Hey guys I'm looking for some input. I can rebuild a tranny, but I refuse to start without hearing somebody's experience so that I can more accurately pinpoint the issue and what caused it. I own a B6 and am on here a lot but this post is for a 99 D2 A8 4.2L automatic.
Here's what happens and then the VAG-COM results are after:

Car starts fine, idles fine, except a small faint rotational tick from underneath center console. Reverse is flawless, almost feels too aggressive. When in drive, it will speed up normal with gradual acceleration. That is short lived as it will clunk very loudly once I reach about 10ish mph and immediately enter limp mode. PRND432 are red. Seems to be a speed caused noise instead of rpm. This will happen no matter what I have the shifter in (1,2,3,4 or drive) reverse still is flawless, but Rpms don't match tranny, obviously. I can speed it up, but not really because Rpms are essentially red lined when I tried, and I couldn't make it up my driveway lol.

This is a customers car and I don't know previous work history but I noted that CV Axles are bad. REALLY BAD. it literally feels like a CV disengaging from the hub as well as sounds like it when the clunck happens.

Anyway, here's VCDS: thank you for anything you guys have. I have been failing on any sort of search bar I could find and haven't really found a sure-fire logical opinion. Also not that PCM/ECU/TCU were wet at some point it looks like. Not entirely sure. Thank you in advance.

VCDS Version: Release 15.7.4 Running on Windows 10 x86
Data version: 20160216
www.Ross-Tech.com

Monday,14,March,2016,18:33:47:07219

Chassis Type: 4D - Audi A8 D2 (1994 > 2003)
Scan: 25 01 03 08 11 15 16 17 18 35 37 45 55 56 57 65 67 75 76 77
02

Mileage: 276530km-171827miles
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Address 01: Engine Labels: Redir Fail!
Part No: 4D0 907 557 M
Component: 4.2L V8/4V MOTR AT D02
Coding: 01273
Shop #: WSC 02314
VCID: 3663D8B3125B4E8E94-4AE8

2 Faults Found:
18010 - Power Supply Terminal 30
P1602 - 35-10 - Voltage too Low - Intermittent
18032 - MIL Request Signal Active (Check TCM for errors too!)
P1624 - 35-10 - - Intermittent
Readiness: N/A

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Address 08: Auto HVAC Labels: Redir Fail!
Part No: 4D0 820 043 K
Component: D2-KLIMAVOLLAUTOMAT D05
Coding: 00180
Shop #: WSC 02314
VCID: 244712FBB4C7CC1E3A-256E

2 Faults Found:
00711 - Left Footwell Flap Positioning Motor (V108)
41-10 - Blocked or No Voltage - Intermittent
01592 - Air Quality Sensor (G238)
57-10 - Electric Circuit Failure - Intermittent

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Address 15: Airbags Labels: 4D0-959-655-AI7.lbl
Part No: 4D0 959 655 H
Component: Airbag 7 Audi 050C
Coding: 00225
Shop #: WSC 02324
VCID: 377DD5B71551B7868F-5140

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

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Address 17: Instruments Labels: 4D0-919-033-MYW.lbl
Part No: 4D0 919 035 P
Component: D2-KOMBIINSTRUMENT D57
Coding: 00283
Shop #: WSC 02314
VCID: 3365E1A701295BA6B3-503C

1 Fault Found:
00771 - Fuel Level Sensor (G)
30-10 - Open or Short to Plus - Intermittent

-------------------------------------------------------------------------------
Address 35: Centr. Locks Labels: 8D0-862-257.lbl
Part No: 8L0 862 257 N
Component: CV-Pump D11
Coding: 16140
Shop #: WSC 02314
VCID: 408FBE6B409FF03E3E-4EEA

6 Faults Found:
01367 - Central Locking Pump Run Time Exceeded (Likely Leak)
35-00 - -
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 - -
01369 - Alarm triggered by Hood Switch
35-00 - -
01365 - Lock/Unlock Switch; Interior
29-00 - Short to Ground

-------------------------------------------------------------------------------
Address 45: Inter. Monitor Labels: 4B0-951-173.lbl
Part No: 8L0 951 173
Component: Innenraumueberw. D04
Coding: 00001
Shop #: WSC 00000
VCID: 6ED330D32A8B364E9C-4B1A

4 Faults Found:
01380 - Alarm triggered by Anti-Theft Sensor; Rear Left
35-00 - -
01381 - Alarm triggered by Anti-Theft Sensor; Rear Right
35-00 - -
01382 - Alarm triggered by Anti-Theft Sensor; Front Left
35-00 - -
01383 - Alarm triggered by Anti-Theft Sensor; Front Right
35-00 - -

-------------------------------------------------------------------------------
Address 55: Headlight Range Labels: 4B0-907-357-AUT.lbl
Part No: 4B0 907 357
Component: LEUCHTWEITEREGLER D001
Coding: 00008
Shop #: WSC 02314
VCID: 65C14FFFFF7DF516ED-5124

No fault code found.

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Address 02: Auto Trans Labels: 01L-927-156.lbl
Part No: 4D0 927 156 BH
Component: AG5 01L 4.2l4V USA 1313
Coding: 00002
Shop #: WSC 00000
VCID: 70EF2EAB30BF20BE8E-5124

3 Faults Found:
17114 - Gear Ratio Monitoring
P0730 - 35-00 - Incorrect Gear Ratio
18265 - Load Signal
P1857 - 35-00 - Error Message from ECU
17087 - Brake Switch (F)
P0703 - 35-00 - Electrical Malfunction

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