Description:

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.

Reaction:

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

Recommendations:

• 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.

Note:

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