Sport Diff System Fault

[ValidatedS4]

Hi all I’m getting this fault after lowering my car on coilovers. Any ideas? I checked the sports diff and no visible leak. Maybe the right front wheel sensor has something to do with it?

This is my DD and I commute 60 miles a day. Driving on this will do some damage? The system fault has been been intermittent over the last week. It goes away after I turn the car off. but now it stays on.

IMG_2624.JPG

CURRENT ERRORS:

Mileage: 226830km-140945miles




01-Engine -- Status: OK 0000

03-ABS Brakes -- Status: Malfunction 0010

04-Steering Angle -- Status: OK 0000

05-Acc/Start Auth. -- Status: OK 0000

08-Auto HVAC -- Status: Malfunction 0010

09-Cent. Elect. -- Status: Malfunction 0010

15-Airbags -- Status: OK 0000

16-Steering wheel -- Status: OK 0000

17-Instruments -- Status: OK 0000

19-CAN Gateway -- Status: OK 0000

22-AWD -- Status: Malfunction 0010

36-Seat Mem. Drvr -- Status: OK 0000

42-Door Elect, Driver -- Status: OK 0000

44-Steering Assist -- Status: OK 0000

46-Central Conv. -- Status: OK 0000

52-Door Elect, Pass. -- Status: OK 0000

53-Parking Brake -- Status: OK 0000

56-Radio -- Status: OK 0000

5F-Information Electr. -- Status: OK 0000

62-Door, Rear Left -- Status: OK 0000

6C-Back-up Cam. -- Status: OK 0000

72-Door, Rear Right -- Status: OK 0000

A9-Struct. Borne Sound -- Status: OK 0000

 

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

Address 01: Engine (J623-CGXC)       Labels: 06E-907-551-CGW.clb

   Part No SW: 8K5 907 551 E    HW: 4G0 907 551 A

   Component: 3.0l V6 TFSIH07 0004  

   Revision: --H07---    

   Coding: 0A190034052600060000

   Shop #: WSC 06208 000 00000

   ASAM Dataset: EV_ECM30TFS0218K5907551E 001004

   ROD: EV_ECM30TFS0218K5907551E.rod

   VCID: 387F42868392A18258-806C




No fault code found.

Readiness: 0000 1100




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

Address 03: ABS Brakes (J104)       Labels: 8K0-907-379-V1.clb

   Part No SW: 8K0 907 379 CK    HW: 8K0 907 379 CK

   Component: ESP8 quattro  H09 0100  

   Revision: --------    Serial number: --------------

   Coding: 281D1A

   Shop #: WSC 06325 000 00000

   VCID: 0407E67687DA356284-8050




1 Fault Found:

01044 - Control Module Incorrectly Coded 

            000 -  - 

             Freeze Frame:

                    Fault Status: 01100000

                    Fault Priority: 3

                    Fault Frequency: 1

                    Reset counter: 160

                    Mileage: 226832 km

                    Time Indication: 0

                    Date: 2018.09.09

                    Time: 23:16:24




             Freeze Frame:

                    Hex Value: 0x0000

                    Hex Value: 0x07A2

                    Hex Value: 0x0015

                    Hex Value: 0x1098

                    Hex Value: 0x0000







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

Address 05: Acc/Start Auth. (J393)       Labels: 8K0-907-064-05.clb

   Part No SW: 8K0 907 064 GL    HW: 8K0 907 064 FL

   Component: BCM2 2.0      H11 0621  

   Revision: 00002001    

   Coding: 0B814000000000000000

   Shop #: WSC 06325 000 00000

   VCID: 000FEA6693C22942A0-8054




   Subsystem 1 - Part No SW: 8K0 959 754 BF    HW: 8K0 959 754 BF

   Component: FBSAUDIB8 IDG  H71 0083 

   Serial number: 0512000073908011    




   Subsystem 2 - Part No SW: 8K0 905 852 E    HW: 8K0 905 852 E

   Component: J764 ELV MLB  H40 0046 

   Serial number: 2312000245815007    




No fault code found.




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

Address 08: Auto HVAC (J255)       Labels: Redir Fail!

