Audi A4 B8 avant quattro ABS ESP malfunction

[priit]

Hello Audi fans! I am new posting to this forum.

I have a problem with fixing my friends Audi A4 b8 Avant Quattro 3.0tdi, it is having ABS, ESP, Tyre pressure and Parking brake malfunction.
I added list of fault codes, as it seems most of these are connected to each other, but I can not understand what is causing it.
It seems like CAN signal fault but at the same time I have heard it can be ABS ESP module itself that is causing problems like this.
Maybe there is someone smarter than me and can suggest the core of the problem

Diesel (CCWA - TDI-CR - MT/AT)
DTC Description
No fault codes
Brake (ABS/ESP - Bosch 8.1 ESP - MT/AT - With tyre pressure monitoring)
DTC Description
01317 - Combination instrument
- Check fault codes
- Permanent
00473 - Electromechanical parking brake control unit
- Check fault codes
- Permanent
03159 - Function, tyre pressure monitoring ESP
- No symptom
- Permanent
00287 - Rear right wheel speed sensor
- Circuit failure
- Permanent
Brake (Parking brake - EPB (Electric parking brake))
DTC Description
01316 - ABS control unit
- Check fault codes
- Permanent
Instrument (Instrument - Diagnose)
DTC Description
00457 - Control module network
- Check fault codes
- Permanent
Fault codes
Mechanic:
Date: 8.09.2020
Car licence no:
VIN: WAUZZZ8K89A132581
Mileage:
Vehicle: Audi - A4 [08-] - 2009
Delphi DS150E (New VCI) | 2014 Release 2 (2.14.2.2) 1
Climate (Climate control - Climatronic "Basic" (Mono zone heat regulation.))
DTC Description
00457 - Control module network
- Check fault codes
- Permanent
01271 - Step motor temperature damper
- Above upper regulation limit threshold
- Intermittent
Gearbox (Gearbox - S-Tronic 0B5)
DTC Description
No fault codes
Immobiliser (Immobiliser - EZS (Kessy))
DTC Description
00956 - Key 2; adaption limit exceeded
- Below lower regulation limit threshold
- Permanent
02823 - Lock conditions electronic steering column lock
- No symptom
- Permanent
00955 - Key 1; adaption limit exceeded
- Below lower regulation limit threshold
- Intermittent
01330 - Convenience control unit
- Check fault codes
- Permanent
Restraints (Airbag - VW 10)
DTC Description
No fault codes
Multifunction (Central electronics - Diagnose)
DTC Description
00779 - Outside temperature sensor
- Circuit failure
- Permanent
Multifunction (Convenience system - Diagnose)
DTC Description
01317 - Combination instrument
- Check fault codes
- Permanent
Delphi DS150E (New VCI) | 2014 Release 2 (2.14.2.2) 2
Multifunction (Door electronics - Driver door)
DTC Description
02122 - Memory button
- faulty signal
- Intermittent
Multifunction (Door electronics - Passenger door)
DTC Description
00920 - Mirror heating
- Circuit failure
- Permanent
Multifunction (Door electronics - Rear left door)
DTC Description
No fault codes
Multifunction (Door electronics - Rear right door)
DTC Description
No fault codes
Multifunction (Gateway - Diagnose)
DTC Description
No fault codes
Multifunction (Infotainment - DSP (Sound system))
DTC Description
02558 - Speaker left rear
- Open circuit
- Permanent
00417 - Front left mid/bass speaker
- Open circuit
- Intermittent
Multifunction (Infotainment - Media player position 1)
DTC Description
No fault codes
Multifunction (Infotainment - Navigation)
DTC Description
No fault codes
Delphi DS150E (New VCI) | 2014 Release 2 (2.14.2.2) 3
Multifunction (Infotainment - Radio)
DTC Description
No fault codes
Multifunction (Infotainment - Telephone)
DTC Description
No fault codes
Multifunction (Seat electronics - Seat module, driver)
DTC Description
02095 - Component protection active
- No symptom
- Intermittent
Multifunction (Steering wheel electronics - Diagnose)
DTC Description
01316 - ABS control unit
- Check fault codes
- Permanent

[Smac770]

I'd start by getting a better scan tool. Ross-Tech VCDS preferred, OBD11 sort of acceptable. That output is just painful to look at.

But one thing that does stand out:
00287 - Rear right wheel speed sensor
- Circuit failure

So swap the right rear and the front left wheel speed sensors (seems the same ones are on opposite corners), clear codes, see if you get a new code for right rear or front left. Right rear, you have a wiring problem. Front left, replace the sensor with a new one. The ABS system will be very unhappy while it cannot get good wheel speed data from all four corners.

You have several other electrical faults listed; shouldn't be a big deal to sort through those.

[priit]

Thank you for reply.
As scan tool I was using Autocom.
I can get access to VCDS tool end of the week.
Also I can try out all the suggetions also this weekend.

I was thinking the Rear right wheel sensor code may be caused already by faulty communication between modules. For me concerning codes seem to be 01316, 01317 and 00457.
Is it possible that one wheel speed sensor is causing so much trouble in different modules.
The codes are permanent and can not be cleared, faults appear again when igniton is turned on. Nothing changes in codes when driving a car.
Here is the Google Drive link for fault codes as PDF file (may be better to read): https://drive.google.com/file/d/14yd...ew?usp=sharing

[priit]

I did some research from previous owner of the car, he told that the wheel speed sensor is unplugged.
If the Right rear wheel speed sensor is plugged to the car, then the car starts to vibrate and jerk when driving.
Maybe the ABS module fault?

[Smac770]

Well, that depends, is the sensor faulty (providing incorrect data), is the wiring faulting (causing incorrect communications), or is the ABS module faulty (operating incorrectly though it has correct data).

You can't leave it unplugged and carry on that way. The sensor is wired directly to the ABS module, so comms to other modules would be secondary concern. And most of the other faults are unrelated (00457) or saying "there's a problem with the ABS", which you already know. These modules require proper operation of the ABS module to feel comfortable with their own operation, such as the parking brake module (01317) and the steering module (01316).

So you have the only thing you should be looking at right now, what's the story with the ABS module and that right rear sensor. It could be a $20 sensor, or it could be an extremely expensive replacement of the ABS control module (which Audi considers an integrated, non-separable component of the ABS hydraulic module, ie the thing all the brake lines come from).