4.1.EB

Fendt 4.1.EB – Transmission Control Module: Speed range operation — No calibration or drifted values

Issue description

The B016 sensor monitors the travel speed range detection (range control travel). This code triggers when the sensor's values drift outside of expected tolerances or when the range-change system loses its calibration. The tractor will default to auxiliary operation (emergency mode), switching between operating ranges will not be available, and the transmission will remain engaged in the actual current range. The Tractor Management System (TMS) may also be switched off.

Applies to these machines

  • 409 Vario
  • 410 Vario
  • 411 Vario
  • 412 Vario
  • 711 Vario
  • 712 Vario
  • 714 Vario
  • 715 Vario
  • 716 Vario
  • 717 Vario
  • 718 Vario
  • 916 Vario
  • 920 Vario
  • 924 Vario
  • 926 Vario
  • 930 Vario
  • Fendt Farmer 400 Vario (409, 410, 411, 412)
  • Fendt Favorit 700 / 700 Vario (711, 712, 714, 715, 716, 717)
  • Fendt 800 Vario (815, 817, 818)
  • Fendt Favorit 900 / 900 Vario (916, 920, 924, 926, 930, 936)
  • Fendt 300 Vario (COM III)

Check the cause

  1. Check the B016 sensor voltage supply to verify an 8.5 Volt supply is present at the sensor connector

  2. Check the A013 fuse block (specifically Fuse 13, Fuse 08, or Fuse 06 depending on model) for a blown fuse causing a loss of the 8.5V supply

  3. Inspect the Transmission Control wiring harness for shorts, chafing, or signal failures between the B016 sensor and the ECU

Repair steps

  1. Attempt Calibration

    Access the tractor's onboard diagnostic/calibration menu.

  2. Enter Calibration Code

    Enter Calibration Code "4003" (TRANSMISSION) to initiate the speed range operation calibration.

  3. Complete Calibration

    Follow the on-screen prompts to complete the range-change calibration.

  4. Test Operation

    Restart the tractor and attempt to change speed ranges. If the code clears and ranges shift normally, the repair is complete.

  5. Replace Sensor (if calibration fails)

    If the calibration fails to complete, or if the sensor values have drifted beyond the acceptable threshold, replace the B016 sensor. After installing the new sensor, repeat Calibration Code "4003".

Parts you might need

(1)
  • Travel speed range detection sensor (B016)

    Also referred to as Position sensor operating range or Range change potentiometer

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