Faulty wheel speed sensor [Replaced]

[Loz]

I received a number of warning lights including:
Stability Control - ABS - TPMS - Front Assist - ACC
Scan showed the following;

Address 03: ABS Brakes (J104)       Labels: 7E0-907-37x-MK100ESC.clb
   Part No SW: 7E0 907 379 Q    HW: 7E0 907 379 N
   Component: ESC           H06 0133 
   Revision: 00000000    Serial number: 42416000000471
   Coding: 617EC09865678480867D037AA686219279F700
   Shop #: WSC 02739 790 50316
   ASAM Dataset: EV_Brake1ESCCONTIVN75XGP2 011001
   ROD: EV_Brake1ESCCONTIVN75XGP2_011.rod
   VCID: 40D8B5B84A054A9B8FF-8014

4 Faults Found:
0087 - Rear Right Wheel Speed Sensor
          C101D 4A [008] - Incorrect Component(s) Installed
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 1
                    Fault Frequency: 5
                    Reset counter: 219
                    Mileage: 45743 km

0089 - Rear Right Wheel Speed Sensor
          C101D 29 [008] - Signal Implausible
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 219
                    Mileage: 45743 km
                    Date: 2022.07.03
                    Time: 08:26:21

0095 - Rear Right Wheel Speed Sensor
          C101D 29 [009] - Signal Implausible
          Confirmed - Tested Since Memory Clear

-------------------------------------------------------------------------------
Address 13: Auto Dist. Reg (J428)       Labels:| 7N0-907-572.clb
   Part No SW: 7N0 907 572 C    HW: 7E0 907 572
   Component: ACC Bosch PQx H03 0210 
   Serial number: 27081604393274
   Coding: 00005000FE0779
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_ACCBEGVW361 001006
   ROD: EV_ACCBEGVW361.rod
   VCID: 3634D36018C1F42B253-8062

10 Faults Found:
1067 - Brake Temperature
          C10DF 00 [008] - -
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 9
                    Reset counter: 219
                    Mileage: 45525 km
                    Date: 2022.06.24
                    Time: 13:28:25

                    Control Module temperature: 23 ∞C
                    Voltage terminal 15: 12.4 V
                    Vehicle speed: 0.00 m/s
                    Acceleration: 0.00 m/s≤

1058 - Databus
          U1123 00 [008] - Received Error Message
          [FAULT_CIS_ECD_NOTAVAILABLE]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 7
                    Reset counter: 219
                    Mileage: 45525 km
                    Date: 2022.06.24
                    Time: 13:28:25

                    Control Module temperature: 23 ∞C
                    Voltage terminal 15: 12.4 V
                    Vehicle speed: 0.00 m/s
                    Acceleration: 0.00 m/s≤

1059 - Databus
          U1123 00 [008] - Received Error Message
          [FAULT_CIS_ESP_FAIL]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 7
                    Reset counter: 219
                    Mileage: 45525 km
                    Date: 2022.06.24
                    Time: 13:28:25

                    Control Module temperature: 23 ∞C
                    Voltage terminal 15: 12.4 V
                    Vehicle speed: 0.00 m/s
                    Acceleration: 0.00 m/s≤

1037 - Databus
          U1123 00 [008] - Received Error Message
          [FAULT_CIS_QDCACC_FAIL]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 3
                    Reset counter: 218
                    Mileage: 45527 km
                    Date: 2022.06.24
                    Time: 13:32:19

                    Control Module temperature: 27 ∞C
                    Voltage terminal 15: 12.8 V
                    Vehicle speed: 21.36 m/s
                    Acceleration: -0.55 m/s≤

1043 - Automatic Distance Control
          B10E7 F0 [009] - Disconnected
          [FAULT_CIS_TSK_IRREV_FAIL]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 5
                    Reset counter: 179
                    Mileage: 45525 km
                    Date: 2022.06.24
                    Time: 13:28:25

                    Control Module temperature: 23 ∞C
                    Voltage terminal 15: 12.4 V
                    Vehicle speed: 0.00 m/s
                    Acceleration: 0.00 m/s≤

1118 - Databus
          U1123 00 [008] - Received Error Message
          [FAULT_CIS_WHEEL_PULSE_FAIL]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 4
                    Reset counter: 218
                    Mileage: 45525 km
                    Date: 2022.06.24
                    Time: 13:28:25

                    Control Module temperature: 23 ∞C
                    Voltage terminal 15: 12.4 V
                    Vehicle speed: 0.00 m/s
                    Acceleration: 0.00 m/s≤

1119 - Databus
          U1123 00 [008] - Received Error Message
          [FAULT_CIS_WHEEL_PULSE_INVALID]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 4
                    Reset counter: 219
                    Mileage: 45525 km
                    Date: 2022.06.24
                    Time: 13:29:45

                    Control Module temperature: 26 ∞C
                    Voltage terminal 15: 12.5 V
                    Vehicle speed: -0.03 m/s
                    Acceleration: -0.11 m/s≤

