ABS TC Angel sensor faults, brake pedal switch ??

[M-A8]

Hi guys
I'm trying to figure out what is going on with my mate's D3, he gets constantly ABS, TC faults plus VCDS gives steering angle sensor fault, but EVERYTHING is working fine. It happens during the first breaking and left turn and on motorways during the breaking.

I looked at current flow diagrams in Elsa and I can see that brake pedal switch is connected or gives feedback to all this modules, and brake pedal switch is a common fault in D3 and it can cause various faults, such as ESP fault when you press brake pedal while on gear, engine on, for to long.

I don't want to start changing steering angle sensor or wheel sensors or abs pumps because everything is working as it should

So brake pedal switch is first on the list coz often very simple things can cause serious looking faults.

When calibrating steering angle sensor and watching readings in measuring blocks sensor gives a value of -17degree when straight and wheels straight so I'll be looking into this as well.
Any idea why sensor can give such a reading, 17 degrees off thats a lot.

I know tat controller may not accept the calibration properly and seen that some people where doing calibration for even 2 hours until it got accepted.

What are you thought guys??

Cheers

[PsYcHe]

Could be an ABS sensor, or a wheel bearing on the way out, causing the signal to fluctuate. My PF did similar when the rear bearing went, damaged the sensor and half the stuff on the car shut down with a pile of fun beeps when you got in.. Was like an 80's arcade

[M-A8]

Interesting wheel bearing but there would be a noise at least when turning but there is nothing.

ABS sensor is another thing on the list, but would that cause a possible -17 degree reading on the steering wheel sensor when everything is in straight line??

Cheers PsYcHe, appreciated

[Architex_mA8tey]

i would have guessed at ABS sensor too. Has he got staggered wheels and tyres on it or are they all the same sizes? It also sounds like the symptoms that you get when the system is trying to sort out an imbalance in rolling radius between wheels etc. if the difference is more than 1-1.5% then the system just sees constant faults, worth a look anyways

[ainarssems]

To me it sounds like steering angle sensor has not been calibrated properly possibly after suspension or steering component change, wheel alignment.

[PsYcHe]

You'd have thought.. but I had no noise when mine went, though it was a rear..

[M-A8]

Just to update you base on your replies, which are very appreciated.

There was no work done to suspension or steering components.

Could steering angle sensor decalibrate itself just like that if this is an issue with sensors calibration??

No other work done to the car.

Wheels he has got for at least a year now, longer than existence of this faults, are 275/35/20, which I think are incorrect coz on 20" he should have 255/35/20, correct??

No noise from the wheel bearings.
PsYcHe, when your one went, is thats when you got all the faults and beebs, or it started before it went??

After some test drive today for first two hours nothing, hard breakings, turns and breakings, nothing, but when drove over the bumpy rail tracks the fault lights came on straight away, so could that be a poor connection (we will be stripping it down over the weekend after doing carbon on my car).

Causes are just inconsistent, for period of time errors come on during certain maneuvers then it all comes back to normal and something else completely different is causing same faults.

Very very weird

Now I doubt is a brake pedal switch at all.

ABS sensor as you suggested or wiring on ABS sensor.
Plus that calibration on steering wheels sensor, but the problem here is that each time login was accepted same as the whole procedure, but when wheels are straight there is exactly -17 degree reading.

Really confusing

[M-A8]

UPDATE

Address 01: Engine Labels: Redir Fail!
Part No SW: 4E1 910 409 B HW: 4E1 907 409 A
Component: 4.2L V8TDI G000AGMª0010
Revision: --H03--- Serial number: AUX3Z0FN310644
Coding: 0011773
Shop #: WSC 02313 785 00200
VCID: 23450019E25A0606A91-8076

3 Faults Found:
005663 - Glowplug for Cylinder 6 (Q15)
P161F - 001 - Open Circuit
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 191868 km
Time Indication: 0
Date: 2013.10.05
Time: 08:07:49

