Massey Ferguson 00.X.44 – Dash Module: CAN BUS Message Issue (Dash)

Indicates a communication failure on the Controller Area Network (CAN bus). Specifically, the system is detecting missing messages, frame errors, or a complete loss of communication between the dashboard module and other control units (such as the Engine Control Module or Transmission Control Unit).

• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• Tier 4 (2015-2021)
• 5710SL
• 5711SL
• 5712SL
• 5713SL

1. 1

   Check system voltage to verify the battery and alternator are outputting correct voltage, as low voltage during cranking or weak charging can trigger false CAN codes

2. 2

   Perform a multimeter CAN voltage test by probing the CAN High and CAN Low pins at the dash connector for shorts to ground (0V), shorts to positive (12V), or open circuits

3. 3

   Inspect the wiring harness leading to the dash for rub points, pinched wires, or damaged insulation

4. 4

   Check error counts via diagnostics (like AGCO EDT or Jaltest) for 'BUS Warn' or 'BUS Off' counts, indicating missing messages due to high CANBUS utilization or physical connection problems

5. 5

   Perform a cold boot by disconnecting the battery for a short period and reconnecting to see if the module resets and clears a temporary software/logic fault

1. 1

   Power down system

   Turn off the tractor and disconnect the negative battery terminal to prevent electrical shorts.

2. 2

   Access the Dash Module

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

3. 3

   Inspect connectors

   Disconnect the main wiring harnesses from the dash module. Inspect the connector pins for corrosion, moisture, or pins that have been pushed back into the plastic housing.

4. 4

   Clean and re-seat connections

   If mild corrosion is found, clean the pins with electrical contact cleaner, apply dielectric grease, and firmly re-seat the connector.

5. 5

   Repair wiring

   If the multimeter test revealed a short or open circuit in the CAN lines, trace the harness back to the fault location. Cut out the damaged section and solder in a new twisted-pair wire, ensuring it is properly shielded and sealed with heat shrink.

6. 6

   Test the system

   Reconnect the battery, turn the key to the ON position, and use a diagnostic scanner to clear the 00.X.44 code.

7. 7

   Repair or replace Dash Module

   If the wiring is 100% intact, the connectors are clean, and the code immediately returns, the CAN transceiver inside the Dash Module has likely failed. The cluster will need to be sent to an agricultural electronics specialist for internal board repair or replaced entirely.