FixByModel
F8E4

KitchenAid F8E4: Overfill or water in base detected

F8E4 means the float or overfill sensor detected water in the base or drip tray. It is commonly triggered by excess suds, a small leak, or a float wiring issue rather than a true overflow.

DIY fix

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

Most likely causes

  1. Excess suds from using the wrong detergent or dish soap
  2. Water leaked into the base pan or drip tray
  3. Float switch or its wiring disconnected, often after a new install
  4. Loose or misrouted water-supply connection
  5. Overfilling from a faulty fill valve
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

1Silence the alarmPress Cancel once to stop the tone while keeping the door closed.
2Check for sudsConfirm you are using dishwasher detergent, not hand or dish soap, which foams and can trip the sensor.
3Empty the drip trayCarefully remove and empty the drip tray, noting that the float switch wire stays attached.
4Inspect connectionsOn a new install, verify the water-supply washers are seated and the float connector is locked in place.
5Clear the codePress Cancel again to reset; if F8E4 returns, schedule service to find the water source.

Still showing F8E4?

If you’ve worked through every step and F8E4 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 F8E4 mean?

Overfill or water in base detected. F8E4 means the float or overfill sensor detected water in the base or drip tray. It is commonly triggered by excess suds, a small leak, or a float wiring issue rather than a true overflow.

What causes KitchenAid F8E4?

The most likely cause is excess suds from using the wrong detergent or dish soap. Other causes include Water leaked into the base pan or drip tray; Float switch or its wiring disconnected, often after a new install; Loose or misrouted water-supply connection; Overfilling from a faulty fill valve.

Can I fix KitchenAid F8E4 myself?

Usually yes. Start by working through the steps above, beginning with: press cancel once to stop the tone while keeping the door closed.