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Maytag dishwasher F8 E4 or E4 F8: what it means and how to fix it

Your Maytag dishwasher may beep, flash F8 E4, or show an alternating code that gets read as E4 F8, run the drain pump, then refuse to start a cycle. This page explains what the code means, what you can check from the front of the machine and under the sink, and when a technician needs to test the leak float circuit.

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What the display shows
Straight answer

Maytag dishwasher code E4 F8 is the Whirlpool/Maytag F8E4 overfill or leak float fault. The control is seeing the base tray float switch circuit open, often because water or suds have lifted the float, so the dishwasher starts draining and blocks normal use. A common cause is water in the drip tray from oversudsing, often after dish soap, hand soap residue, or too much detergent got into the machine.

Check these first

Safe to do yourself. Unplug the appliance before you start.

  1. Press Cancel twice

    Press Cancel once to quiet the alarm, then press Cancel again to clear the display. If the code comes back right away, don't keep trying cycles, because the tray float is still being seen as tripped.

  2. Check for suds in the tub

    Open the door and look for foam, bubbles, or a soap film around the sump. If you see suds, leave the door open so the foam can settle, wipe out what you can reach, and use only automatic dishwasher detergent from here on.

  3. Look for water in the lower drip tray

    The water that trips this code is often under the tub, so the inside of the dishwasher can look dry. If your model has a front drip tray that slides out without removing panels, pull it gently, empty it, and stop if the float switch wire starts to stretch.

  4. Check a new install for supply leaks

    Look under the sink and at the front lower area for drips from the water line. A cross-threaded 90 degree elbow, missing rubber washer, or loose coupling can put water into the base tray during the first fills.

  5. Check the drain hose under the sink

    The drain hose should rise high in the cabinet before it connects to the sink drain or disposal. If a disposal was just installed or replaced, the knockout plug at the dishwasher hose port must be removed, or the dishwasher may not drain and water can back up in the hose.

  6. Think back to the last load

    Regular dish soap, hand soap residue, or homemade soap residue can make enough foam to push water into the base tray. That is the detail owners miss: the tub can be empty while the little flood pan below it is still wet.

Dishwasher tub with the filter in the floor under the lower spray arm and the drain hose to the sinkFilter (twists out)Lower spray armDisposal or air gapDrain hose
The filter sits in the tub floor under the lower spray arm. Water leaves through the drain hose to the disposal or an air gap at the sink.
When it's a repair

A technician will usually start by drying the base tray and finding why water reached it, then test the float switch, its connector, and the drain setup before replacing parts. The likely repair points are a wet tray, a loose or failed float switch, damaged float wiring or connector, a leaking fill elbow or inlet valve connection, a drain setup issue, then a door, tub, or leveling leak found during a fill and wash test. If the dishwasher is an older basic model with a cracked tub, rusted base, or repeated leak faults from several worn parts, replacement often makes more sense than a larger repair. On a newer Whirlpool-built Maytag, this one is usually worth a proper diagnosis.

Models where this shows up most

This fault is reported on Maytag MDB4949SKZ and MDB8959SKW machines in the source cases. These Whirlpool-family Maytag platforms use a lower drip tray float to trigger the E4 F8 leak fault.

Error code lists

Every Maytag dishwasher error code in one table, with what each means and what to check first →

Have the model number ready

The company will ask for it first. It's on a sticker or metal plate, usually in one of these spots:

Where the model tag usually is on a dishwasher12
  1. Open the door: on the left or right edge of the tub or door
  2. Some models: on the top edge of the door
Worth knowing

Conditions that make this more likely

Inlet screens clog quietly

The small mesh screens where the hoses meet the machine catch sediment and scale. On hard water or an older supply line, a screen can block enough within a few years to trigger a fill error. Cleaning them is a common fix.

The house drain can be the real problem

Older homes often have narrow or partly blocked standpipes and drain lines. If the machine's own filter and hose are clear, the house drain is the next suspect, and that's a plumbing call rather than an appliance call.

What a technician tests

Most likely part first. These are for a technician with a meter and the tech sheet, not a weekend project.

PartHow it's tested
Base tray and leak floatThe tech pulls the toe area apart, checks the flood pan for standing water, soap residue, or a water trail, then dries the tray and runs a controlled fill. If the drain pump starts and the control blocks operation while the pan is wet, the leak system is doing its job.
Float switchWith power off, the switch is checked for continuity at the switch terminals. It should read closed with the float down and open when the float is lifted; a switch that stays open with the float down, or never changes, is bad.
Float switch connector and wiringThe connector is checked for a fully seated lock tab, bent pins, and broken conductors near the plug. This matters on new installs because the float connector is easy to tug when the drip pan is handled.
Water inlet connection and 90 degree elbowThe fill elbow, rubber washer, and valve threads are inspected for cross-threading, loose fit, or a drip that only appears during fill. The fill hose routing is checked so it exits the rear left area, and the power wire is kept away from the motor and lower tub.
Drain hose and disposal connectionThe drain hose is checked for a high loop under the sink, a clear disposal port, and signs of sink water backing toward the dishwasher. A bad setup can bring soap residue or dirty water back into the tub, then suds can overflow into the tray.

Don't see your symptom?

Describe it on the phone. The company on the other end works on these every day and will know what to ask.

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Common questions about appliance repair

Can I reset Maytag dishwasher code E4 F8?

Yes. Press Cancel once to stop the tone, then press Cancel again to clear the code. If the tray is still wet or the float switch circuit is open, the code will return.

Why is there no water inside the dishwasher?

The leak sensor is under the tub, in the base tray. Suds or a small leak can put water there while the wash tub looks dry.

Is E4 F8 the same as F8 E4?

Yes for this fault. The published format is F8E4, shown as F8 then E4 or 8 blinks then 4 blinks, but owners often read the alternating display as E4 F8.

Should I turn the breaker off?

If there's active leaking or you can't shut the water off, don't use the breaker as a reset. Keep the door closed, press Cancel once, and call service. A power reset may clear the display, but it won't dry the tray or fix the float circuit.

Is this common on a new dishwasher?

It can happen after installation if the water supply fitting leaks, the float connector is loose, or the drain hose is set up wrong. If it's newly installed, have the installer or a repair company check those points before parts are replaced.

Still showing the problem after the checks?

Call and describe what you tried. You'll be connected with an independent repair company near you.

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