Intermittent power steering fault HELP!!! Audi A3 2.0tdi cr140 2011

[Jeolfh]

First thread I’ve done and sorry for the long one!

Basically over the last couple of months I’ve been getting an intermittent power steering fault where it’s solid, it’s been getting worse.

So what happens is when I turn the ignition on the red power steering light and yellow traction control light comes on and does loads of beeps saying stability fault. Sometimes it will go off within a few minutes and sometimes I’ll do a whole journey where it stays on and continues to give me no power steering.
When it does decide to work it will work for the whole journey without faults will I turn it off, then when I start it again it’s pot luck if it wants to work.

I’ve got the g85 steering angle sensor fault and j500 steering control modulE

Since the problem I have replaced
-steering control module (same part code and been coded to car)
-squib ring (same part code)
-steering angle sensor (weirdly didn’t have one already)

I have had my car scanned with vcds a few weeks ago and that’s when I then replaced parts as the steering angle sensor wasn’t reading an angle.

Today I had someone else then scan it as I wanted the steering angle sensor calibrated but when he was trying to go through the steps it was saying no signal/communication to the sensor or module so wasn’t available to do the calibration.

I also found out that the guy before me had the steering rack replaced a couple of years ago but he said he never had steering faults.

Has anyone got any advice on where to start looking? I’ve also changed the battery before anyone asks

In the comment is the vcds log

 

[Jeolfh]

Tuesday,23,June,2020,14:40:16:23195
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 20.4.0.1 (x64) HEX-V2 CB: 0.4508.4
Data version: 20200331 DS317.0
www.Ross-Tech.com


VIN: WAUZZZ8P2CA099788 License Plate: J4EOL
Mileage: 138620km-86134mi Repair Order: 1



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


Chassis Type: 8P-AU35 (7N0)
Scan: 01 03 08 09 15 16 17 19 25 42 44 46 47 52 56 61 62 72

VIN: WAUZZZ8P2CA099788 Mileage: 138620km-86134miles 01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- Status: Cannot be reached 1100
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: Malfunction 0010
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
25-Immobilizer -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: Cannot be reached 1100
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
61-Battery Regul. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CFFB) Labels:. 03L-906-018-CFF.clb
Part No SW: 03L 906 018 AB HW: 03L 906 018 AG
Component: R4 2.0l TDI H25 9978
Revision: 41H25--- Serial number: AUX7Z0KDFN10E3
Coding: 00190012040501080000
Shop #: WSC 65535 000 00000
ASAM Dataset: EV_ECM20TDI01103L906018AB 003011
ROD: EV_ECM20TDI01103L906018AB.rod
VCID: 6A8C34BECCFA40EBED6-803E

No fault code found.
Readiness: 0 0 0 0 0

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104) Labels:. 1K0-907-379-60EC1F.clb
Part No SW: 1K0 907 379 BJ HW: 1K0 907 379 BJ
Component: ESP MK60EC1 H31 0121
Revision: 00H31001
Coding: 13424012092B0003C81202EC90210092380800
Shop #: WSC 06314 000 00000
VCID: 7BA201FAB3E0C963060-802E

2 Faults Found:
00778 - Steering Angle Sensor (G85)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 95
Mileage: 138625 km
Time Indication: 0
Date: 2020.06.23
Time: 15:05:58

Freeze Frame:
Count: 3
Count: 2
Count: 29184
Count: 166
Count: 51712
Count: 0
Count: 65025
Count: 0

01309 - Power Steering Control Module (J500)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 3
Fault Frequency: 1
Reset counter: 95
Mileage: 138625 km
Time Indication: 0
Date: 2020.06.23
Time: 15:05:58

Freeze Frame:
Count: 3
Count: 2
Count: 29184
Count: 8213
Count: 51712
Count: 0
Count: 65025
Count: 0


-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8P0-820-043.lbl
Part No SW: 8P0 820 043 BM HW: 8P0 820 043 BM
Component: KlimavollautomatH09 0180
Revision: 000457 Serial number: 8P0820043BM
Shop #: WSC 00000 000 00000
VCID: 78A81EF68ED6E27B6B2-802C

