Fendt 04.1.42 – Transmission Control System: B014 - Hall sensor for accumulator shaft speed

The fault indicates a 'Sensor faulty' or 'Speed signal faulty'. When this code is triggered, the tractor's transmission control system loses the speed signal from the hydrostatic accumulator shaft, typically allowing continuation in emergency mode.

• 309 Vario COM III
• 310 Vario COM III
• 311 Vario COM III
• 312 Vario COM III
• 922 Vario COM III
• 924 Vario COM III
• 927 Vario COM III
• 930 Vario COM III
• 933 Vario COM III
• 936 Vario COM III
• 207
• 208
• 309
• 310
• 311
• 312
• 313
• 409
• 410
• 411
• 412
• 413
• 414
• 415
• 711
• 712
• 714
• 716
• 718
• 720
• 722
• 724
• 815
• 817
• 818
• 822
• 824
• 826
• 828
• 916
• 920
• 922
• 924
• 926
• 927
• 930
• 933
• 936
• 939

1. 1

   Check the 8.5 V power supply to the B014 sensor from the A013 module and inspect the corresponding fuse (Fuse 07 or Fuse 1).

2. 2

   Inspect connector X163 and the wiring harness leading back to the transmission control unit for breaks, corrosion, or shorts.

3. 3

   Access the transmission diagnostics menu via the Variotronic terminal (A008) and compare the 'REAL' transmission adjustment value to the 'IDEAL' and 'VE' values. A missing or erratic 'REAL' value indicates a likely sensor fault.

1. 1

   Preparation

   Park the tractor on a level surface, apply the handbrake, and turn the ignition OFF.

2. 2

   Locate the Sensor

   Locate the B014 hydrostatic collecting shaft sensor on the Vario transmission housing.

3. 3

   Disconnect

   Unplug the X163 electrical connector from the B014 sensor.

4. 4

   Removal

   Unbolt and carefully remove the faulty B014 Hall sensor from the transmission block.

5. 5

   Installation

   Install the new OEM speed sensor (B014) into the transmission housing.

6. 6

   Reconnect

   Reconnect the X163 wiring harness connector.

7. 7

   Calibration/Testing

   Turn the ignition ON. Clear the stored 04.1.42 fault code from the tractor's memory using the Variotronic terminal. Test drive the tractor and monitor the 'REAL' transmission adjustment values in the diagnostics menu to ensure the new sensor is broadcasting the correct speed signal.