Need help with diagnostic issues 2005 Allroad 2.5tdi BAU

quattro-4life

New Member
Hi folks, my first post here and it’s a bit of a read!

Any help or suggestions greatly appreciated.

I will post the results of a full scan but I’m not looking at the injection or fuel level sensor related issues at the moment; they were there before my main problems started.

Essentially:

No power to climate control or air suspension, stability control off, ABS off, outside temperature showing -20c, oil level sensor error on dash, auto gearbox shift lock won't disengage whilst pressing brakes...

All of the above seemed to happen when the idler/tensioner failed on the A/C pump, so I assumed it damaged a part of the wiring harness and decided it was time to do the belts and removed the front of the car.

No sign of any damage whatsoever and there are no wires near the front of the engine (that I can see) to be damaged.

I proceeded to replace all the belts, pulleys, pump etc.

Car is running now and I am going around in circles.
I spoke with a VW tech and he said it’s a coincidence that the the dash lit up when the A/C idler failed but I’m not so sure??
He seems to think the powertrain issue relates to the instrument cluster?

I have checked all fuses (OK).

Please help!

(I posted this on another forum too but no replies as of yet…)

Scan results:

Gateway does not exist or CAN interface required.

Chassis Type: 4B - Audi A6 C5

Scan: 01,02,03,08,15,16,17,35,36,37,45,55,56,76


-------------------------------------------------------------------------------

Address 01: Engine

Controller: 8E0 907 401 J

Component: 2.5l/4VTEDC G000AG 0006

Coding: 06006

Shop #: WSC 00720

000000059130106LXC150_1.V79342031989

5 Faults Found:

01441 - Low Fuel Level Sensor (G210)

30-00 - Open or Short to B+

01441 - Low Fuel Level Sensor (G210)

27-00 - Implausible Signal

18043 - Powertrain Data Bus: Missing Message from A/C Controller

P1635 - 35-10 - - - Intermittent

17583 - Pre-Injection Turned Off

P1175 - 35-00 - -

18062 - Please check DTC Memory of Instrument Cluster

P1654 - 35-00 - -

Readiness: N/A


-------------------------------------------------------------------------------

Address 02: Auto Trans

Controller: 4Z7 927 156 N

Component: AG5 01V 2.5lTDI RdW 2222

Coding: 00001

Shop #: WSC 00000

4 Faults Found:

17090 - Transmission Range Sensor (F125): Implausible Signal

P0706 - 35-00 - -

18169 - Shift Lock Solenoid (N110): Short to Ground

P1761 - 35-00 - -

18265 - Load Signal: Error Message from ECU

P1857 - 35-00 - -

18161 - Tiptronic Switch (F189): Implausible Signal

P1753 - 35-00 - -


-------------------------------------------------------------------------------

Address 03: ABS Brakes

Controller: 4Z7 907 389 A

Component: ABS/ESP allrad D66

Coding: 06357

Shop #: WSC 00012

3 Faults Found:

01486 - System Function Test Activated

35-00 - -

01310 - Level Control System Control Module (J197)

49-00 - No Communications

18265 - Load Signal: Error Message from ECU

P1857 - 35-00 - -


-------------------------------------------------------------------------------

Skipping Address 15-Airbags


-------------------------------------------------------------------------------

Address 17: Instruments

Controller: 4B0 920 981 J

Component: KOMBI+WEGFAHRS. VDO D17

Coding: 04460

Shop #: WSC 00186

WAUZZZ4B65N024453 AUZ7Z0D2693303

1 Fault Found:

00562 - Sensor for Oil Level/Temperature (G266)

30-00 - Open or Short to B+


-------------------------------------------------------------------------------

Address 35: Centr. Locks

Controller: 4B0 962 258 L

Component: Zentralverriegelung D37

Coding: 06859

Shop #: WSC 00140

1 Fault Found:

01366 - Opened Due to Crash Signal

35-00 - -


-------------------------------------------------------------------------------

Address 37: Navigation

Controller: 4B0 035 192 P

Component: RNS-E HIGH EU H52 0650

Coding: 0502113

Shop #: WSC 02335

5 Faults Found:

00532 - Supply Voltage B+

002 - Lower Limit Exceeded - Intermittent

00446 - Function Limitation due to Under-Voltage

002 - Lower Limit Exceeded - Intermittent

00862 - Antenna for GPS Navigation (R50/R52)

011 - Open Circuit

02261 - Media Player: Position 1 (R118)

014 - Defective

00858 - Connection: Radio ZF Output to Antenna Amplifier

011 - Open Circuit - Intermittent


-------------------------------------------------------------------------------

Address 45: Inter. Monitor

Controller: 4B0 951 178 A

Component: Innenraumueberw. D04

Coding: 00102

Shop #: WSC 02334

1 Fault Found:

01350 - Alarm via Theft Warning System: Rear

35-00 - -


-------------------------------------------------------------------------------

Address 56: Radio

Controller: 4B0 035 192 P

Component: RNS-E HIGH EU H52 0650

Coding: 0502113

Shop #: WSC 02335

5 Faults Found:

00532 - Supply Voltage B+

002 - Lower Limit Exceeded - Intermittent

00446 - Function Limitation due to Under-Voltage

002 - Lower Limit Exceeded - Intermittent

00862 - Antenna for GPS Navigation (R50/R52)

011 - Open Circuit

02261 - Media Player: Position 1 (R118)

014 - Defective

00858 - Connection: Radio ZF Output to Antenna Amplifier

011 - Open Circuit - Intermittent


End --------------------------------------------------------------------------------------------------


Also…

Instrument cluster:


Control Module Part Number: 4B0 920 981 J

Component and/or Version: KOMBI+WEGFAHRS. VDO D17

Software Coding: 04460

Work Shop Code: WSC 00186

Additional Info: WAUZZZ4B65N024453 AUZ7Z0D2693303

3 Faults Found:

00667 - Ambient Temperature Signal

30-10 - Open or Short to B+ - Intermittent

00771 - Fuel Level Sensor (G)

30-10 - Open or Short to B+ - Intermittent

00562 - Sensor for Oil Level/Temperature (G266)

30-00 - Open or Short to B+

TRNSMISSION


Control Module Part Number: 4Z7 907 389 A

Component and/or Version: ABS/ESP allrad D66

Software Coding: 06357

Work Shop Code: WSC 00012

3 Faults Found:

01119 - Gear Recognition Signal

35-10 - - - Intermittent

01310 - Level Control System Control Module (J197)

49-00 - No Communications

18265 - Load Signal: Error Message from ECU

P1857 - 35-00 - -
 

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amiram

A6 C5 Allroad 2.5L TDI Tip Still on air :)
More Faults than a car.. I would try to erase everything and see See what comes back. so many faults could be caused as a result of poor ground. connection.
 

quattro-4life

New Member
Hi Amiram,
All those faults remain after erasing...
Ive had a tech check the instrument cluster and he went through the soldering on the chips etc.
No improvement..
Going through wiring now to see what we can find...
More Faults than a car.. I would try to erase everything and see See what comes back. so many faults could be caused as a result of poor ground. connection.
 
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