What is the most common part to fail on a dishwasher?

The most common part to fail on a dishwasher is the drain pump or drain motor, followed by water inlet valve and door latch. The drain pump is responsible for pumping dirty water out of dishwasher at end of cycle, and it fails frequently due to food debris, broken glass, and hard water scale clogging impeller, causing dishwasher to not drain, leave standing water, and display error codes like F9E1 or OE. Drain pumps typically last 5 to 8 years and cost 30 to 80 dollars for part plus 100 to 180 dollars labor. Second most common is water inlet valve, which controls water entering dishwasher, its screen clogs with sediment or solenoid fails after 4 to 7 years, causing no fill or slow fill and dishes not cleaning. Third is door latch or door switch, which must engage for dishwasher to start, latch breaks from repeated use after 3 to 6 years, costing 20 to 50 dollars. Fourth is heating element, which heats water and dries dishes, can burn out after 5 to 8 years. Fifth is control board from power surges. Sixth is spray arm that gets clogged with food. Regular cleaning of filter weekly, scraping dishes before loading, using correct detergent dose, and running monthly cleaning cycle with Affresh prevents drain pump and inlet valve failures that are most common.