Door Obstructions: Clothing, excessive laundry loads, or dirt and debris built up inside the rubber door gasket seal can block the door from fully closing.Faulty Door Lock Interlock Assembly: The microswitch mechanism inside the latch assembly can fail mechanically or short-circuit over time.Loose Interlock Wiring: Vibration during high spin cycles can loosen the multi-pin wire harness plugged into the door lock mechanism.Control Board (PCB) Glitch: Sometimes the main computer gets stuck or confused and fails to read the sensor signals correctly.