   Part No SW: 8K1 820 043 T    HW: 8K1 820 043 T

   Component: KLIMA 3 ZONEN H04 0121  

   Revision: C1000000    Serial number: 01071120120186

   Coding: 6618228000

   Shop #: WSC 06325 123 12345

   VCID: 39794782B098B88AA7-806C




1 Fault Found:

01207 - Control Module for Auxiliary Heater (J364) 

            004 - No Signal/Communication

             Freeze Frame:

                    Fault Status: 01100100

                    Fault Priority: 6

                    Fault Frequency: 1

                    Reset counter: 160

                    Mileage: 226832 km

                    Time Indication: 0

                    Date: 2018.09.09

                    Time: 23:16:23







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

Address 09: Cent. Elect. (J519)       Labels: 8K0-907-063.clb

   Part No SW: 8K0 907 063 DH    HW: 8K0 907 063 DH

   Component: BCM1 1.0      H16 0103  

   Revision: 08016001    Serial number: 00000510374702

   Coding: 26004094803CAFE0240040C300003D0D4F9C9308A2090221000008000000030100000030000000

   Shop #: WSC 06325 123 12345

   VCID: 78FF8286CB12618298-802C




   Subsystem 1 - Part No SW: 8K1 955 119 A    HW: 8T1 955 119   Labels: 1KX-955-119.CLB

   Component: WWS 091112  H07 0080 

   Serial number: SWF12110096839      

   Coding: 00FD11




   Subsystem 2 - Part No SW: 8U0 955 559 B    HW: 8U0 955 559 B  Labels: 8U0-955-559.CLB

   Component: G397_RLFS  H06 0002 

   Serial number: 20717211            

   Coding: 02005D




   Subsystem 3 - Part No SW: 8K0 941 531 AS    HW: 8K0 941 531 AS

   Component: E1 - LDS  H03 0031 

   Serial number: 00000000001109121855




   Subsystem 4 - Part No SW: 4H0 907 658     HW: 4H0 907 658 

   Component: AQ_Hum_Sensor  H03 0003 

   Serial number: 90B88756000000000001




1 Fault Found:

02258 - Door Opener Transmitter 

            004 - No Signal/Communication

             Freeze Frame:

                    Fault Status: 01100100

                    Fault Priority: 3

                    Fault Frequency: 1

                    Reset counter: 160

                    Mileage: 226832 km

                    Time Indication: 0

                    Date: 2018.09.09

                    Time: 23:16:28







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

Address 15: Airbags (J234)       Labels: 8K0-959-655.clb

   Part No SW: 8K0 959 655 P    HW: 8K0 959 655 P

   Component: AirbagVW-AU10 H45 0610  

   Serial number: 003KJD911L78  

   Coding: 303844354730303030304A55304C384B3053

   Shop #: WSC 13901 002 1048576

   ASAM Dataset: EV_AirbaECUVWAUDI010 003010

   ROD: EV_AirbaECUVWAUDI010_AU48.rod

   VCID: 4A9B084EED7E23123E-801E




   Seat occupied recognition: 

   Subsystem 1 - Part No SW: 8K0 959 339 C    HW: 8K0 959 339 C

   Component: BF-Gewichtss.  H02 0040 

   Serial number: 5810000R120000BA3G




   Crash sensor for side airbag: driver side: 

   Serial number: 6334MSME73204D1AD




   Crash sensor for side airbag: front passenger side: 

   Serial number: 6344MSME72053023$




   Crash sensor for side airbag: rear: driver side: 

   Serial number: 6352QSME0025065C7




   Crash sensor for side airbag: rear: passenger side: 

   Serial number: 6362QSME0125174EC




   Crash sensor for front airbag: driver side: 

   Serial number: 63732SME7622376E3




   Crash sensor for front airbag: front passenger side: 

   Serial number: 63832SME71224A76$




No fault code found.




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

Address 16: Steering wheel (J527)       Labels: 8K0-953-568.clb

   Part No SW: 8R0 953 568 S    HW: 8R0 953 568 S

   Component: Lenks.Modul   H07 0171  

   Revision: 00000000    Serial number: 20121112000765

   Coding: 000016

   Shop #: WSC 06325 000 00000

   VCID: 51A91F22082810CA7F-8004




   Component: E221 - MFL  H03 0004 




No fault code found.




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

Address 17: Instruments (J285)       Labels: 8T0-920-xxx-17.clb

   Part No SW: 8K0 920 982 L    HW: 8K0 920 982 L

   Component: KOMBIINSTR.   H35 0556  

   Revision: 00000000    Serial number: UVU72UCCD     

   Coding: 83BD09008301D705020000

   Shop #: WSC 06325 123 12345

   VCID: 3D715392A4B084AA8B-8068




No fault code found.




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

Address 19: CAN Gateway (J533)       Labels: 8T0-907-468.clb

   Part No SW: 8R0 907 468 N    HW: 8R0 907 468 C

   Component: GW-BEM 4CAN-M H11 0055  

   Revision: 1Y060027    Serial number: 2741Y12A31008A

   Coding: 80C303FF00

   Shop #: WSC 06325 000 00000

   VCID: 4A9B084EE57E23123E-801E




   Subsystem 1 - Part No SW: 8T0 915 181     HW: 8T0 915 181 

   Component: J367-BDMHella  H03 8041 

   Serial number: 7003958401          




No fault code found.




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

Address 22: AWD (J492)       Labels: 8K0-907-163.clb

   Part No SW: 8K0 907 163 B    HW: 8K0 907 163 A

   Component: 4 Wheel Drive H13 0100  

   Serial number: 002210120001119

   ASAM Dataset: EV_AllWheelDiffeQSPCAN 003019

   ROD: EV_AllWheelDiffeQSPCAN.rod

   VCID: 2F6D79DA76DC663A09-807A




1 Fault Found:

0333 - Oil Pressure and Temperature Sensor 

          C1004 F0 [008] - Oil Pressure Implausible

          Intermittent - Confirmed - Tested Since Memory Clear

             Freeze Frame:

                    Fault Status: 00000001

                    Fault Priority: 2

                    Fault Frequency: 5

                    Reset counter: 200

                    Mileage: 226797 km

                    Date: 2018.09.09

                    Time: 20:23:25




                    Voltage terminal 15: 13.75 V

                    Voltage terminal 30: 13.91 V

                    VPS Voltage: 13.91 V

                    Pump for all-wheel drive: voltage: 0.00 V

                    motor pump voltage terminal B: 3.91 V

                    Pump for all-wheel drive: current: -4.13 A

                    Torque distribution: 24 Nm

                    Torque distribution: specified value: 0 Nm

                    State KomonentenRegler: normal

                    Control Module temperature: 40 °C

                    Temperature output stage-Data: 33 °C

                    Temperature QCU-Data: 36 °C

                    Thermal load ECU-Data: 0 bar

                    Thermal load of all-wheel drive pump: 0.0 %

                    Oil pressure and oil temperature sensor temperature: 36 °C







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

Address 36: Seat Mem. Drvr (J136)       Labels: 8T0-959-760.clb

   Part No SW: 8K0 959 760 D    HW: 8K0 959 760 D

   Component: MEM-FS        H06 0076  

   Revision: AA000000    Serial number: 00000042048662

   Coding: 00581300000000000000

   Shop #: WSC 06325 000 00000

   VCID: 3B755D8ABAA48A9AB5-806E




No fault code found.




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

Address 42: Door Elect, Driver (J386)       Labels: 8K0-959-793.clb

   Part No SW: 8T0 959 793 P    HW: 8T0 959 793 G

   Component: TSG FA        H09 0304  

   Revision: --------    Serial number: --------------

   Coding: 011C03204E00410001

   Shop #: WSC 06325 000 00000

   VCID: 56A3EC3E21C677F2AA-8002




No fault code found.




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

Address 44: Steering Assist (J500)       Labels: 8K0-909-144.clb

   Part No SW: 8K0 909 144 F    HW: 8K0 909 144 B

   Component: RCEPS         H37 0507  

   Revision: 00001000    Serial number: 0025999891

   Coding: 000000010001

   Shop #: WSC 06324 123 12345

   ASAM Dataset: EV_RCEPSAU48X 008014

   ROD: EV_RCEPSAU48X.rod

   VCID: 346776B69FFA45E274-8060




No fault code found.




