Maytag Washer Error Code F23

F23 indicates a dryer exhaust thermistor shorted error. The control board has detected that the exhaust thermistor resistance has dropped below 500 ohms, which corresponds to a temperature above 120 degrees Celsius (250 degrees Fahrenheit). This condition must last at least one minute during normal operation to trigger the code, or it triggers immediately during Factory Diagnostic Mode. The fault points to either a failed thermistor, a wiring short, or an actual overheating condition in the exhaust system.

No, you should not continue operating the appliance while the F23 code is active. The error indicates either a faulty temperature sensor or a real overheating condition in the exhaust system. Running the unit without resolving the underlying cause could result in further component damage or create a fire risk if actual overheating is occurring.

Repair costs depend on the cause. If the fix is simply cleaning a blocked exhaust duct or reseating a connector, costs can be minimal. Replacing a failed exhaust thermistor typically involves a low-cost part, with the repair ranging from roughly 20 to 80 dollars for a DIY fix including the part. If a technician is needed or the control board requires replacement, total costs can range from 150 to 400 dollars or more depending on parts and labor rates in your area.

Start by checking the exhaust thermistor resistance with a multimeter and inspect all wiring and connectors in the thermistor circuit for damage or corrosion. If the thermistor reads below 500 ohms at room temperature, it has failed and needs to be replaced. Also inspect the exhaust duct for blockages or kinks that could be causing a genuine overheating condition. If the thermistor and wiring check out, the control board may need further evaluation.

A power reset may temporarily clear the error display, but the code will return if the underlying fault condition is still present. Because the fault in Run mode requires the low-resistance condition to persist for a full minute, a reset might delay the code reappearing, but it will not resolve the problem. The thermistor, wiring, and exhaust path must be inspected and repaired to permanently clear the fault.