Fendt 6.1.AA – A004 Control Console: "Active" key (only NA version) — Communication fault

This code indicates a CAN-bus communication failure specifically related to the "Active" key signal on the control console. Because the system cannot communicate with this key, the tractor disables the rear PTO for safety, rendering the PTO non-operational.

• 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
• 411 Vario COM III
• 412 Vario COM III
• 413 Vario COM III
• 414 Vario COM III
• 415 Vario COM III
• 712 Vario COM III
• 714 Vario COM III
• 716 Vario COM III
• 718 Vario COM III
• 818 Vario COM III
• 820 Vario COM III
• Fendt 300 Vario (COM III)
• Fendt Farmer 400 / 400 Vario (COM III)
• Fendt Favorit 700 / 700 Vario (COM III)
• Fendt 800 Vario (COM III)
• Fendt Favorit 900 / 900 Vario (COM III)

1. 1

   Check the voltage supply on printed circuit board/fuse board A013, specifically inspecting fuses F040 and F041 for a blown condition.

2. 2

   Use the FENDIAS diagnostic tool or the tractor's terminal to check for fault code 0.0.13, which indicates a total bus failure for the A004 Control Console.

3. 3

   Inspect the CAN-bus wiring harness and connectors between the A004 control console (right mudguard) and the single e-box for corrosion, pin damage, or chafing.

4. 4

   Test the 'Active' key to ensure it is not mechanically stuck or physically damaged.

1. 1

   Power Down

   Turn off the tractor and disconnect the battery before servicing electrical components.

2. 2

   Fuse Replacement

   If fuses F040 or F041 on board A013 are blown, replace them and retest the system. If they blow again immediately, there is a short in the A004 wiring harness.

3. 3

   Harness Repair

   If wiring damage is found between the e-box and the A004 console, repair the broken CAN lines using twisted-pair CAN-bus repair standards.

4. 4

   Console Removal

   If the power supply and wiring are intact, the A004 control console has an internal ECU/circuit board failure. Remove the right mudguard panel in the cab to access and unbolt the A004 control console.

5. 5

   Repair or Replace

   The A004 unit must be replaced with a new OEM unit or sent to a specialized agricultural electronics repair service (such as Micronetwork, which specifically services Fendt A004 consoles).

6. 6

   Reprogramming

   Depending on the tractor's exact configuration and whether a new e-box or console is installed, an EOL (End of Line) reprogramming may be necessary to restore full PTO functionality.