F22
KitchenAid Dryer
Severity: ModerateWhat Does This Error Mean?
F22 means the outlet thermistor — the sensor that monitors exhaust air temperature leaving the drum — has failed open. An open thermistor has resistance too high for the control board to read, so no temperature data is available. The dryer stops heating as a safety measure until the sensor is replaced.
Affected Models
- KitchenAid Front-Control Dryer
- KitchenAid KHED Series
- KitchenAid YKEDB Series
- KitchenAid Artisan Series Dryer
Common Causes
- Outlet thermistor has failed open — its resistance is too high for the control board to read
- Wiring harness connector to the thermistor has worked loose or disconnected
- A wire in the thermistor harness has broken internally due to wear or flexing
- Thermistor terminals are corroded, preventing electrical contact
- Control board port receiving the thermistor signal has failed
How to Fix It
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Unplug the dryer for 5 minutes and restart a cycle.
A power reset rules out a transient board fault. If F22 returns immediately, the thermistor or its wiring has genuinely failed.
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Check the thermistor harness connector for looseness or visible damage.
The outlet thermistor is mounted on the exhaust duct near the rear of the drum. Its two-wire connector can work loose over time.
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Disconnect and firmly reconnect the thermistor connector.
A connector not fully seated reads as open circuit — exactly the same signal as a failed sensor.
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If reconnecting the connector does not clear F22, have a technician test the thermistor resistance.
A working NTC thermistor reads several thousand ohms at room temperature. Open circuit or infinite resistance confirms the sensor has failed.
When to Call a Professional
F22 requires replacing the outlet thermistor or its wiring harness. A technician can confirm the diagnosis with a resistance measurement and replace the sensor in one visit.
Frequently Asked Questions
Will the dryer still tumble if F22 appears?
On most KitchenAid models, the control board disables all functions when F22 is active. Some models allow tumbling without heat, but most stop completely until the thermistor is replaced.
How much does a thermistor replacement cost?
A replacement outlet thermistor for a KitchenAid dryer typically costs $15 to $50 for the part. With technician labor, the total repair usually runs $80 to $160.
What is the difference between F22 and F23?
F22 means the thermistor is open — no signal or resistance too high. F23 means the thermistor is shorted — resistance too low, reporting a false high temperature. Both require replacing the thermistor.