Fendt A.1.17 – Electrical Valves / Spool Valves 1-4 (VALVE 1 / VENDI): Y015 - Spool valve fault, valve 1 — Internal position sensor fault

This code indicates that the internal position pickup sensor inside the #1 electronic hydraulic spool valve (designated as component Y015) has failed or is sending an erratic signal. Because the tractor's computer cannot accurately determine the position of the valve spool, the system triggers a safety override, and the valve automatically defaults/moves into the neutral position.

• 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
• Fendt Favorit 700
• Fendt Favorit 900
• Fendt 300 Vario series
• Fendt 400 Vario series
• Fendt 700 Vario series
• Fendt 800 Vario series
• Fendt 900 Vario series

1. 1

   Inspect the wiring harness leading to the Y015 valve (Connector X326) for chafing, breaks, or corrosion.

2. 2

   Verify the integrity of the CAN bus communication lines at the connector (specifically pins 24 and 26) and the power/ground supply (pin 23).

3. 3

   Ensure the fault is strictly electrical by ruling out hydraulic oil contamination. If the spool is physically jamming, the system typically throws codes A.1.18 or A.1.19.

4. 4

   If the wiring and voltages are correct and A.1.17 remains active, the internal sensor/circuit board has failed, and the entire valve must be replaced.

1. 1

   Locate the Valve

   The Y015 valve is the 1st auxiliary control valve (color-coded yellow for Position 1). It is located on the underside of the central control block (ZSB).

2. 2

   Gain Access

   To access the valve block, unscrew and remove the right-hand step, then pull the right auxiliary tank outwards.

3. 3

   Depressurize

   Ensure the tractor is off and relieve all hydraulic pressure from the system.

4. 4

   Disconnect

   Unplug the electrical connector (X326) from the Y015 valve. Mark and disconnect the hydraulic lines attached to this specific slice of the valve block.

5. 5

   Remove and Replace

   Unbolt the faulty Y015 valve from the manifold stack and install the replacement valve. Reconnect the hydraulic lines and the electrical connector.

6. 6

   Reassemble

   Push the auxiliary tank back into place and reinstall the right step.

7. 7

   Software Calibration

   The new auxiliary control valve will not work out of the box. It must be programmed for "Position 1" using the Fendt EOL (End of Line) program via the FENDIAS diagnostic software so the ECU recognizes its specific address on the CAN bus.