The LG 6601ER1006E Washer Water Level Sensor Pressure Switch ensures accurate water level detection for consistent and efficient wash performance. This replacement pressure switch monitors the amount of water in the washer tub by sensing air pressure changes through a connected hose. As the water level rises, the pressure increases, signaling the control board to regulate filling and advance the wash cycle at the appropriate time. Designed for compatibility with select models, it installs in place of a faulty sensor to restore proper operation. Replacing a malfunctioning switch helps prevent overfilling or underfilling, supports efficient water usage, and promotes reliable, balanced washing results.