PTP 002020.09 – SFA Message Missing

PTP 002020.09 (PTP 2020.09)

Code: 002020.09

Shortcode: 2020.09


This error code is generated when the PTP control unit does not receive CAN messages from the SFA (Suspension Front Axle). This indicates a communication issue between the PTP and the SFA.


The control unit limits functionality, restricting the top forward gear to 15F and the top reverse gear to 4R.


  • Check CAN Bus Connections:
    Inspect the CAN bus wiring and connectors between the PTP and SFA for any signs of damage, loose connections, or corrosion. Repair or replace as necessary.
  • Verify SFA Function:
    Ensure that the SFA is powered on and functioning correctly. Check for any SFA-related error codes.
  • Diagnose SFA Codes:
    If SFA codes are present, diagnose and resolve all SFA codes first, as they may be related to the missing messages.
  • Test Communication:
    Use diagnostic tools to test the CAN bus communication between the PTP and SFA. Ensure that messages are being transmitted and received correctly.
  • Consult Technical Support:
    If the issue persists, consult technical support or the manufacturer for further assistance.


Proper communication between the PTP and SFA is crucial for maintaining full functionality of the vehicle’s transmission system.

Control Units: John Deere

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