Maytag Dryer Error Code F-23

F-23 indicates that the exhaust thermistor has shorted, with the control board detecting a resistance below 500 ohms, which corresponds to a temperature above 250 degrees Fahrenheit. In Run mode, the fault requires this condition to persist for one full minute before locking out. In Factory Diagnostic Mode, the fault is triggered immediately. The dryer shuts down to prevent a potential overheating hazard.

No. The F-23 code indicates either a faulty temperature sensor or a genuine overheating condition in the exhaust system. Running the dryer without resolving the fault could allow temperatures to rise unchecked, increasing the risk of damage to the appliance or a potential fire hazard from an overheated exhaust duct. Do not operate the dryer until the cause has been identified and corrected.

Repair costs depend on the faulty component. Exhaust thermistor replacement is typically the least expensive fix, with parts generally ranging from around 15 to 50 dollars plus labor if a technician is used. Vent cleaning is low cost if done as DIY maintenance. A control board replacement represents the higher end of the cost range and can run from roughly 100 to 300 dollars or more for parts alone, depending on the specific model.

A knowledgeable DIYer can address some causes of F-23, particularly cleaning out a clogged exhaust vent or inspecting the wiring harness for visible damage. Replacing the exhaust thermistor is also a straightforward repair if you are comfortable disconnecting wiring connectors and removing a sensor probe. Replacing the control board is more involved and may be better suited to a professional technician.

A reset may temporarily clear the fault display, but the F-23 code will return as soon as the dryer runs and the control board again reads a thermistor resistance below 500 ohms. Because the underlying cause, whether a shorted sensor, restricted venting, or wiring issue, has not been resolved, resetting alone is not a fix. The root cause must be diagnosed and corrected.