Massey Ferguson 0.0.40 – Dash: CAN BUS Message Issue (Dash)

Communication failure on the Controller Area Network (CAN) bus system, specifically involving messages sent to or from the dashboard instrument cluster. The system is either receiving corrupted data, missing expected signals, or experiencing a physical interruption in the CAN network wiring connected to the dash.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 5709SL
• T4 Series (2017-2023)

1. 1

   Verify the battery is fully charged and the alternator is outputting the correct voltage, as low voltage can cause modules to drop off the CAN bus

2. 2

   Look for companion codes such as 00.0.71 to help isolate if the break is between the Engine ECU and the Dash

3. 3

   Inspect the wiring harness leading to the dashboard for rub points, chafing, or pinched wires, particularly where the harness routes through the firewall/cab structure

4. 4

   Check the main connectors at the back of the instrument cluster and the Engine ECU for backed-out pins, corrosion, or moisture ingress

5. 5

   Perform a CAN Bus Resistance Test across the CAN High and CAN Low pins (healthy is ~60 ohms, 120 ohms indicates an open circuit, 0 ohms indicates a short)

1. 1

   Disconnect Power

   Turn off the ignition and disconnect the negative battery cable to prevent electrical spikes during repair.

2. 2

   Access the Dashboard

   Remove the steering column shrouds and dashboard trim panels to access the rear of the instrument cluster.

3. 3

   Clean and Reseat Connectors

   Disconnect the main wiring harness from the dash. Apply a high-quality electrical contact cleaner to both the harness plug and the dash receptacle. Carefully reseat the connector, ensuring the locking tab clicks into place.

4. 4

   Repair Wiring

   If the resistance test or visual inspection revealed a broken CAN wire, splice and solder the break, then seal it with heat-shrink tubing. Do not use crimp connectors on CAN bus lines, as they can introduce resistance and corrupt data packets.

5. 5

   Replace the Dash Module

   If the wiring, grounds, and voltages test perfectly but the dash still fails to communicate on the CAN bus, the internal CAN transceiver in the instrument cluster has likely failed. Replace the instrument panel with a new OEM unit.

6. 6

   Clear Codes and Test

   Reconnect the battery. Use a compatible diagnostic scan tool (such as Jaltest or AGCO EDT) to clear the 0.0.40 fault code. Start the tractor and verify that the dashboard gauges function correctly and the code does not return.