Maytag Washer Error Code 15

Error code 15 on a Maytag washer indicates the control board has detected a thermistor reading that falls outside the expected resistance range. The thermistor is a temperature-sensing component, typically located in the wash tub or water inlet area, that continuously reports water or component temperature to the main control board. When the resistance value the board receives is too high, too low, or erratic, it triggers this fault and halts operation to prevent damage from overheating or running without proper temperature regulation.

For homeowners, the thermistor is essentially a small sensor that tells your washer how hot or cold the water is. If this sensor fails, sends a bad signal, or loses its connection to the control board, the washer cannot accurately control wash temperatures and will stop and display error code 15. The problem could be the sensor itself wearing out, a wiring connection that has come loose or corroded, or in less common cases, the control board that reads the sensor signal.

Before replacing any parts, check that the washer is not sitting in an unusually cold or hot environment, as extreme ambient temperatures can push a borderline thermistor out of its acceptable range. A basic visual inspection of the wiring harness connected to the thermistor is a practical first step.