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519) Labels:. 8P0-907-063.clb
Part No SW: 8P0 907 063 N HW: 8P0 907 063 N
Component: BCM PQ35 M 110 0667
Revision: AJ110667
Coding: 4E000A2FA005F0C0207041E00500815C427A29AA004DC12AE40087800041
Shop #: WSC 06314 123 12345
VCID: 3FDAB5EAE77815436A8-806A

Subsystem 1 - Part No SW: 8P2 955 119 F HW: 8P2 955 119 F Labels: 1KX-955-119.CLB
Component: Wischer AU350 H11 0050
Coding: 00DD13

Subsystem 2 - Part No: 8P0 951 177
Component: Innenraumuebe H04 0020

Subsystem 3 - Part No: 1K0 951 605 C
Component: LIN BACKUP HO H05 1501

Subsystem 4 - Part No: 1K0 907 719 C
Component: Neigungssenso 005 0003

3 Faults Found:
00778 - Steering Angle Sensor (G85)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 6
Fault Frequency: 1
Reset counter: 95
Mileage: 138625 km
Time Indication: 0
Date: 2020.06.23
Time: 15:01:02

Freeze Frame:
Term 15 On
Voltage: 14.35 V
ON
ON
Term 50 On
OFF
OFF

01309 - Power Steering Control Module (J500)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 6
Fault Frequency: 1
Reset counter: 95
Mileage: 138625 km
Time Indication: 0
Date: 2020.06.23
Time: 15:01:02

Freeze Frame:
Term 15 On
Voltage: 14.35 V
ON
ON
Term 50 On
OFF
OFF

01134 - Alarm Horn (H12)
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 4
Fault Frequency: 1
Reset counter: 95
Mileage: 138625 km
Time Indication: 0
Date: 2020.06.23
Time: 15:06:46

Freeze Frame:
Term 15 Off
Voltage: 14.25 V
OFF
ON
Term 50 Off
OFF
OFF


-------------------------------------------------------------------------------
Address 15: Airbags (J234) Labels:* 8P0-959-655-10.clb
Part No SW: 8P0 959 655 S HW: 8P0 959 655 S
Component: Airbag AU1042 H09 0250
Revision: -------- Serial number: 003JU0057YLX
Coding: 30314238303830303037554A305238503053
Shop #: WSC 06314 000 00000
ASAM Dataset: EV_Airba10AURB4 001001
ROD: EV_Airba10AURB4.rod
VCID: 52FC8C5E446AE82BB56-8006

Crash sensor for side airbag: driver side:
Serial number: 3572DRB40000E2312A4M

Crash sensor for side airbag: front passenger side:
Serial number: 3582DRB40000E2649B4.

Crash sensor for side airbag: rear: driver side:
Serial number: 35128RB4000066106DBI

Crash sensor for side airbag: rear: passenger side:
Serial number: 35228RB40000671AB67O

Crash sensor for front airbag: driver side:
Serial number: 35547RB40000683D983U

Crash sensor for front airbag: front passenger side:
Serial number: 35647RB40000683D984W

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 8P0-953-549.lbl
Part No SW: 8P0 953 549 K HW: 8P0 953 549 K
Component: J0527 H38 0070
Coding: 0002111
Shop #: WSC 12345 123 12345
VCID: 46D4A00EB4A2448B29E-8012

Subsystem 1 - Part No: XXXXXXXXXXX
Component: E0221 H02 0100

1 Fault Found:
01304 - Radio
004 - No Signal/Communication

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8P0-920-xxx-17-MY8.clb
Part No SW: 8P0 920 983 HW: 8P0 920 983
Component: KOMBIINSTR. VDO H02 0150
Revision: D0H02002 Serial number: 224DK002012111
Coding: 0260428
Shop #: WSC 12345 123 12345
VCID: 77AA1DCA83C8ED03628-8022

