Maytag Dryer Error Code F3E2

F3E2 means the control board detected a short circuit in the exhaust thermistor circuit. The thermistor resistance dropped below 500 ohms, which corresponds to a temperature reading above 250°F. This tells the control board the sensor or its wiring has failed and the dryer cannot accurately monitor exhaust temperature. The dryer will stop operating until the fault is resolved.

Start with TEST #4a: Thermistors on page 16 of the Maytag service manual for your model. This test walks you through measuring the exhaust thermistor resistance and checking the wiring harness for a short. In most cases the thermistor has failed and needs replacement. If the thermistor tests good, inspect the wiring harness for damaged insulation or shorted conductors before suspecting the control board.

Yes. A wiring harness that has shorted due to chafing, heat damage, or pinching can pull the thermistor circuit resistance below 500 ohms and trigger F3E2 even when the thermistor itself is functioning correctly. The TEST #4a thermistor procedure in the service manual includes steps to isolate whether the fault is in the sensor or the wiring, so follow the full test sequence before ordering a replacement thermistor.

No. The exhaust thermistor is a safety-critical component that helps the control board prevent overheating. With a shorted thermistor, the dryer cannot accurately track exhaust temperatures, which creates a potential fire hazard from uncontrolled heat. Do not continue using the dryer until the thermistor circuit has been diagnosed and repaired.

An exhaust thermistor is typically an inexpensive part, usually between $10 and $30 depending on the model. If you perform the repair yourself using the thermistor test procedure in the service manual, parts cost is the primary expense. A professional repair visit will add labor charges, generally $100 to $200 depending on your area, making total repair cost reasonable compared to replacement.