A Whirlpool dishwasher F8 E4 code means water has gotten into the drip tray under the tub and lifted the float switch. Whirlpool files it under leaks underneath or behind the dishwasher. The dishwasher stops the cycle and starts draining.
So turn the water supply off first. What comes next depends on who installed your dishwasher, and Whirlpool gives different steps for each case.
What Whirlpool dishwasher F8 E4 means
The F8 E4 code reports water in the pan, not a failed part. A technician’s field report on Appliantology lays out the sequence: water leaves the tub, spills into the pan, raises the float and trips the switch.
The board then exits the cycle, runs the drain pump nonstop, flashes F8E4 and locks the controls. In that report, it won’t let you use it again until the pan dries and the switch drops.
That’s why a dishwasher with F8E4 can seem like it won’t stop running. The homeowner in that report had already switched the breaker off for exactly that reason.
No display? Whirlpool lists a flashing pattern of 8, a pause, 4, a pause, repeating, and gives it the same F8E4 steps. KitchenAid and Maytag, both Whirlpool brands, carry identical F8E4 pages too.
Who installed it decides your first move
Whirlpool’s F8E4 help page splits the fix in two: one set of checks if you installed the dishwasher yourself, and a shorter set if a professional did.
For a professional install, Whirlpool says the drain sequence will begin and the dishwasher won’t run. Its steps are short:
- Turn off the water supply to the dishwasher.
- Press Cancel once to silence the alarm.
- Don’t turn off the power, and keep the door closed.
Then Whirlpool points you to service. If your dishwasher’s still new, a JustAnswer technician told one owner the manufacturer would cover the visit in the first year.
I’d follow that path even if you’re handy. If an installer’s connection is leaking, that’s theirs to fix.
Self-installed: check the supply, the float and the tray
If you hooked the dishwasher up yourself, Whirlpool’s list starts with your connections. I always shut the valve under the sink before pulling the toe kick, so nothing’s still feeding the leak while I look.
The water supply fitting
Check every connection point. Whirlpool wants the rubber washer seated properly in each fitting. Its install steps for the 3/4-inch (19 mm) fitting on the 90-degree elbow are specific:
- Slide it up to the valve and hand-tighten it, so it can’t cross-thread.
- Check it with pliers. Another 1/4 to 1/2 turn may be needed to seal the gasket.
- Route the fill hose out the rear left side of the dishwasher.
Snug isn’t always sealed. One r/Appliances owner could see a fitting dripping even though it was already tight by hand.
If that’s what you’re looking at, the replies there are your next step: shut your water off, unscrew the fitting and put in a new rubber washer. That owner ended up replacing the whole supply line, fitting and all, and the leak stopped.
The float switch connector
Next, the float switch. Whirlpool has you line its connector up with the housing and push until the locking tab shows over the back of the connector, and while you’re down there, make sure the power cord isn’t touching the motor or the bottom of the tub.
Empty the drip tray
If there’s water in the tray, it has to come out. Press the snap on each side of the plastic tray toward the center, then pull the tray toward you.
Go slowly, because Whirlpool warns that the float switch wire is still attached at this point and pulling too far or too hard can damage it.
Once the tray’s out, I’d note where the water was sitting before you dry anything, because that’s your first clue to where it came in.
Suds from dish soap
Whirlpool lists suds as a separate cause. Dishwasher detergent doesn’t make suds, but dish soap does, and the foam can push water out of the tub. Turn the dishwasher off, let the suds die down, and use only automatic dishwasher detergent.
A JustAnswer thread shows how fast this happens. A two-month-old WDT750SAK threw F8 and E4 after a helper added dish soap and the tub filled with bubbles. The technician’s answer was to pull the pan under the dishwasher, drain it and put it back.
F8 E4 with no leak you can see
Sometimes the pan is wet and nothing is dripping.
The same Appliantology report covers this. The technician found no leak at the water valve and none under the sump. With the outer door panel off, the real cause showed up: heavy buildup on the door gasket corners.
Some water normally gets past those corners and runs back under the door gasket. With the buildup in the way, it collected at the corners and dripped into the overflow funnel that feeds the pan. A toothbrush and hot water fixed it.
Owners keep finding the same thing. A r/Appliances poster had emptied the tray and watched it fill again, so they ran a cycle with the cover off and traced the water to the gasket:
“Running a damp paper towel around/behind that gasket removed a ton of gunk and food debris that had accumulated.”
– r/Appliances, July 2025
A later reply on that thread found a small piece of ham in the seal. So if your tray keeps refilling, wipe around and behind your door gasket before you do anything else.
Is your dishwasher brand new?
On a three-week-old WDPA70SAMZ in r/appliancerepair, water was spitting from a black hose into the tray. The owner leveled the dishwasher, about a quarter turn up at the front, cleaned the filter screens, and the overflow stopped in testing.
If you’re still under warranty, you can also leave it alone and call it in.
None of that is a part. Before you buy one, run a cycle with your toe kick off and watch where the water shows up.
Stop and call a pro if water is on your floor, not just in the tray, the leak is at a supply line you didn’t install, or the code returns after every fix above. A leaking supply connection keeps feeding water as long as the valve is open.
Whirlpool dishwasher F8 E4 reset
Whirlpool’s reset is two presses: Cancel once to silence the alarm tone, then Cancel again to clear the code. In the Appliantology report, the dishwasher wouldn’t run again until the pan had dried, so empty and dry the tray first.
If F8E4 comes back on a dry pan with tight connections and no suds, or you can’t find where the water’s coming from, it’s time to schedule service. For the rest of the codes, see Whirlpool dishwasher error codes. KitchenAid owners can use KitchenAid dishwasher error codes.
F8 E4 tells you water reached the pan. Clearing it is the easy part. Keeping it clear means finding where your water came from.
