What F6E3 Means
Dishwasher: F6E3 is published as "Potential Cause: Excessive Suds" and the troubleshooting is to remove the suds and run a clean wash cycle. KitchenAid explains that if foam or suds are detected by the sensing system, the dishwasher may not operate properly or may not fill with water, and it lists where the suds come from: the wrong type of detergent such as laundry detergent, hand soap or dish detergent meant for washing up by hand; forgetting to replace the rinse aid dispenser cap after filling it; and simply using too much dishwasher detergent. This is not a broken part. It is the machine refusing to work in conditions it cannot wash in.
Common Causes of F6E3
- Hand dish soap, laundry detergent or hand soap put into the machine instead of dishwasher detergent
- The rinse aid dispenser cap left off or not properly closed after a refill
- Simply too much dishwasher detergent for the load and the local water
🔧 One Safe Check You Can Try
Open the door and look at the bottom of the tub. If suds are there, KitchenAid's published steps are to scoop out as many as you can with a plastic cup, remove the dishes and add two to three tablespoons of vegetable cooking oil to the bottom of the tub to knock the foam down, run a full cycle with no detergent and no dishes, then follow with a full cycle with detergent in the dispenser cups but still no dishes. Check the rinse aid cap is seated while the door is open, and measure detergent properly from then on.
⚠ Why You Shouldn't Go Further Than That
- Suds push water up and out past the door seal, so a machine run again on top of a full load of foam puts water onto the kitchen floor and under the cabinet run where it soaks into the substrate.
- The sensing system is doing its job here, so disabling or ignoring the complaint and forcing cycles through only spreads detergent residue through the pump and hoses.
- If the foam keeps returning after a proper clear-out with the correct detergent, something in the machine is holding residue, and that is a diagnosis rather than a dosing change.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.