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

Address 46: Central Conv. (J393)       Labels: 8K0-907-064-46.clb

   Part No SW: 8K0 907 064 GL    HW: 8K0 907 064 FL

   Component: BCM2 2.0      H11 0621  

   Revision: 00002001    Serial number: 0186605730    

   Coding: 0106063A00FA404482B0013200000000

   Shop #: WSC 06324 123 12345

   VCID: 000FEA6693C22942A0-8054




   Subsystem 1 - Part No SW: 8K0 959 719 B    HW: 8K0 959 719 

   Component: GTO BF  H01 0080 

   Serial number: 00000000000000598619




   Subsystem 2 - Part No: 1K0 951 605 C

   Component: LIN BACKUP HO  H05 1501 




   Subsystem 3 - Part No SW: 8K0 959 591 B    HW: 8K0 959 591 

   Component: J245 PS050  H08 0043 




No fault code found.




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

Address 52: Door Elect, Pass. (J387)       Labels: 8K0-959-792.clb

   Part No SW: 8T0 959 792 P    HW: 8T0 959 792 G

   Component: TSG BF        H09 0304  

   Revision: --------    Serial number: --------------

   Coding: 011C03201E00410001

   Shop #: WSC 06325 123 12345

   VCID: 55A1EB323CC07CEAA3-8000




No fault code found.




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

Address 53: Parking Brake (----)       Labels: 8K0-907-801-V2.clb

   Part No SW: 8K0 907 801 L    HW: 8K0 907 801 J

   Component: EPB-4         H01 0003  

   Revision: --------    Serial number: 20000000170366

   ASAM Dataset: EV_ParkiBrake 001027

   ROD: EV_ParkiBrake_VW51.rod

   VCID: 387F42868392A18258-806C




No fault code found.




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

Address 56: Radio (R)       Labels: Redir Fail!

   Part No SW: 4G0 035 082 E    HW: 4G0 035 082 

   Component: Radio U SIRIU H60 0121  

   Revision: AB001007    Serial number: 156K/0C7663700

   Coding: 020007020100000001

   Shop #: WSC 06325 000 00000

   VCID: 224B80EE3D0EDB5296-8076




No fault code found.




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

Address 5F: Information Electr. (J794)       Labels: 4E0-035-6xx-5F.clb

   Part No SW: 8R1 035 746 C    HW: 8R1 035 746 B

   Component: H-BNT-NA      H44 0624  

   Revision: --------    Serial number: 204KW0C7542450

   Coding: 110200000206E3EF45028F4E00000403140000000000000000

   Shop #: WSC 06325 123 12345

   VCID: 377D41BA868CAEFA51-8062




   Subsystem 1 - Part No: 8R0 060 884 BA

   Component: NAR 2013  0703 




   Subsystem 2 - Part No SW: 8R0 919 604     HW: 8R0 919 604 

   Component: DU7 High  H41 0104 

   Serial number: A130J.0C2578337     




   Subsystem 3 - Part No SW: 8T0 919 611 K    HW: 8T0 919 611 B

   Component: E0380 Bedient  H02 0030 

   Serial number: 00000001321966      




   Subsystem 4 - Part No: 8R0 060 961 E

   Component: CD-Database  4949 




No fault code found.




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

Address 62: Door, Rear Left (J388)       Labels: 8K0-959-795.clb

   Part No SW: 8T0 959 795 Q    HW: 8T0 959 795 H

   Component: TSG HL        H07 0304  

   Revision: --------    Serial number: --------------

   Coding: 010C03204000210001

   Shop #: WSC 06325 000 00000

   VCID: 59B9E70250D8588A87-800C




No fault code found.




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

Address 6C: Back-up Cam.        Labels: 8T0-907-441.clb

   Part No SW: 8T0 907 441 C    HW: 4L0 907 441 B

   Component: J772__Rearview      0040  

   Revision: --H07---    Serial number: 525PA8-J2892U1

   Coding: 1000006

   Shop #: WSC 06325 000 00000

   VCID: 387F42864B92A18258-806C




No fault code found.




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

Address 72: Door, Rear Right (J389)       Labels: 8K0-959-794.clb

   Part No SW: 8T0 959 795 Q    HW: 8T0 959 795 H

   Component: TSG HR        H07 0304  

   Revision: --------    Serial number: --------------

   Coding: 010C03204000210001

   Shop #: WSC 06325 000 00000

   VCID: 59B9E70250D8588A87-800C




No fault code found.




