FixByModel
F6E4

KitchenAid F6E4: Overfill float switch tripped

F6E4 points to the overfill/float switch being actuated, frequently because the dishwasher is not sitting level. A temporary control glitch can also trigger it.

DIY fix

By the FixByModel editorial team · Verified 2026-09 · Researched against manufacturer support & repair references (below)

Most likely causes

  1. Dishwasher not level, actuating the float switch
  2. Temporary control-board glitch
  3. Stuck or faulty overfill float switch
Where water collects
1Door gasket
2Hoses & sump
3Base tray
4Float switch

Schematic illustration of a typical dishwasher — not your exact model.

Before you start — unplug the appliance and turn off the water supply. You'll be working near water and electrical parts, and drained water can be hot. If a step involves the pump, wiring, or opening the cabinet and you're unsure, stop and call a qualified technician.

Step-by-step fix

1Reset powerUnplug or switch off the breaker for 30 seconds, then restore power.
2Check the levelPlace a level on the bottom of the tub and adjust the leveling legs until it sits flat front-to-back and side-to-side.
3Retest a cycleRun the dishwasher again to confirm the code has cleared.
4Call for serviceIf F6E4 persists, the float switch or control board may need professional diagnosis.

Still showing F6E4?

If you’ve worked through every step and F6E4 keeps returning, an internal part likely needs testing and replacement. That’s a job for a qualified appliance technician, who can measure the suspect part against the service-manual spec before replacing it.

Which models this applies to

KitchenAid dishwashers. KitchenAid dishwashers on the Whirlpool F#E# control platform (2010s-present)

FAQ

What does KitchenAid F6E4 mean?

Overfill float switch tripped. F6E4 points to the overfill/float switch being actuated, frequently because the dishwasher is not sitting level. A temporary control glitch can also trigger it.

What causes KitchenAid F6E4?

The most likely cause is dishwasher not level, actuating the float switch. Other causes include Temporary control-board glitch; Stuck or faulty overfill float switch.

Can I fix KitchenAid F6E4 myself?

Usually yes. Start by working through the steps above, beginning with: unplug or switch off the breaker for 30 seconds, then restore power.