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Thread: Audi B6 A4 2003 1.8T BEX ABS issues

  1. #1
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    Audi B6 A4 2003 1.8T BEX ABS issues

    Hi everyone, I've spent a substantial amount of time now trying to figure this out and I could do with some experience to help me get this sorted.

    So the car is a 2003 Audi A4 Avant 8E fwd version with the 190PS BEX engine. I've uploaded a photo of the PR-Build here: PR codes

    As far as I'm aware the car is currently stock with no mods. Here is the full scan as of an hour ago:

    Code:
    Monday,02,September,2019,19:33:37:05644
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 19.6.1.0 (x64)  HEX-V2 CB: 0.4508.4
    Data version: 20190529 DS308.0
    www.Ross-Tech.com
    
    
    VIN: WAUZZZ8E94A157833   License Plate: 
    Mileage: 225840km-140330mi   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: 8E (8E - Audi A4/S4/RS4 B6/B7 (2001 > 2008))
    Scan: 01 02 03 08 09 0F 11 15 16 17 18 25 36 37 45 46 55 56 57 65
              67 69 75 76 77
     
    VIN: WAUZZZ8E94A157833   Mileage: 225840km-140330miles
    -------------------------------------------------------------------------------
    Address 01: Engine        Labels: 06B-906-018-AVJ.lbl
       Part No SW: 8E0 909 518 AS    HW: 8E0 909 018 A
       Component: 1.8L R4/5VT         0003  
       Coding: 0011511
       Shop #: WSC 63251 000 00000
       VCID: 015E70AA9D186ACFC57-5184
    
    4 Faults Found:
    17956 - Boost Pressure Regulation Valve (N75) 
                P1548 - 004 - Open Circuit
    16500 - Engine Coolant Temp. Sensor (G62) 
                P0116 - 008 - Implausible Signal - Intermittent
    16885 - Vehicle Speed Sensor 
                P0501 - 004 - Implausible Signal - Intermittent - MIL ON
    16891 - Idle Control System RPM 
                P0507 - 001 - Higher than Expected. - Intermittent
    Readiness: 0000 1000
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 8E0-614-517.lbl
       Part No: 8E0 614 517 
       Component: ABS/ESP front       3429  
       Coding: 04475
       Shop #: WSC 00000  
       VCID: 6596443A6C70A6EF59F-51F2
    
    4 Faults Found:
    00526 - Brake Light Switch (F) 
                36-10 - Open Circuit - Intermittent
    00290 - ABS Wheel Speed Sensor; Rear Left (G46) 
                27-10 - Implausible Signal - Intermittent
    00283 - ABS Wheel Speed Sensor; Front Left  (G47) 
                30-00 - Open or Short to Plus
    00778 - Steering Angle Sensor (G85) 
                27-00 - Implausible Signal
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC        Labels: 8E0-820-043.lbl
       Part No: 8E0 820 043 AA
       Component:   A4 Klimaautomat   1323  
       Coding: 00000
       Shop #: WSC 63251  
       VCID: 6098552E7352C3C7AA9-5160
    
    1 Fault Found:
    00819 - High Pressure Sensor (G65) 
                07-00 - Signal too Low
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect.        Labels: 8E0-907-279-8E2.lbl
       Part No: 8E0 907 279 F
       Component: int. Lastmodul  RDW 0517  
       Coding: 00001
       Shop #: WSC 63251  
       VCID: 3536D47A9C50166F29F-4B00
    
    1 Fault Found:
    01312 - Powertrain Data Bus 
                79-00 - Please Check Fault Codes
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 8E0-959-655-84.lbl
       Part No: 8E0 959 655 J
       Component: Airbag 8.4EP        1002  
       Coding: 0010602
       Shop #: WSC 63251 000 00000
       VCID: 3E24CB56AC66D537F85-5184
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel        Labels: 8E0-953-549.lbl
       Part No: 8E0 953 549 S
       Component: Lenksáulenmodul     0611  
       Coding: 01012
       Shop #: WSC 63251  
       VCID: 43D2BAA2C284B8DF97B-4B00
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 8E0-920-9xx-8E2.lbl
       Part No: 8E0 920 950 N
       Component: KOMBI+WEGFAHRS. RB4 D42  
       Coding: 00401
       Shop #: WSC 05314  
       VCID: 3430E97E972A0F671E1-5184
       WAUZZZ8E94A157833     AUZ6Z0C0253032
    
    1 Fault Found:
    01304 - Radio 
                49-00 - No Communications
    
    -------------------------------------------------------------------------------
    Address 45: Inter. Monitor        Labels: 8E0-951-177.lbl
       Part No: 8E0 951 177 
       Component: Innenraumueberw.   0704  
       Coding: 00001
       Shop #: WSC 00000  
       VCID: 6B8232028A94909F0FB-513C
    