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

Address A9: Struct. Borne Sound (J869)       Labels: 4H0-907-159.clb

   Part No SW: 8K0 907 159     HW: 4H0 907 159 A

   Component: SAS-GEN 2     H06 0005  

   Serial number: 121003200308

   ASAM Dataset: EV_SoundActuaGen2AU64X 002005

   ROD: EV_SoundActuaGen2AU64X.rod

   VCID: 72EBB0AEA56E0BD2A6-8026




No fault code found.




End-------------------------(Elapsed Time: 03:37)--------------------------

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[WeeKenny]

Clear all the codes and run it for a day and check again, looks like a lot of unrelated codes clouding the issue.

Check the ABS wiring wasn’t damaged when fitting the coil overs. The multi plugs get quite brittle and are easily damaged.

[Works2shoot]

Is your code similar to the ones posted in other SD fault threads?

[ValidatedS4]

Clear all the codes and run it for a day and check again, looks like a lot of unrelated codes clouding the issue.

Check the ABS wiring wasn’t damaged when fitting the coil overs. The multi plugs get quite brittle and are easily damaged.

I cleared all the other codes and updated the errors in my original post. The speed sensor error was gone and didn't re-appear.

The most relevant errors that remained were:

Address 03: ABS Brakes (J104) Labels: 8K0-907-379-V1.clb

Part No SW: 8K0 907 379 CK HW: 8K0 907 379 CK

Component: ESP8 quattro H09 0100

Revision: -------- Serial number: --------------

Coding: 281D1A

Shop #: WSC 06325 000 00000

VCID: 0407E67687DA356284-8050




1 Fault Found:

01044 - Control Module Incorrectly Coded

000 - -

Freeze Frame:

Fault Status: 01100000

Fault Priority: 3

Fault Frequency: 1

Reset counter: 160

Mileage: 226832 km

Time Indication: 0

Date: 2018.09.09

Time: 23:16:24




Freeze Frame:

Hex Value: 0x0000

Hex Value: 0x07A2

Hex Value: 0x0015

Hex Value: 0x1098

Hex Value: 0x0000

AND

Address 22: AWD (J492) Labels: 8K0-907-163.clb

Part No SW: 8K0 907 163 B HW: 8K0 907 163 A

Component: 4 Wheel Drive H13 0100

Serial number: 002210120001119

ASAM Dataset: EV_AllWheelDiffeQSPCAN 003019

ROD: EV_AllWheelDiffeQSPCAN.rod

VCID: 2F6D79DA76DC663A09-807A




1 Fault Found:

0333 - Oil Pressure and Temperature Sensor

C1004 F0 [008] - Oil Pressure Implausible

Intermittent - Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Status: 00000001

Fault Priority: 2

Fault Frequency: 5

Reset counter: 200

Mileage: 226797 km

Date: 2018.09.09

Time: 20:23:25




Voltage terminal 15: 13.75 V

Voltage terminal 30: 13.91 V

VPS Voltage: 13.91 V

Pump for all-wheel drive: voltage: 0.00 V

motor pump voltage terminal B: 3.91 V

Pump for all-wheel drive: current: -4.13 A

Torque distribution: 24 Nm

Torque distribution: specified value: 0 Nm

State KomonentenRegler: normal

Control Module temperature: 40 °C

Temperature output stage-Data: 33 °C

Temperature QCU-Data: 36 °C

Thermal load ECU-Data: 0 bar

Thermal load of all-wheel drive pump: 0.0 %

Oil pressure and oil temperature sensor temperature: 36 °C

[ValidatedS4]

Is your code similar to the ones posted in other SD fault threads?

Similar codes. People either got the oil pressure or temperature sensor reading as "Implausible".

I did a little more research and people's solutions were either Audi replacing the sport diff. I highly doubt this is a mechanical error.

Another possible (and more likely) the sensor either crapped out. Or there is a short or open with the sport diff oil pressure sensor.

I'm going to figure out which sensor is the oil pressure one and try to trace the line back. Another guy had a post where it ended up being corrosion near the battery which gave him the same sport diff fault.

[b8s4me]

Similar codes. People either got the oil pressure or temperature sensor reading as "Implausible".

I did a little more research and people's solutions were either Audi replacing the sport diff. I highly doubt this is a mechanical error.

Another possible (and more likely) the sensor either crapped out. Or there is a short or open with the sport diff oil pressure sensor.

I'm going to figure out which sensor is the oil pressure one and try to trace the line back. Another guy had a post where it ended up being corrosion near the battery which gave him the same sport diff fault.

