Maytag Washer Error Code F3E4

F3E4 indicates that the inlet thermistor, the sensor that monitors incoming water temperature, has shorted. The control board detected a resistance reading below 20 ohms, which corresponds to a temperature signal above 391 degrees Fahrenheit. This is a component or wiring fault, not an actual water temperature problem. The thermistor or its wiring harness will need to be tested and likely replaced.

Resetting the washer by unplugging it for a few minutes may temporarily clear the code, but it will return as soon as the control board reads the shorted thermistor signal again. The underlying fault in the thermistor or its wiring must be corrected for the code to stay cleared. A reset is useful for confirming the fault is active and repeatable, but it is not a repair.

If the inlet thermistor is the failed component, the part itself is relatively inexpensive, typically in the range of $15 to $50 depending on the specific model. Adding professional labor, the total repair cost generally falls between $100 and $200. If the main control board is ultimately at fault, parts and labor costs can be significantly higher, often ranging from $200 to $400 or more.

A knowledgeable DIYer can diagnose this code by following the thermistor test procedure, which involves disconnecting the sensor and measuring its resistance with a multimeter. If the thermistor reads below 20 ohms, it is the faulty component and can be replaced. If you are not comfortable working with electrical components or reading wiring diagrams, a qualified appliance technician should perform the repair.

The F3E4 code reflects a failed temperature sensor, not an actual overheating condition, so there is no immediate fire or scalding risk from the code itself. However, with a shorted inlet thermistor, the washer cannot accurately monitor or regulate water temperature, which means wash performance will be compromised. It is best to avoid running full cycles until the sensor is replaced, and the washer may not complete cycles normally while the fault is active.