Maytag Dishwasher Error Code F4E1 — What It Means & How to Fix It

What Does This Error Mean?

F4E1 means your Maytag dishwasher's flowmeter — which measures how much water enters the tub — has detected an abnormal reading. Either too much or too little water flowed through, and the control board stopped the cycle because it cannot confirm the fill was correct. A partially clogged inlet valve, low water pressure, or a faulty flowmeter are the most common causes.

Affected Models

Maytag MDB7959SHZ
Maytag MDB4949SHZ
Maytag MDB8959SFZ
Maytag MDB Series

Common Causes

Water inlet valve is partially clogged with mineral deposits, restricting flow below the expected rate
Household water pressure is too low, causing the fill to take longer than the flowmeter expects
Flowmeter itself has failed and is sending an incorrect pulse count to the control board
Water supply valve under the sink is not fully open
Inlet valve screen (filter) is partially blocked by sediment

How to Fix It

Check the water supply valve under the sink and confirm it is fully open (turned counterclockwise as far as it goes).

A partially closed supply valve is one of the most common and easiest causes to fix — takes 10 seconds to check.
Turn off the supply valve and disconnect the inlet hose at the dishwasher. Inspect the small filter screen inside the hose connection.

Use a small flathead screwdriver to remove the screen. Rinse it under running water to clear sediment buildup.
Reconnect the hose, turn on the supply, and run a short rinse cycle to check whether F4E1 clears.

If the fill sounds normal and the cycle completes, the filter screen was the cause.
If F4E1 returns, check your household water pressure. Maytag dishwashers require a minimum of 20 PSI at the inlet.

Low water pressure is common during peak usage hours. If other fixtures also have low pressure, contact your water utility.
If supply and pressure are normal, have a technician test the flowmeter and water inlet valve.

The flowmeter is typically integrated into the water circuit at the inlet. Testing requires measuring the pulse signal it sends to the control board during a fill.

When to Call a Professional

If checking the supply valve and cleaning the inlet filter does not resolve F4E1, the flowmeter or inlet valve needs professional testing. A technician can measure flow rate and replace the failed component in a single visit.

Frequently Asked Questions

What does the flowmeter do in a dishwasher?

The flowmeter measures the volume of water entering the tub during a fill cycle by counting pulses generated as water spins a small impeller. The control board uses this count to confirm the correct amount of water has entered before starting the wash.

Can hard water cause F4E1?

Yes. Mineral buildup from hard water is a common cause of F4E1 — it clogs the inlet valve screen and the flowmeter impeller, reducing water flow below the expected rate. Cleaning the screen regularly and using a water softener reduces the risk.

How much does a flowmeter replacement cost?

A replacement flowmeter for a Maytag dishwasher typically costs $30 to $80 for the part. With technician labor, the total repair usually runs $130 to $220.