    1 Fault Found:
    01463 - Alarm triggered by Sensor for anti-theft alarm System 
                43-00 - Closed
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels:. 8E0-959-433-MAX.clb
       Part No: 8E0 959 433 BC
       Component: Komfortgerát T3B    1311  
       Coding: 07115
       Shop #: WSC 63251  
       VCID: 73B22A62D2A4485FC7B-4B00
    
       Subsystem 1 - Part No: 8E2959802B
       Component: Tőrsteuer.FS BRM 0003  
    
       Subsystem 2 - Part No: 8E2959801B
       Component: Tőrsteuer.BF BRM 0003  
    
       Subsystem 3 - Part No: 8E0959801A
       Component: Tőrsteuer.HL BRM 0004  
    
       Subsystem 4 - Part No: 8E0959802A
       Component: Tőrsteuer.HR BRM 0004  
    
    3 Faults Found:
    01370 - Alarm triggered by Interior Monitoring 
                35-00 - -
    01561 - Rear left door 
                61-10 - Won't De-Safe - Intermittent
    01562 - Rear right door 
                61-00 - Won't De-Safe
    
    End----------(Elapsed Time: 05:49, VBatt start/end: 13.6V/13.5V)-----------
    The engine codes have only just popped up so I'll be getting to those in due course but the ABs is giving me the biggest headache at the moment.

    Ever since I got the car the ESP light would come on and off intermittently - mostly on then the ABS light started showing up. As I didn't have a VCDS cable I took it to a garage a couple of weeks ago to get it scanned and asked them to take a look. Their reader was giving faults for the two front ABS sensors. I asked them to replace them and they swapped them over for two Bosch ones.

    Here's where a bunch more problems started happening, CEL light came on and the dash would occasionally start warning ABS fault - take to an AUDI service center or something along those lines. At this point the speedo died as well. I started doing a load more reading and got a used ABS control module for Ł20 and ordered a VCDS cable from ilexa.

    I swapped out the ABS module, recoded it with my fancy new cable, recalibrated the steering angle sensor then cleared the codes - started the engine and everything appeared to be working, I drove about 20m down the road before all the lights came back.

    Before having the VCDS cable it was a bit of a scatter gun approach to trying to get this fixed, I'm hoping now you guys will be able to help me get this sorted properly.

    I've still got the old ABS module, and this new(er?) one I've tried measuring the wheel speed sensors for all 4 wheels on short test drives, this makes the car do some very weird things and kick in the esp. I can't quite tell if its just stopping the throttle or applying the brakes at this point. I took the front left wheel off, removed the sensor and cleaned the end of it and checked the reluctor ring, it seems solid and unbroken but there's a fair amount of corrosion on it. I've taken a video of me spinning the hub:ABS reluctor ring vid

    Can anyone shed some light on the codes i'm getting for the ABS sensor and the best things to check? It's pretty annoying not having the speedo on the car and would like to get this running properly again. The garage said the wheelspeed sensor/ABS sensor are two different parts on the end of this cable, how does the wheel speed sensor work for this car?

    Next on my to do list is:

    Recheck abs sensor wiring through wheel arch
    Recheck connections to ABS unit
    Look at the brake pedal sensor (very recent problem and not shown on previous scans)
    Check wiring of N75 boost pressure regulator/replace

    I'd love to hear some input on this before throwing a bunch more money at this willy nilly!

  2. #2
    NostraJackAss Jack@European_Parts's Avatar
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    Hello OP and welcome to the VCDS forum!

    JPPSG & RTFB the SSP's for design and function.

    https://forums.ross-tech.com/showthr...PSG-quot/page5

    http://wiki.ross-tech.com/wiki/index...ir_Information

    Brake light switch looks like it should be investigated, no?

    Did you check for vacuum leaks or shorted consumers such as the N75 or others?
    Can you clear all codes please & repost a complete auto-scan after idling 30 seconds to check FOD?
    European Parts Emporium/Performance / Immobilizer Solutions EPE
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    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
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  3. #3
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    Hi Jack,

    Thanks for the rapid response. Apologies for not fully following your guidline on posting, I'll make sure to do it properly to make reading it easier next time! Going to get the erWin guid soon.

    As the N75 has only turned up a couple of days ago I've not had a chance to check it out just yet. I'll investigate these two parts and report back.

    Thanks again.

