This prompt indicates that the leveling sensor has detected a possible hardware failure that may affect the printer's Z-axis homing and leveling function.
Check the wiring: Ensure that the wiring of the leveling sensor is stable, and check whether there is loosening or falling off.
Replace the sensor: If the problem persists after inspection and cleaning, it may be necessary to replace the leveling sensor to restore normal function.
Check cables to the leveling sensor to ensure that they are securely connected.
Check the sensor to ensure that no foreign matter interferes with its normal operation.
If the problem persists, consider replacing the leveling sensor.
Restart the device, click Z-axis homing, and observe whether the normal operation is restored.