Whirlpool Dishwasher Error Code FC — What It Means & How to Fix It

What Does This Error Mean?

Whirlpool dishwasher error FC means there is a fault with the water inlet flow — specifically, the flow meter or water inlet valve is not performing as expected. The dishwasher is not getting the right amount of water at the right time. Washing performance will be poor or the cycle will stop entirely.

Affected Models

WDT730PAHZ
WDT780SAEM
WDT970SAKZ
WDTA50SAHZ
WDF560SAFM

Common Causes

The water supply valve under the sink is not fully open, restricting water flow into the dishwasher
The water inlet valve screen is clogged with mineral deposits or debris from the water supply
The flow meter — a sensor that measures water entering the machine — has failed
Water pressure in the home is too low for the dishwasher to fill correctly
A kinked or pinched water inlet hose is restricting the flow of water

How to Fix It

Check the water supply shut-off valve under the kitchen sink. Make sure it is fully open — turn it counterclockwise until it stops.

A partially closed valve reduces water pressure and flow into the dishwasher, triggering FC.
Check your home's water pressure. Fill a 1-gallon jug from your kitchen tap and time how long it takes.

It should fill in about 30 seconds or less. If it takes much longer, low home water pressure may be the cause.
Turn off the water supply and disconnect the water inlet hose from the back of the dishwasher.

Inspect the hose for kinks. Also check the inlet port on the dishwasher — there is a small mesh screen that catches debris. Remove it and rinse under water.
Clean the inlet valve screen with warm water. Reinstall and restore water supply.

Mineral buildup from hard water is a common cause of restricted flow. The screen is easy to clean in 5 minutes.
If all the above check out, run the dishwasher and observe whether it fills. If FC returns, the inlet valve or flow meter needs replacement.

A technician can test the flow meter and inlet valve electrically to confirm which has failed before ordering parts.

When to Call a Professional

Checking water supply valves and water pressure is free and easy. A new water inlet valve costs $25 to $60. If the flow meter has failed, the part costs $30 to $70. Professional repair for inlet valve or flow meter replacement runs $100 to $180.

Frequently Asked Questions

How do I know if my dishwasher's water inlet valve is clogged versus failed?

A clogged inlet valve has restricted flow — water enters but very slowly. A failed valve either lets no water in at all, or allows water in continuously even when it should be closed. If you clean the screen and still have poor fill, the valve itself may have a stuck solenoid and needs replacement.

Can hard water cause the FC error?

Yes — hard water deposits mineral scale inside the inlet valve and on the flow meter over time. This restricts flow and can cause the flow meter to give inaccurate readings. Using a dishwasher salt or water softener if you have hard water helps prevent this buildup.

Does the FC error mean my dishes are not being washed?

If the dishwasher is not getting enough water, it will either wash poorly or stop the cycle midway. Dishes may come out still dirty or with food residue. Do not continue using the dishwasher until FC is resolved — running a cycle without proper water can also damage the pump.