Maytag Washer Error Code 15

Error code 15 means the control board has detected that the thermistor, the temperature sensor in the washer, is reading outside its acceptable resistance range. This tells the washer that water temperature cannot be reliably monitored, so it stops the cycle to prevent improper operation. The cause is usually the thermistor itself or a wiring connection problem.

Running the washer with code 15 active is not recommended. Because the thermistor is out of range, the washer cannot accurately control or verify water temperature, which could result in clothes being washed at incorrect temperatures or potential overheating depending on your model. The washer will typically stop the cycle and refuse to run until the fault is resolved.

Disconnect power to the washer, then locate and unplug the thermistor connector. Set a multimeter to measure resistance (ohms) and probe the two thermistor terminals. Compare the reading to the resistance specification in your model's service documentation, which is often listed at room temperature around 68 degrees Fahrenheit. A reading of infinite resistance (open circuit) or zero resistance (short circuit) confirms a failed thermistor that needs replacement.

Start by unplugging the washer for a few minutes and restarting to rule out a temporary glitch. If code 15 returns, locate the thermistor, check its wiring harness connector for looseness or corrosion, and reseat the connection. If the connector looks clean and secure, use a multimeter to test the thermistor's resistance against the value specified in your model's service manual. A reading outside spec confirms the thermistor needs replacement, which is a repair most DIYers with basic appliance experience can complete.

If the fix is a loose or corroded wiring connection, the repair costs nothing beyond your time. A replacement thermistor typically costs between $15 and $50 depending on the Maytag model. If the main control board is at fault, parts alone can run $100 to $250 or more. A service technician call will add $80 to $150 in labor, so diagnosing the thermistor and wiring yourself before calling for service can save significant money.