A4 b6 AWX Intermittent ABS & ESP Light Illuminated

Hi,

Intermittent ABS & ESP Light Illuminated, any ideas what the cause is - VAG.com scan below:

Cheers

VAG-COM Version: Release 311.2-N


Chassis Type: 8E - Audi A4 B6
Scan:

01,02,03,08,09,15,16,17,26,36,37,45,46,55,56,63,

76

Address 01

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Controller: 038 906 019 FP
Component: 1,9l R4 EDC 0000SG 1467
Coding: 00002
Shop #: WSC 63351
WAUZZZ8E52A066247 AUZ6Z0A0155075
1 Fault Found:
17664 - Engine Coolant Temp Sensor (G62): Open

or Short to Plus
P1256 - 35-10 - - - Intermittent
Readiness: N/A

Address 03

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Controller: 8E0 614 517
Component: ABS/ESP front 1726
Coding: 04255
Shop #: WSC 00182
2 Faults Found:
01826 - Sensor for Steering Angle (G85): Supply

Voltage Terminal 30
35-10 - - - Intermittent
00287 - ABS Wheel Speed Sensor: Rear Right (G44)
30-10 - Open or Short to B+ -

Intermittent

Address 08

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Controller: 8E0 820 043
Component: A4 Klimaautomat 0711
Coding: 00000
Shop #: WSC 63351
No fault code found.

Address 09

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Controller: 8E0 907 279
Component: int. Lastmodul RDW 0510
Coding: 00001
Shop #: WSC 63351
No fault code found.

Skipping Address 15-Airbags

Address 16

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Controller: 8E0 953 549 F
Component: Lenksáulenmodul 0304
Coding: 00001
Shop #: WSC 63351
No fault code found.

Address 17

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Controller: 8E0 920 950 F
Component: KOMBI+WEGFAHRS. RB4 D21
Coding: 00400
Shop #: WSC 00001
WAUZZZ8E52A066247 AUZ6Z0A0155075
2 Faults Found:
01039 - Coolant Temperature Sensor (G2)
30-10 - Open or Short to B+ -

Intermittent
01304 - Radio
49-00 - No Communications

Address 45

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Controller: 8E0 951 177
Component: Innenraumueberw. 0504
Coding: 00001
Shop #: WSC 00000
1 Fault Found:
01463 - Alarm triggered by Sensor for anti-theft

alarm System
43-00 - Closed

Address 46

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Controller: 8E0 959 433 AJ
Component: Komfortgerát T9F 0617
Coding: 06859
Shop #: WSC 63351
10 Faults Found:
01134 - Alarm Horn (H12)
29-00 - Short to Ground
01370 - Alarm triggered by Interior Monitoring
35-00 - -
00962 - Alarm via. Tilt Sensor
35-00 - -
01368 - Alarm triggered by Luggage Compartment

Switch
35-00 - -
01369 - Alarm triggered by Hood Switch
35-00 - -
01561 - Left Rear Door
59-00 - Can't Unlock
01561 - Left Rear Door
61-00 - Won't De-Safe
01562 - Right Rear Door
59-00 - Can't Unlock
01562 - Right Rear Door
61-00 - Won't De-Safe
01559 - Drivers Door
61-00 - Won't De-Safe

End

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Controller: 8E0 614 517
Component: ABS/ESP front 1726
Coding: 04255
Shop #: WSC 00182
2 Faults Found:
01826 - Sensor for Steering Angle (G85): Supply Voltage Terminal 30
35-10 - - - Intermittent
00287 - ABS Wheel Speed Sensor: Rear Right (G44) 30-10 - Open or Short to B+ -

Intermittent

Address 08

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Cheers, Im guessing this is actually likely to be a wiring issue, supply or earth to the sensors , as opposed to both the sensors themselves being faulty??

OK chaps here is the situation, I have tried to clear the codes. The steering angle sensor one has now gone. I am left with 00287 - ABS Wheel Speed Sensor: Rear Right (G44) 30-10 - Open or Short to B+ - Intermittent.
Now here is the interesting thing, when I go into measuring blocks it tells me with the car competently stationary that all four wheels are turning at 1 kph !!! - all 4 wheels should measure zero if the car isn't going anywhere surly ???
. I've driven the car down the road with a passenger monitoring the measuring blocks for ABS speed sensors and they all go up equally as they should when driven in a straight line but when cars at a complete stand still they all ready 1 km/h ??!!!
This leads me to believe that it is not just one rear sensor which is shot (Normally with one sensor down it will show 0 kph on the shot sensor wheel measuring block whilst the other three wheels will increase with speed equally.)
I think my next step will be to measure the continuity of the rear right speed sensor that VAG-com is saying is defective, if I get the same reading from this allegedly defective sensor as another then its seem likely to me a wiring fault somewhere which aint good news as will be a right *unt to find!!!!
I'm not in the business of just replacing the sensor in the hope that it cures the problem as they are not that cheap and tend to be well and truly seized in place.
Any views?

pauldazzle said:

I wonder whether it could be a short causing resisitence & effecting readings.
I had an aftermarket CTS fail that caused the fuel gauge to read incorrectly too. Stuck a new VAG CTS in & all was ok again.

Click to expand...

cheers, yeah i might as well get that sorted as a starting point as its needs doing and is an easy fix

the problem turned out to be an abs reluctor ring which was rusted to bits, hub renewed and problem solved. Be sure to check this ring out before spending money on abs sensor