How to troubleshoot KitchenAid dishwasher involves systematic checks for common issues like not starting, not draining, not cleaning well, leaking, and error codes, with steps to identify cause before calling technician. First check power, ensure dishwasher plugged in, breaker not tripped, door fully closed and latched as dishwasher will not start if door not latched. If dishwasher not starting, check Child Lock disabled, press Start and close door within 3 seconds. If not draining and water left in bottom, clean filter at bottom, check drain hose for kinks and garbage disposal knockout plug removed if new install, and clean drain pump. If not cleaning well, check spray arms for clogs, clean filter, use correct detergent and rinse aid, and ensure water temperature at least 120F. If leaking, check door gasket for debris and racks not blocking door. If showing error codes like F8 E4 for drain, F6 E4 for float switch, check manual. To reset, turn off breaker for 5 minutes then on. Run diagnostic mode by pressing Heated Dry, Normal, Heated Dry, Normal within 5 seconds. So troubleshoot by checking power, door, filter, and error codes.
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