Kenmore Washer Error Code F/05

F/05 means the water temperature sensor (NTC thermistor) is reading a value outside of the acceptable range during the water heating step of the wash cycle. The control board monitors the sensor's resistance to confirm the water is reaching the correct temperature. When that reading falls out of range, the machine stops and displays F/05. The issue typically points to a faulty sensor, a wiring problem, or a failed heating element.

It is not recommended to continue running the washer while F/05 is active. The machine has halted the wash cycle because it cannot confirm proper water heating, meaning your laundry may not be cleaned or sanitized correctly. Continuing to run the appliance without addressing the fault could also mask a developing electrical issue with the heating circuit.

Resetting the washer by unplugging it for a few minutes may temporarily clear the F/05 code, but the error will return if the underlying cause has not been fixed. The code is triggered by a real sensor reading that falls outside the valid range, so a reset alone does not resolve a faulty thermistor, damaged wiring, or failed heating element. Always diagnose and correct the root cause before relying on a reset to restore normal operation.

Many DIYers can resolve F/05 by inspecting and reseating the wiring connections to the NTC sensor or by replacing the sensor itself, which is a straightforward part swap on most Kenmore washer models. Testing the sensor with a multimeter to check its resistance is the recommended first step before purchasing any parts. If the sensor and wiring check out, diagnosing the heating element or control board may require more advanced electrical knowledge.

Repair costs vary depending on which component has failed. A replacement NTC thermistor typically costs in the range of $10 to $40 for the part alone. If the heating element needs replacement, parts can range from $20 to $80. A control board replacement is the most expensive scenario, with parts often ranging from $100 to $250 or more. Adding a professional technician's labor will increase the total cost of any repair.