The manual lists "SPN" and "FMI" codes. It explains what triggered the fault, such as:
Indicated by grinding noises or skipped gears. Communication Faults: Issues with the CAN-bus wiring. 2. Maintenance Schedules zf traxon service manual portable
To verify the vehicle's pneumatic supply (usually 8.5 to 12 bar). Summary of Safety Precautions The manual lists "SPN" and "FMI" codes