Fendt 0A.1.D8 – Instrument panel / ABS / operator's seat: Warning, hydraulic oil tank

The hydraulic oil level has dropped to a low level, triggering a warning display.

• 922 Vario COM III
• 924 Vario COM III
• 927 Vario COM III
• 930 Vario COM III
• 933 Vario COM III
• 936 Vario COM III
• Fendt 300 Vario (COM III)
• Fendt 400 Vario (COM III)
• Fendt 700 Vario (COM III, SCR, S4)
• Fendt 800 Vario (COM III, S4)
• Fendt 900 Vario (COM III, SCR, S4)

1. 1

   Manually check the hydraulic oil level using the machine's sight glass or dipstick to confirm if fluid is actually low.

2. 2

   Inspect the tractor's hydraulic lines, remote valves, and cylinders for external leaks that would cause fluid loss.

3. 3

   Inspect the wiring harness and connector at the B084 hydraulic oil level sensor for poor connections or damage.

1. 1

   Top Up Hydraulic Fluid

   Fill the hydraulic oil tank to the correct specification. Fendt documentation recommends using Fendt Extra Trans 10W-40 or STOU oil (viscosity SAE 10W-40 or 15W-40).

2. 2

   Clear the Code

   Cycle the tractor's ignition. If the fluid level is restored, the warning display should clear.

3. 3

   Test the Sensor

   If the hydraulic tank is completely full but the 0A.1.D8 warning persists, the B084 sensor itself is likely stuck or failing.

4. 4

   Replace the Sensor

   Drain the hydraulic fluid below the sensor port level (or use a vacuum system to hold the fluid), unthread the faulty B084 sensor, install the new sensor, and top off the fluid.