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533) Labels:. 7N0-907-530-V2.clb
Part No SW: 7N0 907 530 N HW: 1K0 907 951
Component: J533 Gateway H43 1623
Revision: H43 Serial number: 241111F1002587
Coding: 352103
Shop #: WSC 06314 123 12345
VCID: 3B22C1FAF3600963460-806E

2 Faults Found:
00778 - Steering Angle Sensor (G85)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 95
Mileage: 138625 km
Time Indication: 0
Date: 2020.06.23
Time: 15:00:33

01309 - Power Steering Control Module (J500)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 95
Mileage: 138625 km
Time Indication: 0
Date: 2020.06.23
Time: 15:00:33


-------------------------------------------------------------------------------
Address 25: Immobilizer Labels: 1K0-920-xxx-25.clb
Part No SW: 8P0 920 983 HW: 8P0 920 983
Component: KOMBIINSTR. VDO H02 0150
Revision: D0H02002 Serial number: AUX7Z0KDFN10E3
Shop #: WSC 00000 000 00000
VCID: 77AA1DCA83C8ED03628-8022

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver Labels: 8P0-959-801-MIN3.lbl
Part No SW: 8P0 959 801 Q HW: 8P0 959 801 Q
Component: Tuer-SG H04 0101
Coding: 0131764
Shop #: WSC 06314 000 00000
VCID: 49CEAB32A5BCABF3C4C-801C

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist
Cannot be reached

-------------------------------------------------------------------------------
Address 47: Sound System Labels: 8Px-035-382.lbl
Part No SW: 8P4 035 382 E HW: 8P4 035 382 E
Component: AB2 SUBWOOFERBOXH07 0180
Revision: 00006 Serial number: 92158127158348
Shop #: WSC 00000 000 00000
VCID: 3634D0CEC442D40BB9E-8062

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. Labels:. 1K0-959-702-MIN3.clb
Part No SW: 8P0 959 802 Q HW: 8P0 959 802 Q
Component: Tuer-SG H04 0101
Coding: 0131764
Shop #: WSC 06314 000 00000
VCID: 4ACC943EA0BAA0EBCD6-801E

No fault code found.

-------------------------------------------------------------------------------
Address 61: Battery Regul. (J840) Labels:. 1K0-907-534.clb
Part No SW: 7N0 907 534 HW: 1K0 907 951
Component: Batt.regelung H43 1623
Serial number: 241111F1002587
Coding: F30F185A
Shop #: WSC 06314 123 12345
VCID: 71BE23D2E1ACB333ACC-8024

Subsystem 1 - Part No SW: 1K0 915 181 H HW: 1K0 915 181 A
Component: J367-BDM H07 0180
Serial number: 00000000008900158486

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left Labels: 8P4-959-801.lbl
Part No SW: 8P4 959 801 F HW: 8P4 959 801 F
Component: Tuer-SG H04 0050
Coding: 0131216
Shop #: WSC 06314 000 1012544
VCID: 42DCBC1E988A78AB056-8016

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right Labels: 8P4-959-802.lbl
Part No SW: 8P4 959 802 F HW: 8P4 959 802 F
Component: Tuer-SG H04 0050
Coding: 0131216
Shop #: WSC 06314 000 1012544
VCID: 43D2B91A879071A30E0-8016

No fault code found.

End----(Elapsed Time: 01:10, VBatt start/end: 12.4V/12.4V. VIgn 0.0V)------

 

[Jeolfh]

Address 44: Steering Assist
Cannot be reached

Where is the power assist module?

 

[reverseproxy]

My guess is the power steering rack is ******. What generation rack are you running?

Have you went into VCDS and turned the steering wheel under the steering wheel / groups to check if it's registering the steering assist / torque.

You could try disconnecting the battery and recalibration of the rack again (full lock left, full lock right, centre and drive). I vaguely recall seeing a post about steering racks not calibrating if there's a fault with the wheel speed sensor or ABS unit somewhere.

I don't have the VW / Audi manuals to hand, so couldn't tell you the controller location, most likely behind the steering wheel or passenger side with a CCM module.

