KitchenAid Washer Error Code F3E1 — What It Means & How to Fix It

What Does This Error Mean?

F3E1 means the NTC temperature sensor (thermistor) inside your KitchenAid washer has an open circuit — no signal is reaching the control board. The washer cannot confirm the water temperature and stops to prevent the heater from running without a temperature reference. A failed sensor, broken harness wire, or disconnected connector are the typical causes.

Affected Models

KitchenAid Front-Load Washer
KitchenAid KHFW Series
KitchenAid KHHW Series
KitchenAid Artisan Series Washer

Common Causes

NTC thermistor has failed open — its resistance is too high for the control board to read
Wiring harness connector to the thermistor is loose or has been pulled off
Wire in the thermistor harness has broken internally due to wear or pinching
Thermistor terminals are corroded, preventing electrical contact
Control board port receiving the thermistor signal has failed

How to Fix It

Unplug the washer for 5 minutes and restart a cycle to check whether F3E1 clears.

A power reset rules out a transient board fault. If F3E1 returns immediately, the thermistor or its wiring has failed.
Check the thermistor harness connector for looseness or visible damage.

The NTC thermistor is typically mounted at the base of the drum or on the water inlet section. Its small two-wire connector can work loose over time.
Disconnect and firmly reconnect the thermistor connector.

A connector that is not fully seated will read as an open circuit — exactly the same signal as a failed sensor.
If reconnecting the connector does not clear F3E1, have a technician test the thermistor resistance.

A healthy NTC thermistor reads several thousand ohms at room temperature. An open circuit (very high or infinite resistance) confirms the sensor has failed.

When to Call a Professional

F3E1 requires replacing the NTC 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 washer still wash clothes with F3E1?

No. The control board disables the heating element when it cannot read the water temperature — running the heater without a temperature reference is a safety risk. On cold-wash-only cycles the washer may still function, but hot and warm cycles will not complete.

How much does an NTC thermistor replacement cost?

A replacement NTC thermistor for a KitchenAid washer typically costs $15 to $40 for the part. With technician labor, the total repair usually runs $80 to $160.

What is the difference between F3E1 and F3E2?

F3E1 means the thermistor is open (no signal — resistance too high). F3E2 means the thermistor is shorted (resistance too low, reporting a false high temperature). Both require the thermistor to be replaced.