My car is throwing the sport diff fault, has been for a while now. Your issue (which is the same as mine) is that the oil pressure/temp sensor on your diff are bad. You can replace the sensor (costs $250 new at Audi here), buy a used one on eBay and replace it, or buy a new/used diff. With all of these options you will need your VIN coded onto the sensor with the VAS501 dealer-only tool (VCDS will not work for this). I caution you if you replace your diff, as there are a few more steps involved (need to read some code off the diff to program it to the ECU). If you're replacing the sensor(s), do NOT replace both at once! The dealer should know this, but one sensor should be swapped and programmed at a time, as it reads the VIN programmed on the other sensor.

[ValidatedS4]

My car is throwing the sport diff fault, has been for a while now. Your issue (which is the same as mine) is that the oil pressure/temp sensor on your diff are bad. You can replace the sensor (costs $250 new at Audi here), buy a used one on eBay and replace it, or buy a new/used diff. With all of these options you will need your VIN coded onto the sensor with the VAS501 dealer-only tool (VCDS will not work for this). I caution you if you replace your diff, as there are a few more steps involved (need to read some code off the diff to program it to the ECU). If you're replacing the sensor(s), do NOT replace both at once! The dealer should know this, but one sensor should be swapped and programmed at a time, as it reads the VIN programmed on the other sensor.

found this: https://forums.ross-tech.com/showthr...erential-fault where a guy does the coding himself after replacing the sensor.

I'm going to buy a used diff and take the sensors off of that. I can't think of spending 500$ for 2 sensors when used diffs are going for less than $300 on ebay. I plan on buying the special 27mm socket as well.

found these links from another post:

http://workshop-manuals.com/audi/a4_...e_sender2g640/
http://workshop-manuals.com/audi/a4_...ting_measures/
http://www.audi-portal.com/en/diagno...u_11947.html#1

[b8s4me]

found this: https://forums.ross-tech.com/showthr...erential-fault where a guy does the coding himself after replacing the sensor.

I'm going to buy a used diff and take the sensors off of that. I can't think of spending 500$ for 2 sensors when used diffs are going for less than $300 on ebay. I plan on buying the special 27mm socket as well.

found these links from another post:

http://workshop-manuals.com/audi/a4_...e_sender2g640/
http://workshop-manuals.com/audi/a4_...ting_measures/
http://www.audi-portal.com/en/diagno...u_11947.html#1

Awesome info! Please update this thread if it all works out for you.

[ValidatedS4]

I can only find the sensors/sport diffs for the s5.

Can anyone confirm that the S4 and S5 share the same sport diff?

They only have the sensors part numbers for the S5, which are the same as the post from the ross-tech forums and the A8:

https://parts.audiusa.com/a/Audi_201...N/1340692.html

[Adamantium]

Pretty certain the diff is the same.

I just retrofitted the dynamic steering column and rack and the running gear for every other bit of the S5/RS5 is the same as the S4/RS4.

[ValidatedS4]

Pretty certain the diff is the same.

I just retrofitted the dynamic steering column and rack and the running gear for every other bit of the S5/RS5 is the same as the S4/RS4.

Thanks. I confirmed that it is the same diff as well.

Pulled the trigger on the brown sensor. Found one on ebay for ~$50. And the special 27mm socket for another ~$50.

Both are expected to ship by tomorrow. I will change out the brown sensor first and see what happens on Friday or over the weekend. If this sensor doesn't fix it, I'm assuming the other sensor (black) is the faulty one and will buy that one next. The coding using VAGCOM isn't hard at all. I'll keep everyone posted with the results.

[avantagg]

Thanks. I confirmed that it is the same diff as well.

Pulled the trigger on the brown sensor. Found one on ebay for ~$50. And the special 27mm socket for another ~$50.

Both are expected to ship by tomorrow. I will change out the brown sensor first and see what happens on Friday or over the weekend. If this sensor doesn't fix it, I'm assuming the other sensor (black) is the faulty one and will buy that one next. The coding using VAGCOM isn't hard at all. I'll keep everyone posted with the results.

I am getting the oil pressure fault on mine as well. Did you ever get yours solved?

[ValidatedS4]

Hi all fixed the issue after replacing with the sensor kit.

Did the sport diff service while I was at it by replacing the fluids after replacing the sensors.

