Maytag Dryer Error Code F23

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

1. 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.
2. 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.
3. 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.
4. Check sensor wiring and connectors: disconnect power and examine the moisture sensor harness for pin corrosion, broken wires, or loose plugs. Reseat connectors securely.
5. 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.
6. 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.
7. 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.
8. 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.
9. Replace failed component: if testing points to a bad moisture sensor, harness, or control board, replace the defective part and re-run diagnostics.
10. If F23 returns or if you detect burned electronics, persistent wiring faults, gas valve/heating anomalies or unclear errors, stop and call a qualified technician—especially for gas dryers or any situation involving the heating assembly.

Maintenance / Prevention Tips

• Clean the moisture sensor bars every 1–3 months with isopropyl alcohol to remove residue.
• Clean the lint filter after every load to maintain airflow and prevent sensor confusion.
• Inspect and clean the vent and duct annually (or every 3–6 months for heavy use) to prevent airflow restrictions.
• Use the correct amount of detergent and avoid liquid fabric softener directly on items that will touch the sensor bars.
• Avoid overloading the dryer so items can tumble and the sensors can read properly.
• Replace crushed or kinked vent hoses with smooth, rigid or semi-rigid metal ducting for best airflow.
• Keep the dryer area dry to prevent moisture from reaching electrical components.
• Check connectors periodically for corrosion and apply dielectric grease if appropriate for connectors prone to moisture.
• Run routine diagnostics if your dryer has built-in service modes to catch early sensor abnormalities.
• Have annual preventive maintenance performed by a qualified technician to inspect sensors, wiring, and the control board.
• Do not use bleach or harsh cleaners on the sensor bars; use mild alcohol-based cleaners instead.
• Replace old or brittle wiring harnesses before they fail if you see signs of wear during inspections.

FAQs

Conclusion / Safety Notice

F23 is most often a moisture sensing or related wiring/control issue and is usually repairable. For simple fixes like cleaning the sensor bars, users can often resolve the fault themselves. However, if troubleshooting shows damaged wiring, burned connectors, a failed control board, or if you are working on a gas dryer or heating components, stop and contact a qualified appliance technician. Attempting electrical repairs without proper training can create shock, fire, or gas-leak hazards.

Always disconnect power (and gas for gas dryers) before inspecting internal components. When in doubt, call an authorized Maytag service provider or a certified appliance repair professional for safe, reliable repairs.