Fendt 09.1.C1 – 0000 - Overall System/Tractor: A054 - Terminal / A103 - Terminal NT01/02

Terminal not fitted or connected. The tractor cannot communicate with the Vario Terminal display, resulting in the tractor's configuration not being able to be changed.

• 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)
• Fendt 800 Vario (COM III & SCR)
• Fendt 820 Vario greentec (COM III)
• Fendt 900 Vario (COM III & SCR)

1. 1

   Verify if the Vario Terminal (A054) is physically installed in the cab (if intentionally removed, this code is expected)

2. 2

   Inspect the multi-pin connectors at the back of the terminal for loose connections, backed-out pins, or corrosion

3. 3

   Inspect the wiring harness running from the terminal to the A050 basic control unit

4. 4

   Test for proper voltage and ground at the terminal connector

5. 5

   Check the serial/CAN communication lines (specifically the TXD send lines) for continuity or shorts to ground

1. 1

   Power Down

   Turn off the tractor and disconnect the battery ground before performing electrical repairs.

2. 2

   Secure Connections

   If the terminal is present but throwing the code, firmly reseat the connectors at the back of the A054 Terminal.

3. 3

   Repair Wiring

   If continuity tests reveal a break in the communication lines between the A054 Terminal and the A050 ECU, repair the damaged section of the wiring harness.

4. 4

   Replace Terminal

   If power, ground, and bus communication lines are intact but the terminal remains unresponsive and the code persists, the A054 Terminal itself has failed internally and must be replaced.

5. 5

   Clear Codes

   Reconnect the battery, power on the tractor, and use the FENDIAS diagnostic software (or the onboard fault code menu) to confirm and delete the stored 09.1.C1 fault code.