KitchenAid Dishwasher Error Code F6E4

F6E4 means the dishwasher has detected an overfill condition through the float switch circuit. The control reads the float switch as open, which is the signal it receives when water has risen to an unsafe level. The fault can be caused by a physically stuck float, an out-of-level unit, a leaking drain check valve, a mechanically stuck fill valve, or a shorted triac on the control board.

It is not recommended to operate the dishwasher while F6E4 is active. The code indicates the machine may be overfilling or at risk of overfilling, which can lead to water leaking onto your floor or into surrounding cabinetry. Resolve the cause of the fault before running another cycle.

Repair costs depend on which component is at fault. If the fix is simply clearing debris from under the float or adjusting the leveling legs, there is no parts cost. A replacement drain check valve or fill valve typically runs in the range of $15 to $60 in parts. A new control board is the most expensive scenario, generally ranging from $100 to $300 or more for the part alone, plus labor if you use a technician.

Start by removing the lower rack and checking the float assembly at the bottom of the tub for any debris or items holding it in the raised position. Press the float down and confirm it springs back up with a click. Next, verify the dishwasher is level using a bubble level and adjust the legs if needed. If the float and leveling check out, inspect the drain hose check valve for damage and test the fill valve for proper operation before suspecting a control board fault.

A reset may temporarily clear the code, but it will return if the underlying cause has not been corrected. The float switch circuit is continuously monitored, so if the float is still stuck, the check valve is still leaking, or the fill valve is still running unchecked, the F6E4 fault will reappear as soon as the next fill cycle begins.