EDIT
J500 is the main "computer" for the power steering rack itself, there's no communication to that. You might want to check the fuses / earth's as it's possible there's a ****** earth. I can't remember fully but on my old Golf the power to the Electric Steering Rack ran from a fusable link next to the battery (SA80 I believe) I think it was Fuse number 2.

EDIT2
When my rack was failing, it used to give me the warning beeps (no stability error). I would just get the orange wheel occasionally and then it would go out when driving, usually a hard pothole would cause the alarm to trigger. Eventually when driving I got the dreaded RED Steering Wheel and my power steering was shutdown. Eventually I replaced the rack with a Gen2 unit which fixed the car after calibration.

If the rack is OK, my guess is wiring, or you have a fault with your Can Controller / Gateway

 

[Jeolfh]

My guess is the power steering rack is ******. What generation rack are you running?

Have you went into VCDS and turned the steering wheel under the steering wheel / groups to check if it's registering the steering assist / torque.

You could try disconnecting the battery and recalibration of the rack again (full lock left, full lock right, centre and drive). I vaguely recall seeing a post about steering racks not calibrating if there's a fault with the wheel speed sensor or ABS unit somewhere.

I don't have the VW / Audi manuals to hand, so couldn't tell you the controller location, most likely behind the steering wheel or passenger side with a CCM module.

EDIT
J500 is the main "computer" for the power steering rack itself, there's no communication to that. You might want to check the fuses / earth's as it's possible there's a ****** earth. I can't remember fully but on my old Golf the power to the Electric Steering Rack ran from a fusable link next to the battery (SA80 I believe) I think it was Fuse number 2.

The guy tried to do a basic calibration and calibrations through a few things but it was saying not available and under the power steering it wouldn’t even let him into that file.

It had a rack 2 years ago so hopefully it isn’t that, I think it’s a gen 3 rack.

I’ll check the fuses by the battery, I’m sure I know where that one is. Where would the earths be for the control module do you know?
Thanks for the reply

 

[reverseproxy]

The calibrations won't work if there's a fault with the controller or gateway. Looking at your VCDS scan it's having problems connecting to them all. Gen3 racks aren't really failure prone, so it's possibly an earth (or dying battery/alternator perhaps - might want to get those tested on the offchance) as I know weak Batteries cause havoc with VW and electronics.

The fusable link I'm 99% sure is fuse number 2 (or 3), I just remember it was an 80 Amp, it should be in your owners manual though which one you need.

The earths for the control module, you'd have to check online via pics. I did have a copy of the manuals from Elsawin but they're on a HDD that's dead at the moment. I'll see if I can find them for you

Just as a note, I'm fairly sure on the Gen3 rack, everything is built into the actual rack (G85, J500) and the other.

 

[reverseproxy]

https://forums.ross-tech.com/showth...ation-with-J500-Power-Steering-Control-Module

Read post #2 reference Alternator test and Wiring.

If you've got a ****** wiring, or ****** battery, the controller isn't going to like it. Get the old multimeter out do a drop test

 

[Jeolfh]

The calibrations won't work if there's a fault with the controller or gateway. Looking at your VCDS scan it's having problems connecting to them all. Gen3 racks aren't really failure prone, so it's possibly an earth (or dying battery/alternator perhaps - might want to get those tested on the offchance) as I know weak Batteries cause havoc with VW and electronics.

The fusable link I'm 99% sure is fuse number 2 (or 3), I just remember it was an 80 Amp, it should be in your owners manual though which one you need.

The earths for the control module, you'd have to check online via pics. I did have a copy of the manuals from Elsawin but they're on a HDD that's dead at the moment. I'll see if I can find them for you

Just as a note, I'm fairly sure on the Gen3 rack, everything is built into the actual rack (G85, J500) and the other.

