I have a 98 audi s6 in the shop and pulled these codes VCDS Version: Release 805.4
Data version: 20090602

Wednesday,17,June,2009,10:13:22:21714

Chassis Type: 4B - Audi A6 C5
Scan: 01 02 03 06 08 15 16 17 18 34 35 36 37 45 55 56 57 65 67 75
76 77

Mileage: 271670km/168807miles
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Address 01: Engine Labels: 078-907-551-AHA.lbl
Part No: 4D0 907 551 AH
Component: 2.8L V6/5V MOTR AT D01
Coding: 06252
Shop #: WSC 02325

1 Fault Found:
16795 - Secondary Air Injection System: Incorrect Flow Detected
P0411 - 35-00 - -
Readiness: 0000 0000

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Address 02: Auto Trans Labels: 01V-927-156.lbl
Part No: 4B0 927 156 G
Component: AG5 01V 2.8l5V USA 8509
Coding: 00000
Shop #: WSC 00000

1 Fault Found:
00526 - Brake Light Switch-F
27-00 - Implausible Signal

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Address 03: ABS Brakes Labels: 8E0-614-111-EDS.lbl
Part No: 8E0 614 111 M
Component: ABS/EDS 5.3 QUATTRO D31
Shop #: BB 24302

No fault code found.

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Address 08: Auto HVAC Labels: 4B0-820-043-MY1.lbl
Part No: 4B0 820 043 G
Component: A6-Klimavollautomat D55
Coding: 00160
Shop #: WSC 02325

No fault code found.

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Address 15: Airbags Labels: 4B0-959-655-AI7.lbl
Part No: 4B0 959 655 K
Component: Airbag 7 Audi 0501
Coding: 00106
Shop #: WSC 02324

1 Fault Found:
00532 - Supply Voltage B+
07-10 - Signal too Low - Intermittent

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Address 17: Instruments Labels: 4B0-919-xxx-17.lbl
Part No: 4B0 919 930 J
Component: C5-KOMBIINSTR. VDO D03
Coding: 07262
Shop #: WSC 00000

No fault code found.

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Address 35: Centr. Locks Labels: 4B0-962-258.lbl
Part No: 4B0 962 258 C
Component: Central Lock/Alarm D30
Coding: 15885
Shop #: WSC 02325

6 Faults Found:
01371 - Alarm triggered by Door Contact Switch; Driver's Side
35-00 - -
01374 - Alarm triggered by Terminal 15
35-00 - -
01370 - Alarm triggered by Interior Monitoring
35-00 - -
01368 - Alarm triggered by Luggage Compartment Switch
35-00 - -
00956 - Key 2
09-10 - Adaptation Limit Surpassed - Intermittent
01559 - Drivers Door
58-10 - Can't Lock - Intermittent

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Address 36: Seat Mem. Drvr Labels: None
Part No: 4B0 959 760 A
Component: Sitzmemory D05

No fault code found.

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Address 45: Inter. Monitor Labels: 4B0-951-173.lbl
Part No: 4B0 951 173
Component: Innenraumueberw. D03
Coding: 00001
Shop #: WSC 00000

No fault code found.

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Address 56: Radio Labels: 8D0-035-1xx-56.lbl
Part No: 4B0 035 186
Component: Radio D01
Coding: 00117
Shop #: WSC 02325

No fault code found.

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Here's some help:

http://wiki.ross-tech.com/index.php/16795/P0411/001041
http://wiki.ross-tech.com/index.php/00526
http://wiki.ross-tech.com/index.php/00956
http://wiki.ross-tech.com/index.php/01559

As far as the "Alarm Triggered by..." codes, they are not "faults" per se, just notifications. Clear them.

-Uwe-