Fendt 07.1.05 – Enhanced Control ECU (A002): B002 - Sensor, front PTO speed

This fault code indicates a signal fault or failure of the front PTO Hall-effect speed sensor (B002). The underlying condition is typically a faulty sensor, a break in the signal circuit, or a 12V supply fault.

• 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
• 300 Vario
• 400 Vario
• 500 Vario
• 700 Vario
• 800 Vario
• 900 Vario
• Favorit 700 series
• Favorit 900 series
• Farmer 400 series

1. 1

   Check the 12V power supply to the sensor by inspecting fuse A013 (may be fuse 14, 22, or 36 depending on the model).

2. 2

   Inspect the wiring harness and separation point X151 connector between the ECU and the B002 sensor for chafing, corrosion, or loose pins.

3. 3

   Test the sensor signal output with a multimeter: it should read 0 VDC when stationary (or up to 6.3 VDC depending on ratchet wheel position) and approximately 2.1 VDC when the front PTO is rotating.

1. 1

   Locate the Sensor

   The B002 sensor is located at the front of the front PTO transmission gearbox.

2. 2

   Access the Sensor

   Remove the protective cup/funnel covering the front PTO stub shaft to gain access to the sensor.

3. 3

   Disconnect

   Unplug the X151 electrical connector from the B002 sensor.

4. 4

   Replace

   Unbolt and remove the faulty Hall-effect speed sensor. Install the new sensor and tighten it to the manufacturer's specified torque.

5. 5

   Reassemble

   Reconnect the X151 connector and reinstall the protective cup/funnel.

6. 6

   Clear and Test

   Clear the fault codes from the Enhanced Control ECU. Test the front PTO to ensure it engages normally without needing the 5-second emergency override.