  4. #4
    NostraJackAss Jack@European_Parts's Avatar
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    Please post the requested new scan data, OK?
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

  5. #5
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    Hi Jack,

    Here's the new auto scan after clearing the codes and letting the engine idle.

    Code:
    Monday,02,September,2019,22:47:18:05644
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 19.6.1.0 (x64)  HEX-V2 CB: 0.4508.4
    Data version: 20190529 DS308.0
    www.Ross-Tech.com
    
    
    VIN: WAUZZZ8E94A157833   License Plate: 
    Mileage: 225840km-140330mi   Repair Order: 
    
    
    Chassis Type: 8E (8E - Audi A4/S4/RS4 B6/B7 (2001 > 2008))
    Scan: 01 02 03 08 09 0F 11 15 16 17 18 25 36 37 45 46 55 56 57 65
              67 69 75 76 77
     
    VIN: WAUZZZ8E94A157833   Mileage: 225840km-140330miles
    -------------------------------------------------------------------------------
    Address 01: Engine        Labels: 06B-906-018-AVJ.lbl
       Part No SW: 8E0 909 518 AS    HW: 8E0 909 018 A
       Component: 1.8L R4/5VT         0003  
       Coding: 0011511
       Shop #: WSC 63251 000 00000
       VCID: 015E70AA9D186ACFC57-5160
    
    1 Fault Found:
    17956 - Boost Pressure Regulation Valve (N75) 
                P1548 - 004 - Open Circuit
    Readiness: 0110 1101
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 8E0-614-517.lbl
       Part No: 8E0 614 517 
       Component: ABS/ESP front       3429  
       Coding: 04475
       Shop #: WSC 00000  
       VCID: 6596443A6C70A6EF59F-51F2
    
    1 Fault Found:
    00283 - ABS Wheel Speed Sensor; Front Left  (G47) 
                30-00 - Open or Short to Plus
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC        Labels: 8E0-820-043.lbl
       Part No: 8E0 820 043 AA
       Component:   A4 Klimaautomat   1323  
       Coding: 00000
       Shop #: WSC 63251  
       VCID: 6098552E7352C3C7AA9-5160
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect.        Labels: 8E0-907-279-8E2.lbl
       Part No: 8E0 907 279 F
       Component: int. Lastmodul  RDW 0517  
       Coding: 00001
       Shop #: WSC 63251  
       VCID: 3536D47A9C50166F29F-4B1E
    
    1 Fault Found:
    01312 - Powertrain Data Bus 
                79-00 - Please Check Fault Codes
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 8E0-959-655-84.lbl
       Part No: 8E0 959 655 J
       Component: Airbag 8.4EP        1002  
       Coding: 0010602
       Shop #: WSC 63251 000 00000
       VCID: 3E24CB56AC66D537F85-5184
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel        Labels: 8E0-953-549.lbl
       Part No: 8E0 953 549 S
       Component: Lenksáulenmodul     0611  
       Coding: 01012
       Shop #: WSC 63251  
       VCID: 43D2BAA2C284B8DF97B-4B1E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 8E0-920-9xx-8E2.lbl
       Part No: 8E0 920 950 N
       Component: KOMBI+WEGFAHRS. RB4 D42  
       Coding: 00401
       Shop #: WSC 05314  
       VCID: 3430E97E972A0F671E1-5184
       WAUZZZ8E94A157833     AUZ6Z0C0253032
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 45: Inter. Monitor        Labels: 8E0-951-177.lbl
       Part No: 8E0 951 177 
       Component: Innenraumueberw.   0704  
       Coding: 00001
       Shop #: WSC 00000  
       VCID: 6B8232028A94909F0FB-513C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels:. 8E0-959-433-MAX.clb
       Part No: 8E0 959 433 BC
       Component: Komfortgerát T3B    1311  
       Coding: 07115
       Shop #: WSC 63251  
       VCID: 73B22A62D2A4485FC7B-4B1E
    
       Subsystem 1 - Part No: 8E2959802B
       Component: Tőrsteuer.FS BRM 0003  
    
       Subsystem 2 - Part No: 8E2959801B
       Component: Tőrsteuer.BF BRM 0003  
    
       Subsystem 3 - Part No: 8E0959801A
       Component: Tőrsteuer.HL BRM 0004  
    
       Subsystem 4 - Part No: 8E0959802A
       Component: Tőrsteuer.HR BRM 0004  
    
    1 Fault Found:
    01562 - Rear right door 
                61-00 - Won't De-Safe
    
    End----------(Elapsed Time: 06:05, VBatt start/end: 12.2V/14.2V)-----------

  6. #6
    NostraJackAss Jack@European_Parts's Avatar
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    These faults should be addressed first, no?
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

  7. #7
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    I will get to these for certain. I ran another scan after clearing the codes and producing that one and it's now showing everything clear?

    Scan attached:

    Code:
    Monday,02,September,2019,23:00:46:05644
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 19.6.1.0 (x64)  HEX-V2 CB: 0.4508.4
    Data version: 20190529 DS308.0
    www.Ross-Tech.com
    
    
    VIN: WAUZZZ8E94A157833   License Plate: 
    Mileage: 225840km-140330mi   Repair Order: 
    
    
    Chassis Type: 8E (8E - Audi A4/S4/RS4 B6/B7 (2001 > 2008))
    Scan: 01 02 03 08 09 0F 11 15 16 17 18 25 36 37 45 46 55 56 57 65
              67 69 75 76 77
     
    VIN: WAUZZZ8E94A157833   Mileage: 225840km-140330miles
    -------------------------------------------------------------------------------
    Address 01: Engine        Labels: 
       VCID: 55F674FA3D10366FC9F-5184
    
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 8E0-614-517.lbl
       Part No: 8E0 614 517 
       Component: ABS/ESP front       3429  
       Coding: 04475
       Shop #: WSC 00000  
       VCID: 6596443A6C70A6EF59F-51F2
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC        Labels: 8E0-820-043.lbl
       Part No: 8E0 820 043 AA
       Component:   A4 Klimaautomat   1323  
       Coding: 00000
       Shop #: WSC 63251  
       VCID: 6098552E7352C3C7AA9-5184
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect.        Labels: 8E0-907-279-8E2.lbl
       Part No: 8E0 907 279 F
       Component: int. Lastmodul  RDW 0517  
       Coding: 00001
       Shop #: WSC 63251  
       VCID: 3536D47A9C50166F29F-4B1E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 8E0-959-655-84.lbl
       Part No: 8E0 959 655 J
       Component: Airbag 8.4EP        1002  
       Coding: 0010602
       Shop #: WSC 63251 000 00000
       VCID: 3E24CB56AC66D537F85-5184
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel        Labels: 8E0-953-549.lbl
       Part No: 8E0 953 549 S
       Component: Lenksáulenmodul     0611  
       Coding: 01012
       Shop #: WSC 63251  
       VCID: 43D2BAA2C284B8DF97B-4B1E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 8E0-920-9xx-8E2.lbl
       Part No: 8E0 920 950 N
       Component: KOMBI+WEGFAHRS. RB4 D42  
       Coding: 00401
       Shop #: WSC 05314  
       VCID: 3430E97E972A0F671E1-5184
       WAUZZZ8E94A157833     AUZ6Z0C0253032
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 45: Inter. Monitor        Labels: 8E0-951-177.lbl
       Part No: 8E0 951 177 
       Component: Innenraumueberw.   0704  
       Coding: 00001
       Shop #: WSC 00000  
       VCID: 6B8232028A94909F0FB-513C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels:. 8E0-959-433-MAX.clb
       Part No: 8E0 959 433 BC
       Component: Komfortgerát T3B    1311  
       Coding: 07115
       Shop #: WSC 63251  
       VCID: 73B22A62D2A4485FC7B-4B1E
    
       Subsystem 1 - Part No: 8E2959802B
       Component: Tőrsteuer.FS BRM 0003  
    
       Subsystem 2 - Part No: 8E2959801B
       Component: Tőrsteuer.BF BRM 0003  
    
       Subsystem 3 - Part No: 8E0959801A
       Component: Tőrsteuer.HL BRM 0004  
    
       Subsystem 4 - Part No: 8E0959802A
       Component: Tőrsteuer.HR BRM 0004  
    
    1 Fault Found:
    01562 - Rear right door 
                61-00 - Won't De-Safe
    
    End----------(Elapsed Time: 05:48, VBatt start/end: 14.2V/14.1V)-----------
    I'm pretty certain that these will reappear after going on a very short drive. Is there anything that you would do to aid diagnosis when these codes come back?

  8. #8
    NostraJackAss Jack@European_Parts's Avatar
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    Did you RTFB the codes and test each item as specified in the RTFB?

    Did you log blocks with VCDS of each sensor and test wiring for each component?

    What is status of ignition switch?
    Ground points okay?
    Mechanical components check out as per RTFB?
    Last edited by Jack@European_Parts; 09-02-2019 at 05:24 PM.
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

  9. #9
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    Hi Simon,
    You should follow Jack's advice but if your main issue is the ABS, the first thing to do is double check the live data from N/S/F wheel speed sensor (G47) and load test the wiring to the ABS module from the sensor.
    Regards HMC

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