Followed this post to clear and prime the lines: https://forums.ross-tech.com/index.php?threads/6426/Image1624581558.902410.jpg

If anyone needs the sensors (brown/black) let me know. Apparently mine we’re good still and the issues were the solenoids. Or if you need the thin wall socket to replace the sensors.

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[hardfive]

Hi all fixed the issue after replacing with the sensor kit.

Did the sport diff service while I was at it by replacing the fluids after replacing the sensors.

Followed this post to clear and prime the lines: https://forums.ross-tech.com/index.php?threads/6426/Image1624581558.902410.jpg

If anyone needs the sensors (brown/black) let me know. Apparently mine we’re good still and the issues were the solenoids. Or if you need the thin wall socket to replace the sensors.

Sent from my iPhone using Audizine

hey I just got my first Sport diff errors this last week. Shoot me a pm on the parts you have. Thanks

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[ValidatedS4]

Sent you a PM. Haven’t checked AZ in a while.


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[DanteSeven10]

I sent you a pm . Validateds4


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[Jroyalty7]

Digging this up from the grave, battling the same issue right now on my 2013 b8.5 s4… can anyone confirm the sensors fixed theirs? What about the solenoids and their location? Would love to fix this issue.

[hardfive]

Digging this up from the grave, battling the same issue right now on my 2013 b8.5 s4… can anyone confirm the sensors fixed theirs? What about the solenoids and their location? Would love to fix this issue.

Maybe helpful maybe not, but my sport diff errors were caused by low voltage from battery. As they die the cars electrical system gets gremlins when voltages are too low. Never touched the diff or sensors. Swapped my battery and haven't had an error in almost 3 years.

[Jroyalty7]

Maybe helpful maybe not, but my sport diff errors were caused by low voltage from battery. As they die the cars electrical system gets gremlins when voltages are too low. Never touched the diff or sensors. Swapped my battery and haven't had an error in almost 3 years.

Anything is helpful at this point, I appreciate you chiming in. I did however just replace the battery in October of 2024. Had some mechanical issues and car sat for a month and the battery went completely dead. Only thing with that is I wasn’t able to code the new battery with vagcom because I had already installed it and forgot to pull the info off of the new battery and it wouldn’t let me change the last digit of the old battery so I just left it because I didn’t feel like pulling it back out at that moment but it’s been driven daily since then with no issues. Since then I upgraded to an RS5 and have the S4 to my son. He was driving in some heavy rain the other day and got the sport diff fault and I’ve been going down the rabbit hole ever since. VCDS shows the temps reading on the sensors but 0 bars for pressure, unfortunately why I’m here. I may pull the battery out and properly code it though since this just reminded me, but I don’t think that’s going to solve it unfortunately. I’ve since pulled the 3 sensor plugs cleaned them and reinstalled with some dielectric grease and the control module on the back of the battery, cleared DTCs, but fault remains :/

[hardfive]

Anything is helpful at this point, I appreciate you chiming in. I did however just replace the battery in October of 2024. Had some mechanical issues and car sat for a month and the battery went completely dead. Only thing with that is I wasn’t able to code the new battery with vagcom because I had already installed it and forgot to pull the info off of the new battery and it wouldn’t let me change the last digit of the old battery so I just left it because I didn’t feel like pulling it back out at that moment but it’s been driven daily since then with no issues. Since then I upgraded to an RS5 and have the S4 to my son. He was driving in some heavy rain the other day and got the sport diff fault and I’ve been going down the rabbit hole ever since. VCDS shows the temps reading on the sensors but 0 bars for pressure, unfortunately why I’m here. I may pull the battery out and properly code it though since this just reminded me, but I don’t think that’s going to solve it unfortunately. I’ve since pulled the 3 sensor plugs cleaned them and reinstalled with some dielectric grease and the control module on the back of the battery, cleared DTCs, but fault remains :/

Funny thing is I didn't code my battery right away and errors did continue for a month or two. I would clear them with VCDS, and they would eventually come back, usually while cornering, so a bad sensor seemed likely to me.

Coded the battery when I got around to it (always felt like "coding" was just another nickel and dime move by dealers) and the error never came back. The gremlins are born with low voltage but persist in some memory somewhere. I've done a ton of wrenching in my car and gave up trying to rationalize why some things be the way they are with Audi they just are.

