mypros+
Error code reference

KitchenAid Washer Error Code F09

Overflow condition

KitchenAid codesKitchenAid washer codes

Overflow condition - the overflow contact on the pressure switch is closed for more than 60 seconds; door remains locked and drain pump runs constantly.

First step from the service manual

Check the drain hose and make sure it is not plugged or kinked.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for F09.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What F09 means on a KitchenAid washer

The F09 error code on a KitchenAid washer indicates an overflow condition. Specifically, the overflow contact on the water level pressure switch has remained closed for more than 60 seconds, signaling that water inside the tub has exceeded a safe threshold. When this condition is detected, the control board locks the door and runs the drain pump continuously in an attempt to reduce the water level and prevent flooding.

The pressure switch monitors water level by sensing air pressure through a small tube connected to the tub. When water rises too high, the overflow contact closes. If the control board sees this contact stay closed beyond 60 seconds, it triggers F09 and enters a protective state. The most common reasons this happens include a malfunctioning water inlet valve that fails to shut off water flow, a faulty pressure switch that incorrectly reports an overflow, a clogged or kinked drain hose preventing the pump from evacuating water fast enough, or a blocked drain pump filter or pump impeller.

Diagnosis should begin with the drain hose. Confirm it is not kinked, crushed, or plugged, and that it is installed at the correct height to prevent siphoning. If the drain path is clear but the error persists, inspect the water inlet valve for continuous flow even when the machine is not filling. A valve that does not close fully will slowly overfill the tub. The pressure switch and its connecting air hose should also be checked for cracks, blockages, or electrical faults that could cause a false overflow reading.

Source: manufacturer service documentation.

Common causes of F09

  1. 01

    Clogged or Kinked Drain Hose

    Wiring / connection

    If the drain hose is blocked, crushed, or improperly routed, the pump cannot remove water fast enough, causing the tub to overfill. Inspect the full length of the hose for kinks, clogs, or an improper standpipe height that could cause siphoning.

  2. 02

    Faulty Water Inlet Valve

    Part replacement

    A water inlet valve that fails to close completely will allow water to continuously enter the tub even when the control board has not requested a fill. This slow overfill will eventually trigger the overflow contact on the pressure switch.

  3. 03

    Defective Pressure Switch

    Part replacement

    The pressure switch monitors tub water level through an air tube. If the switch itself is faulty or its contacts are sticking, it may incorrectly report an overflow condition even when actual water levels are normal.

  4. 04

    Blocked Drain Pump or Filter

    Wiring / connection

    Debris such as lint, coins, or small garments can clog the drain pump impeller or filter, reducing the pump's ability to drain water quickly enough during a fill cycle. Check and clean the pump filter and verify the impeller spins freely.

  5. 05

    Pinched or Disconnected Pressure Switch Air Hose

    Wiring / connection

    The small rubber hose connecting the tub to the pressure switch must be clear and properly sealed at both ends. A crack, blockage, or loose connection in this hose can cause inaccurate water level readings and trigger a false overflow error.

See the test procedure for each cause

Frequently asked questions about F09

What does F09 mean on a KitchenAid washer?
F09 indicates an overflow condition, meaning the overflow contact on the water level pressure switch stayed closed for more than 60 seconds. The washer responds by locking the door and running the drain pump continuously to reduce the water level. The root cause is typically a drainage problem, a faulty water inlet valve, or a defective pressure switch.
How do I fix the F09 error on my KitchenAid washer?
Start by checking the drain hose for kinks, clogs, or improper installation height. If the hose is clear, inspect the drain pump filter for debris and verify the pump impeller is not jammed. If drainage is functioning properly, the water inlet valve should be tested to confirm it closes fully when power to the valve is cut. A pressure switch that is producing a false overflow reading would also need to be tested and replaced if defective.
Is it safe to use my KitchenAid washer while it shows F09?
No, you should not continue using the washer while F09 is active. The machine has detected an overflow condition and locked the door for safety reasons. Running the washer without resolving the underlying issue risks water overflow onto your floor, potential water damage, and could stress the drain pump if it runs without successfully draining the tub.
Will resetting my KitchenAid washer clear the F09 error?
A power reset may temporarily clear the error code, but if the underlying cause is not corrected, F09 will return as soon as the overflow condition is detected again. Resetting without fixing the problem does not resolve the fault and could allow conditions to worsen. Address the drain hose, pump, inlet valve, or pressure switch before attempting to resume normal operation.
How much does it cost to repair a KitchenAid washer with an F09 error?
Repair costs depend on the cause. If the fix is simply clearing a kinked drain hose or cleaning a clogged pump filter, the cost may be minimal or nothing beyond your own time. Replacing a water inlet valve or pressure switch typically ranges from $50 to $200 in parts depending on the model, plus labor if a technician is needed. A drain pump replacement, if the pump itself is damaged, can range from $100 to $300 or more including parts and labor.

Related KitchenAid washer codes

All KitchenAid washer codes
View all 15 KitchenAid washer codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass