Part No SW: 4F0 910 793 P HW: 4F0 959 793 P
Component: TSG FA H12 0230
Revision: 00000000 Serial number: g
Coding: 0003642
Shop #: WSC 02327 758 00200
VCID: 377AE7FE462199F918-8062

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 4F0-910-289.lbl
Part No SW: 4F0 910 289 B HW: 4F0 907 289 B
Component: Komfortgeraet H22 0170
Revision: 01700022 Serial number: 01038780160000
Coding: 3547899
Shop #: WSC 02335 758 00200
VCID: 295E318680953F099E-807C

Subsystem 1 - Part No: 1K0 951 605 C
Component: LIN BACKUP HORN H03 1301

Subsystem 2 - Part No: 4F0 910 177
Component: Innenraumueberw.H01 0020

2 Faults Found
01366 - Opened Due to Crash Signal
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 3
Fault Frequency: 254
Reset counter: 156
Mileage: 170606 km
Time Indication: 0
Date: 2018.04.12
Time: 17:13:57

01314 - Engine Control Module
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 3
Fault Frequency: 1
Reset counter: 178
Mileage: 177479 km
Time Indication: 0
Date: 2018.11.27
Time: 16:57:16


-------------------------------------------------------------------------------
Address 47: Sound System Labels: 4F0-910-223-BO.lbl
Part No SW: 4F0 910 223 J HW: 4F0 035 223 G
Component: DSP-High C6 H10 0240
Revision: PROD_01 Serial number: 00000000024884
Coding: 0000113
Shop #: WSC 02323 758 00200
VCID: 25463DB6EC8D1B69BA-8070

No fault code found.

-------------------------------------------------------------------------------
Address 4F: Centr. Electr. II
Cannot be reached