Maybe you have a real hardware issue but Id 100% code it before I did anything else

Good luck

[Jroyalty7]

Funny thing is I didn't code my battery right away and errors did continue for a month or two. I would clear them with VCDS, and they would eventually come back, usually while cornering, so a bad sensor seemed likely to me.

Coded the battery when I got around to it (always felt like "coding" was just another nickel and dime move by dealers) and the error never came back. The gremlins are born with low voltage but persist in some memory somewhere. I've done a ton of wrenching in my car and gave up trying to rationalize why some things be the way they are with Audi they just are.

Maybe you have a real hardware issue but Id 100% code it before I did anything else

Good luck

Much appreciated! You’re right that needs to be the first place I start. Probably won’t get to it for a couple days but I will post back here if that resolves it! Truly hope so, you’re also right with Audi sometimes it makes no sense whatsoever lol… Thank you!

[Jroyalty7]

So no joy on recoding the battery. Reprogrammed, cleared codes, diff fault comes right back. Took the negative terminal off the battery for about 20 minutes, cleared codes, still comes right back. To be fair I had to kind of hodge podge the battery coding because the duralast H9 100AH battery I bought did not have a BEM code and that took me down some other nonsense path of trying to figure out how to code that… and to be completely honest I don’t know if it’s completely accurate. Smh… just never ending shenanigans with these cards… does anyone know how to check if the pressure sensor versus the solenoid is bad? How to test the pump? I’d like to go down the appropriate diagnostic path and not just start throwing parts at this, but I’m not quite sure where to begin. Any thoughts, recommendations, or pointers are much appreciated.

[ValidatedS4]

So no joy on recoding the battery. Reprogrammed, cleared codes, diff fault comes right back. Took the negative terminal off the battery for about 20 minutes, cleared codes, still comes right back. To be fair I had to kind of hodge podge the battery coding because the duralast H9 100AH battery I bought did not have a BEM code and that took me down some other nonsense path of trying to figure out how to code that… and to be completely honest I don’t know if it’s completely accurate. Smh… just never ending shenanigans with these cards… does anyone know how to check if the pressure sensor versus the solenoid is bad? How to test the pump? I’d like to go down the appropriate diagnostic path and not just start throwing parts at this, but I’m not quite sure where to begin. Any thoughts, recommendations, or pointers are much appreciated.

Hey guys been awhile since I’ve been on Audizine. But this is the speciality tool you need. It is a 27mm socket since one of the sensors is recessed inside the diff. Remember if you go down the sensor replacement only replace one at a time and do the adaptation prior to swap out the other sensors as the sport diff tolerances are coded in to each sensor.

https://vw.snapon.com/SpecialToolsDe...temid=16810184

Before dealing sensors, I’d start with the solenoids first since the kit is much cheaper than 2 sensors + tool. My solenoids were rusty so assuming that’s why they gave me the sport diff error. I’d check to see how the solenoids look. If they look rusty they are probably bad from weather exposure.

Follow the thread here on how they fix it with the solenoid kit.

https://www.audizine.com/forum/showt...id-Replacement


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[Jroyalty7]

Hey guys been awhile since I’ve been on Audizine. But this is the speciality tool you need. It is a 27mm socket since one of the sensors is recessed inside the diff. Remember if you go down the sensor replacement only replace one at a time and do the adaptation prior to swap out the other sensors as the sport diff tolerances are coded in to each sensor.

https://vw.snapon.com/SpecialToolsDe...temid=16810184

Before dealing sensors, I’d start with the solenoids first since the kit is much cheaper than 2 sensors + tool. My solenoids were rusty so assuming that’s why they gave me the sport diff error. I’d check to see how the solenoids look. If they look rusty they are probably bad from weather exposure.

Follow the thread here on how they fix it with the solenoid kit.

https://www.audizine.com/forum/showt...id-Replacement!

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Very much appreciated!! That tool will be a life saver as I was reading through one of the threads where they had to grind down their 27mm because it was too thick, I hate being in the middle of a job like this and finding out I can’t finish because I’m missing something so trivial smh. And yeah $60 is pretty ridiculous Audi markup for a thin walled deep 27mm socket smh. I’ll post back here when I get to dig into this job one of these weekends. Thank you again, this thread and you putting down your experience is a life saver.