Massey Ferguson D155 – Instrument Panel (X55): Incorrect tractor code selected

The instrument panel's software is currently programmed with the wrong parameter code (often referred to as the 'parameter AA code') for the specific tractor model it is installed in.

• MF 8650
• MF 8680
• Interim Tier 4 (2012-2015)
• 7615
• 5613
• MF 8480
• MF 8450
• 7616
• 7618
• 5608
• 7619
• 7626
• MF 8660
• 7624
• MF 8690
• 7614
• MF 8470
• 5610
• 7620
• MF 8600
• MF 8460
• MF 8670
• 5612
• 7622
• 5611
• 5609
• MF 5400 Series
• MF 6400 Series
• MF 7600 Series
• MF 8400 Series
• MF 8600 Series
• 8670
• 8690
• Dyna-4
• Dyna-6
• Dyna-VT

1. 1

   Verify the exact model and configuration of the tractor you are working on.

2. 2

   Use the tractor's diagnostic menu or Massey Ferguson's WINTEST diagnostic software to read the current 'parameter AA code' (tractor code) programmed into the instrument panel.

3. 3

   Compare the currently programmed code against the correct factory code for your specific tractor model and transmission type.

1. 1

   Connect the Massey Ferguson diagnostic tool (WINTEST) to the tractor's diagnostic port, or access the instrument panel's onboard diagnostic/setup menu if your model permits manual entry.

2. 2

   Navigate to the Instrument Panel (X55) configuration settings.

3. 3

   Locate the 'parameter AA code' or 'Tractor Code' setting.

4. 4

   Enter the correct tractor code for your specific machine.

5. 5

   Save the configuration and cycle the tractor's key (turn the ignition off, wait 30 seconds, and turn it back on).

6. 6

   Clear the D155 fault code and verify that it does not return.

   If the instrument panel repeatedly loses its configuration after the battery is disconnected or the tractor is turned off, the internal memory of the instrument panel has failed, and the cluster itself will need to be replaced.