KitchenAid Dishwasher Error Code F3E3 — Drain Check Valve Failure
What this means
The F3E3 error code on KitchenAid dishwashers indicates the drain check valve has failed, which can allow dirty water from the drain or garbage disposal to back up into the dishwasher tub. This can cause foul odors and recontaminate clean dishes. The check valve is a one-way valve in the drain hose that should only allow water to flow out.
Alternate codes: 3-3
Step-by-step fix
3 stepsCheck for backflow
After a cycle, look inside the dishwasher tub. If you see dirty water or food particles that weren't there before, the check valve is likely allowing backflow.
Inspect the drain hose
Pull the dishwasher out enough to access the drain hose. Locate the check valve (usually a rubber flapper in the hose). Check if it's stuck open, torn, or clogged with debris.
The drain hose should have a high loop under the countertop or connect to an air gap to help prevent backflow.
Replace the drain hose
If the check valve is built into the drain hose, replace the entire hose assembly. Install with a proper high loop.
When to call a professional
If you've replaced the hose and the code persists, the issue may be with the control board's drain detection circuit.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Links may earn us a commission at no extra cost to you. We only recommend parts relevant to this repair.