What stops the CR Touch and BLTouch from homing?

1. Faulty Wiring: Loose or damaged wiring may cause the sensor to malfunction and fail to home. 2. Inaccurate Sensor Placement: Proper placement of the sensor is also crucial for it to measure the bed's surface accurately, and failure to do so may result in homing issues. 3. Sensor Malfunction: The sensors themselves may malfunction due to damage or wear and tear. 4. Issues with the Bed Surface: If the bed surface is not level or clean, it may be problematic for the sensor to obtain an accurate reading, leading to homing errors.