Freeze Frame:
RPM: 630 /min
Torque: 132.6 Nm
Speed: 0.0 km/h
Duty Cycle: 0.4 %
Voltage: 13.22 V
Duty Cycle: 24.9 %
Temperature: 28.8°C

000408 - Engine Oil Temp. Sensor (G8)
P0198 - 000 - Signal too High - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 0
Fault Frequency: 254
Reset counter: 255
Mileage: 191878 km
Time Indication: 0
Date: 2013.10.05
Time: 13:15:00

Freeze Frame:
RPM: 2016 /min
Torque: 620.1 Nm
Speed: 122.7 km/h
Duty Cycle: 51.7 %
Voltage: 14.29 V
Temperature: 23.4°C
Temperature: 75.6°C

005715 - Please check DTC Memory of ABS Controller
P1653 - 002 - - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 0
Fault Frequency: 254
Reset counter: 255
Mileage: 191878 km
Time Indication: 0
Date: 2013.10.05
Time: 13:15:03

Freeze Frame:
RPM: 2058 /min
Torque: 581.1 Nm
Speed: 128.6 km/h
Duty Cycle: 48.9 %
Voltage: 14.29 V
Bin. Bits: 00101000
Torque: 760.5 Nm

Readiness: 0 0 0 0 0

-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 09E-927-156.lbl
Part No SW: 4E1 910 156 S HW: 09E 927 156 B
Component: AG6 09E 4,2 TDI RdW 0010
Revision: --H01--- Serial number: 0096931
Coding: 0000001
Shop #: WSC 02313 785 00200
VCID: 3365F05952BA9686591-8066

2 Faults Found:
006231 - Load Signal
P1857 - 001 - Error Message from ECU - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 0
Fault Frequency: 254
Reset counter: 255
Mileage: 191879 km
Time Indication: 0
Date: 2013.10.05
Time: 13:15:08

Freeze Frame:
RPM: 1984 /min
RPM: 1952 /min
RPM: 2848 /min
(no units): 70.0
(no units): 31.0
Temperature: 40.0°C
T.B. Angle: 26.3°

001923 - Shift Monitoring
P0783 - 000 - 3-4 Shift - Intermittent
Freeze Frame:
Fault Status: 00110000
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 195897 km
Time Indication: 0
Date: 2013.11.09
Time: 19:51:52


-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 4E0-910-517.lbl
Part No SW: 4E0 910 517 B HW: 4E0 614 517 BC
Component: ESP 5.7 allrad H46 0510
Coding: 0008557
Shop #: WSC 02313 000 00000
VCID: 224B051DFD400F0EA27-8077

3 Faults Found:
00003 - Control Module
014 - Defective
00778 - Steering Angle Sensor (G85)
008 - Implausible Signal - Intermittent
18265 - Load Signal
P1857 - 000 - Error Message from ECU - Intermittent


Address 34: Level Control Labels: 4E0-910-553.lbl
Part No SW: 4E0 910 553 H HW: 4E0 907 553 F
Component: LUFTFDR.-CDC H06 4480
Coding: 0012210
Shop #: WSC 02313 785 00200
VCID: 285F17359B7CE55EFC3-807D

1 Fault Found:
01772 - Signal from Level Control Pressure Sensor (G291)
008 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 3
Fault Frequency: 1
Reset counter: 208
Mileage: 195611 km
Time Indication: 0
Date: 2013.11.09
Time: 11:08:34

[Lee S]

Originally Posted by M-A8

Wheels he has got for at least a year now, longer than existence of this faults, are 275/35/20, which I think are incorrect coz on 20" he should have 255/35/20, correct??

Not necessarily, no. I have standard Audi SE 20" alloys on my D3 and they have 275/35/20 fitted as standard and I believe the S8 had 265/35/20 fitted as standard. Not sure about 255s.

[PsYcHe]

255/35/20 were a standard fit too.. depends if it's 8.5 or 9 rims.

The errors were after the bearing went, and no noise from the bearing beforehand..

Though looking at the errors on VCDS it does seem to be something more electrical...