Oversudsing is a common cause of leaking in a dishwasher, especially if too much or the wrong type of detergent is used. Using detergent other than automatic dishwasher detergent or too much of the right detergent can cause excess suds to build up during the wash cycle, which cannot drain and cause leaks. To correct this problem, leave the dishwasher open to dissolve some of the soap then add 1 gallon of cold water to the bottom of the tub. Shut the door and push “Start” twice to initiate a drain cycle. Repeat, as necessary, until the sudsy water has drained out.
Sometimes water will leak from the bottom of the dishwasher if there are system-wide drainage issues that affect the dishwasher. This is often resolved by running the garbage disposal in the kitchen sink and cleaning out the air gap. Take off the air gap cover, clean out any soil buildup then replace the cap over the air gap.
Check your household water heater to see if the water temperature is set above 160 degrees Fahrenheit. If the temperature is above 160 degrees Fahrenheit, the dishwasher may leak water when the hot water enters the cold dishwasher tub. Set the water temperature between 120 and 160 degrees Fahrenheit for the best results.
Sometimes water will leak from the bottom of the tub if the dishwasher is not level. Look at the leveling legs in the front of your KitchenAid dishwasher and use a wrench to adjust them until the dishwasher is level. If you cannot access the legs or the dishwasher has been built into the cabinets, contact KitchenAid or an authorized service technician for assistance.