KitchenAid Dishwasher F6E3 Error Code — What It Means
The F6E3 error code on a KitchenAid dishwasher means the control has detected excessive suds or foam inside the tub. This foam condition interferes with normal filling and operation, triggering the fault. The dishwasher’s sensing system is designed to recognize abnormal suds levels and halt the cycle to prevent damage.
In nearly all cases, F6E3 is caused by detergent issues rather than a hardware failure. Using the wrong type of detergent (laundry soap, hand soap, or hand-wash dish soap), adding too much dishwasher detergent, or leaving the rinse aid dispenser cap off after refilling are the primary triggers. Once foam builds up, the dishwasher cannot operate correctly until the suds are cleared from the system.
Common Causes
- Wrong detergent type Using laundry detergent, hand soap, or hand-wash dish soap instead of automatic dishwasher detergent creates excessive foam that triggers the code.
- Too much dishwasher detergent Overloading the detergent cup or using more than the recommended amount generates suds beyond what the dishwasher can handle.
- Rinse aid dispenser cap left off Forgetting to replace the rinse aid cap after refilling allows rinse aid to leak continuously into the tub, causing foam buildup.
- Residual suds from previous cycle Foam from a prior incorrect detergent load can persist in the system and re-trigger the error even after switching to correct detergent.
Step-by-Step Fix
- Verify suds in the tub by opening the dishwasher door and inspecting for foam or bubbles inside the tub.
- Remove as much foam as possible using a plastic cup or wet-dry vacuum to scoop out visible suds from the tub.
- Take out all dishes from the dishwasher so you can run foam-clearing cycles without any load.
- Add 2 to 3 tablespoons of vegetable cooking oil directly into the bottom of the empty tub to suppress and break down the remaining suds.
- Run a full cycle with no detergent or dishes to flush the oil and foam mixture through the system and drain it out.
- Run a second full cycle with the correct dishwasher detergent in the cups but no dishes, to clear any residual suds and verify that normal operation has resumed.
- Check the rinse aid dispenser cap to confirm it is properly seated and not missing, and verify you are using only automatic dishwasher detergent going forward.
Parts Often Needed
| Part | Notes |
|---|---|
| Rinse aid dispenser cap | Amazon | Replace if missing or damaged after refilling rinse aid. |
| Automatic dishwasher detergent | Amazon | Use only detergent labeled for automatic dishwashers, not hand-wash or laundry soap. |
When to Call a Pro
If the F6E3 code persists after completing the foam-clearing cycles, rechecking your detergent type and quantity, and confirming the rinse aid cap is in place, the dishwasher’s sensing system may be detecting a fault at the control or sensor level. At that point, further diagnostics require service tools and knowledge of the control board and pressure or water-level sensors. A qualified appliance technician can test the sensing circuits and determine whether a control board or sensor component has failed.