1081 - Databus
          U1123 00 [008] - Received Error Message
          [FAULT_CIS_WHEEL_RPM_FAIL]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 4
                    Reset counter: 218
                    Mileage: 45525 km
                    Date: 2022.06.24
                    Time: 13:28:25

                    Control Module temperature: 23 ∞C
                    Voltage terminal 15: 12.4 V
                    Vehicle speed: 0.00 m/s
                    Acceleration: 0.00 m/s≤

1082 - Databus
          U1123 00 [008] - Received Error Message
          [FAULT_CIS_WHEEL_RPM_INVALID]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 4
                    Reset counter: 219
                    Mileage: 45525 km
                    Date: 2022.06.24
                    Time: 13:29:45

                    Control Module temperature: 26 ∞C
                    Voltage terminal 15: 12.5 V
                    Vehicle speed: -0.03 m/s
                    Acceleration: -0.11 m/s≤

1042 - Databus
          U1123 00 [008] - Received Error Message
          [FAULT_CIS_WHEEL_RPM_PLAUS_FAIL]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 2
                    Reset counter: 218
                    Mileage: 45550 km
                    Date: 2022.06.24
                    Time: 14:11:04

                    Control Module temperature: 26 ∞C
                    Voltage terminal 15: 13.0 V
                    Vehicle speed: -0.01 m/s
                    Acceleration: -0.01 m/s≤

             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 3
                    Reset counter: 179
                    Mileage: 45701 km
                    Date: 2022.06.26
                    Time: 12:22:07

4199 - Rear Right Wheel Speed Sensor
          C101D 14 [008] - Open or Short to Ground
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 6
                    Reset counter: 218
                    Mileage: 0 km
                    Date: 2022.06.26
                    Time: 17:12:51

The smoking gun here is the right rear wheel speed sensor.
I removed the rear wheel and removed the bolt holding the sensor and tried to remove it but it was stuck fast.

I sourced a replacement from @Pauly and set about the repair.

As I suspected, the old one broke off!


Therefore, I had to remove the caliper, disk and backing plate to get better access to effent the removal.




Next it was in with the dremmel;



Then a bit of heat to soften the plactic;


Then worked it out with grips and a bit of levering with a small screwdriver;



Cleaned up the port and installed the new one;


Refitted everthing in reverse.
The lights cleared as soon as the ignition was next turned on, but I cleared out all the fault codes anyway as the VCDS was connected.

Job done!

 

[mmi]

Interesting one. Wondering if the ACC saw some discrepancy in ABS data earlier. Then ABS decided finally to raise the fault . The mileage/date stamps in ACC are earlier than in the ABS.

 

[rhinoman]

Thanks for sharing, I'm getting a similar fault intermittent on mine the last month, its only happened a couple of times and clears when the ignition goes off and back on so I guess its this unit failing.

 

[Johnod17]

Had the same thing on my t5.1 rear right wheel sensor.scanned with VCDS
Replaced the sensor (was stuck in well) but now ok.

 

[Vogon42]

Thanks Loz. I’ll take a look and remove the bolt, if stuck I think I’ll take it to a local garage!

 

[Vogon42]

Thanks again Loz. I had the same problem, it snapped off. I did manage to release the stuck bit without dismantling the brakes though. Had to reset the codes with Carista afterwards.

 

[Robert]

Interesting one. Wondering if the ACC saw some discrepancy in ABS data earlier. Then ABS decided finally to raise the fault View attachment 166703. The mileage/date stamps in ACC are earlier than in the ABS.

Auto Distance Regulation System(aka ACC) is the most fussy one out of all.
It always complaints first.

 

[ei-aprilia]

For future reference, I've always just heated up a nice fat screw with a blow torch and pushed it into the broken off bit then quenched with cold water . Claw hammer or vice grips to pull it out. Never failed me yet!

 

[Vogon42]

For future reference, I've always just heated up a nice fat screw with a blow torch and pushed it into the broken off bit then quenched with cold water . Claw hammer or vice grips to pull it out. Never failed me yet!

Ei-Aprilia, good tip. I’ll try that next time.

 

[bobbybasic]

Anyone know if the part numbers are marked on these sensors?

I’m not sure what to replace my faulty front right sensor with, but will try and remove it tomorrow and investigate.

also, do the brake parts (calliper, disk etc) definitely need to be removed? I’d rather not.

 

[paddy26]

Anyone know if the part numbers are marked on these sensors?

I’m not sure what to replace my faulty front right sensor with, but will try and remove it tomorrow and investigate.

also, do the brake parts (calliper, disk etc) definitely need to be removed? I’d rather not.

If it's an original sensor then the part number will be on it.
OEM sensor on mine was ATE. I replaced it with a febi.
No need to remove anything. You can probably do it with the wheel still on but easier to remove it for better access.

 

[Paynewright]

I replaced a rear one recently - failed 2 days before we were departing for France.

SWMBO picked one up from Euro Car Parts and I changed it in my lunch hour, well 50 mins (its a 5 min walk from/to work).

Faults all cleared and fine ever since.

One loom plug & 1 bolt, nothing else to remove (on the rear anyway).

There is another thread about the topic on which I posted.

Ian