The Dishwasher Micro Switch is an OEM part for LG dishwashers. It plays a crucial role in detecting the door's position, ensuring the dishwasher only operates when the door is securely closed. This switch helps maintain safety and proper functioning during the wash cycle. Causes of a bad micro switch can include wear and tear from regular use, electrical malfunctions, or physical damage. A compromised micro switch can prevent the dishwasher from starting or stopping correctly. Symptoms of a bad dishwasher micro switch include: The dishwasher not starting or stopping unexpectedly Error codes related to door issues The door not locking securely during operation Unresponsive control panel or buttons This OEM LG part is also compatible with Sears/Kenmore models.Part Number 3W40025L (AP5650845) replaces 2313790, PS5574491.