Maytag F23 Dryer Error — What it Means
The F23 error code on a Maytag dryer typically indicates a problem with the dryer’s moisture sensing circuit or related electronics. When the dryer cannot correctly detect or interpret humidity signals from the moisture sensor, it may display F23 and either stop the drying cycle or run incorrectly. This fault commonly shows up on many Maytag electric and gas dryers and can be triggered by a shorted or open sensor, damaged wiring, a failed control board, or contamination on the sensor bars. Users usually notice longer drying times, loads stopping unexpectedly, premature cycle termination, or the dryer failing to advance through automatic sensing cycles. In some situations, unresolved sensor faults can increase energy usage and — if paired with airflow restrictions or heater faults — elevate safety risks like overheating.
Common Causes
- Soiled or corroded moisture sensor bars (soap residue, fabric softener, lint)
- Damaged or loose wiring harness or connector to the moisture sensor
- Short or open circuit in the moisture sensor assembly
- Faulty electronic control board (main control / user interface)
- Failed thermistor or temperature sensor that confuses the sensing circuit
- Severe vent blockage or airflow problems that change drying behavior (can mask as sensor issue)
- Water or liquid contact to controls or sensor area (spills, high humidity)
Troubleshooting Steps
- Power cycle the dryer: unplug or switch off breaker for 1–2 minutes, then restore power to clear transient faults and see if F23 returns.
- Clean the lint screen and sensor bars: remove lint screen and wipe the metal sensor bars inside the drum with a soft cloth and rubbing alcohol to remove residue.
- Inspect exhaust and venting: make sure the dryer vent, hose and exterior vent are free of lint and restrictions. Restricted airflow can lengthen cycles and confuse sensing logic.
- Check sensor wiring and connectors: disconnect power and examine the moisture sensor harness for pin corrosion, broken wires, or loose plugs. Reseat connectors securely.
- Run diagnostic mode: if your Maytag model supports it, enter diagnostics to view live sensor readings and error history to confirm whether the moisture sensor or control board reports faults.
- Measure sensor resistance: with power off, use a multimeter to test the moisture sensor or thermistor per your model’s service specs. An open or out-of-spec reading suggests replacement.
- Test continuity to the control board: check the harness from the sensor to the control board for continuity to rule out a broken wire inside the cabinet.
- Swap or bypass (temporary test only): if you have an identical working sensor or known-good board, carefully swap components to isolate the faulty part. Only do this if experienced with appliance repair.
- Replace failed component: if testing points to a bad moist