If you could find them that would be awesome!
I did put a new battery on and it did no help so I returned it and kept the old one I think it is fuse 2 as I bought a 80a fuse for it to replace but never actually replaced it. I just want a working car

 

[reverseproxy]

If you could find them that would be awesome!
I did put a new battery on and it did no help so I returned it and kept the old one I think it is fuse 2 as I bought a 80a fuse for it to replace but never actually replaced it. I just want a working car

How recently did you put the battery on. Assuming the obvious here, but the connections are tight on it?

If the alternator is ******** it won't charge the battery properly. Only way I can think of load testing it off hand would be having everything running like lights, air con, turning steering etc to put a load on it, and then measuring the voltage at battery to see if it's getting the 14.7v

I'd check the multimeter though to make sure you haven't got a voltage drop between alternator/battery/starter and any earths on the vehicle. This is starting to sound more like a wiring or earthing problem to me.

If the fusable link has blown then you wouldn't really get any power steering whatsoever. I can't think of the Terminals, I think Terminal15 is +12v switched and Terminal30 is +12v permanent (or vice versa). I haven't really been involved in these for ages now. Just got back into VAG again.

 

[Jeolfh]

https://forums.ross-tech.com/showth...ation-with-J500-Power-Steering-Control-Module

Read post #2 reference Alternator test and Wiring.

If you've got a ****** wiring, or ****** battery, the controller isn't going to like it. Get the old multimeter out do a drop test

Reading that link I read to where they said there’s a big connector block behind the drivers side light... I’m going to check that because it started to first start being faulty once I changed my bulbs so I have a feeling it could be that (hoping)!!

 

[Jeolfh]

How recently did you put the battery on. Assuming the obvious here, but the connections are tight on it?

If the alternator is ******** it won't charge the battery properly. Only way I can think of load testing it off hand would be having everything running like lights, air con, turning steering etc to put a load on it, and then measuring the voltage at battery to see if it's getting the 14.7v

I'd check the multimeter though to make sure you haven't got a voltage drop between alternator/battery/starter and any earths on the vehicle. This is starting to sound more like a wiring or earthing problem to me.

If the fusable link has blown then you wouldn't really get any power steering whatsoever. I can't think of the Terminals, I think Terminal15 is +12v switched and Terminal30 is +12v permanent (or vice versa). I haven't really been involved in these for ages now. Just got back into VAG again.

I put a multimeter on the battery before and it was all the correct numbers, yes battery’s been on and off many times recently especially when I’ve been changing the sensors and control module as airbag had to come off

 

[Jeolfh]

How have I only just made an account on the audi forum!? It’s nice to not get sarcastic people from Facebook

 

[reverseproxy]

Reading that link I read to where they said there’s a big connector block behind the drivers side light... I’m going to check that because it started to first start being faulty once I changed my bulbs so I have a feeling it could be that (hoping)!!

Good luck, take a good look at the connections for broken wiring. The wiring itself (if it's the same as my Golf) it runs down the inside of the Passenger wheel arch towards the rack, that point however seems to be common on that article. No idea why, but if it makes it an easy fix all the better

 

[Jeolfh]

Good luck, take a good look at the connections for broken wiring. The wiring itself (if it's the same as my Golf) it runs down the inside of the Passenger wheel arch towards the rack, that point however seems to be common on that article. No idea why, but if it makes it an easy fix all the better

Hopefully I’ll find it, thanks for the advice and I’ll keep you updated, can’t do it for a few days S it’s going into the body shop after being rear ended by a lorry ( luckily only damaged the bumper )

 

[reverseproxy]

Hopefully I’ll find it, thanks for the advice and I’ll keep you updated, can’t do it for a few days S it’s going into the body shop after being rear ended by a lorry ( luckily only damaged the bumper )

That's fine, I have to sleep anyway up early to take car for it's annual timing belt change
Let us know how you get on

 

[Jeolfh]

So still haven’t solved it! I had the front end off yesterday and checked loads of wires, someone said on a group that it sounds like a faulty abs wheel speed sensor which was random but I read up and if that’s faulty then powersteering will have faults and not worth trying to fix powersteering before the sensor so ordered both rear sensors as the last time I got it scanned on vcds it said that sensor was faulty! So hopefully it gets me somewhere!


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