Maytag Microwave Error Code Error 2

Error 2 indicates that the control board has detected an open or short circuit in the humidity sensor thermistor circuit. The microwave measures resistance at connector S201 and expects approximately 2.5K ohms across each thermistor at 20 degrees Celsius. When the readings fall outside acceptable limits, the unit stops operating after about 17 seconds to prevent further issues.

The microwave is designed to shut itself off after approximately 17 seconds when Error 2 is active, so continued normal use is not possible. You should not attempt to bypass or ignore this shutdown. The fault should be diagnosed and repaired before returning the unit to service.

If only the connector at S201 needs cleaning or reseating, the repair may cost little to nothing beyond diagnostic time. Replacing the humidity sensor typically runs in the range of 30 to 80 dollars for the part, with labor adding 80 to 150 dollars if a technician performs the work. A full control board replacement, if needed, can push total repair costs into the 150 to 300 dollar range depending on the model.

A knowledgeable DIYer can start by inspecting and reseating connector S201 and measuring resistance across the specified pins with a multimeter. If the connector is secure and readings are correct, the humidity sensor or wiring harness may need replacement. However, microwave capacitors can hold a lethal charge even when unplugged, so internal repairs should only be attempted by those familiar with high-voltage appliance safety procedures.

Unplugging the microwave and restoring power may temporarily clear the display, but the error will return once the control board checks the sensor circuit again. Because Error 2 points to a specific electrical fault in the humidity sensor circuit, a reset alone will not resolve the underlying problem. The sensor, connector, and wiring need to be inspected and tested.