Faulty wheel speed sensor [Replaced]

[mmi]

ECU info obtained with Carista 8.3.2 for Android:

Thanks.
Indeed - transmission controller is missing in the listing. It definitely should be there.

 

[vwaudidriver]

Thanks.
Indeed - transmission controller is missing in the listing. It definitely should be there.

Hi thanks. What does that mean.

 

[mmi]

Hi thanks. What does that mean.

It means that there is no communication with the transmission on powertrain CANbus. All the other controllers are online and communicating with Carista and with each others. And because the transmission does not communicate with the engine, ABS, etc. is causing problems on the car.
You need to fix the communications problem.

 

[n10n]

Hi thanks. What does that mean.

I would start by checking the connector and wiring at and around the DSG for any signs of corrosion.

What @mmi said there - could be a wiring issue to the transmission. So ABS and other controller units don't see the transmission CAN messages at all. It could also be a totally dead tranny controller, however wiring issue is much more likely.

 

[vwaudidriver]

What @mmi said there - could be a wiring issue to the transmission. So ABS and other controller units don't see the transmission CAN messages at all. It could also be a totally dead tranny controller, however wiring issue is much more likely.

Hi thanks. Would that be something i could look at as it is on the drive. As is car will start. Wont come out of park. I can use manual override on gearstick but even in Drive it only revs up wont move and faults present. Is that transmission wire under the car or in the engine bay

 

[vwaudidriver]

It means that there is no communication with the transmission on powertrain CANbus. All the other controllers are online and communicating with Carista and with each others. And because the transmission does not communicate with the engine, ABS, etc. is causing problems on the car.
You need to fix the communications problem.

Thanks that is excellent feedback makes it alot clearer when you explain it, have Any idea how to fix the comms issue as its parked on my drive is that something i could do
Thanks

 

[mmi]

Is it the 7-speed DSG?

Any idea how to fix the comms issue as its parked on my drive is that something i could do

Well, maybe, it depends.... where and what the fault is - just a corroded connection, wiring break, or failed controller...
I believe the connector is accessible from top. Picture below shows how to release the locking tab to release the connector.
However, the service guide has a serious warning about proper ESD (Electrostatic Discharge) measures when working with open connector.

"​

Risk of damaging gearbox components beyond repair.​

♦ Do not under any circumstances touch the contacts in the​

gearbox connector by hand. Electrostatic discharge can​

destroy the control unit and mechatronic unit.​

– Touch earth connection (without gloves) to discharge static​

electricity.​

"​

​

​

 

[Grim Reaper]

wiring chewed by mice?

 

[vwaudidriver]

Is it the 7-speed DSG?

Well, maybe, it depends.... where and what the fault is - just a corroded connection, wiring break, or failed controller...
I believe the connector is accessible from top. Picture below shows how to release the locking tab to release the connector.
However, the service guide has a serious warning about proper ESD (Electrostatic Discharge) measures when working with open connector.

"​

Risk of damaging gearbox components beyond repair.​

♦ Do not under any circumstances touch the contacts in the​

gearbox connector by hand. Electrostatic discharge can​

destroy the control unit and mechatronic unit.​

– Touch earth connection (without gloves) to discharge static​

electricity.​

"​

View attachment 237687​

​

Thanks. Yes it is a 6 or 7speed dsg auto. i will have look for same and see if there is anything untoward.

 

[vwaudidriver]

Auto electrician diagnosed it as no communication from gearbox to ecu or something like that. Said it was tcm and suggest to replace complete gearbox with secondhand unit replacement. I prefer not to as the used one could have same issue or become an issue in future. I have found a gearbox place that refurbishmes gearboxes he said they will refurbish gearbox tcm n megatronic.

 

[pikeman2210]

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.
View attachment 166693
I sourced a replacement from @Pauly and set about the repair.

As I suspected, the old one broke off!
View attachment 166694

Therefore, I had to remove the caliper, disk and backing plate to get better access to effent the removal.
View attachment 166695
View attachment 166696
View attachment 166697

Next it was in with the dremmel;
View attachment 166698


Then a bit of heat to soften the plactic;
View attachment 166699

Then worked it out with grips and a bit of levering with a small screwdriver;
View attachment 166700
View attachment 166701

Cleaned up the port and installed the new one;
View attachment 166702

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!

Hello, I had this problem recently. Mine are less than 30,000 miles from new. What I did was drill a narrow hole in the broken sensor stub and screw in a large screw and in it through a piece of metal to act as a lever. Popped out no problem.

 

[AndyB8]

The problem with error message U1123 (Passat B8) was caused by corrosion - successfully solved by cleaning the wiring and replacing the outside temperature sensor.

(First my car started showing completely wrong outside temperature, this stopped the cooling and cabin temperature settings working. Then the various error messages started, like loss of tire pressure, adaptive cruise control not working, etc. Diagnostics found error U1123).