John Deere 2035.09 – Multiple (SFA, ICU, HV1, PDU, TIQ): Communication System Error

A CAN BUS message from the HCU (Hitch Control Unit) or HCC (Hitch Control Center) is missing or incorrect.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 7630
• 7720
• 7730
• 7820
• 7830
• 7920
• 7930
• 7185J
• 7195J
• 7205J
• 7210J
• 7225J
• 8235R
• 8260R
• 8285R
• 8310R
• 8335R
• 8360R
• 8310RT
• 8335RT
• 8360RT
• 9470RT
• 9520RT
• 9570RT
• 6090MC
• 6100MC
• 6110MC
• 6090RC
• 6100RC
• 6110RC

1. 1

   Restart the vehicle to see if the issue is a transient communication glitch

2. 2

   Check the fuse panel for blown fuses related to the Hitch Control Unit and the reporting module (e.g., Fuse F30)

3. 3

   Check for accompanying voltage codes (such as HV1 000158.04) that would confirm the hitch module is not receiving enough power

4. 4

   Visually inspect the CAN BUS wiring harness and connectors at the Hitch Control Unit for corrosion, backed-out pins, or physical damage

1. 1

   Acknowledge and Clear

   Press the select switch on the CommandCenter to acknowledge the code. Shut down the tractor and restart it to see if the active code returns.

2. 2

   Fuse Replacement

   If the code returns, locate the fuse panel and test the fuses associated with the HCU/HCC and the reporting module (such as F30). Replace any blown fuses and re-test.

3. 3

   Harness Repair

   If fuses are good, use a multimeter to verify power, ground, and CAN High/CAN Low continuity at the Hitch Control Unit connector. Repair any broken wires or clean corroded terminals.

4. 4

   Module Replacement

   If the HCU has verified power, ground, and intact CAN lines but is still not communicating with the SFA/ICU, the Hitch Control Unit itself has likely failed internally and must be replaced.

5. 5

   Dealer Calibration

   If the HCU is replaced, OEM documentation notes that you may need to have a John Deere dealer calibrate the new module and clear historical codes.