Maytag Dryer Error Code F28 — Moisture Sensor Fault
What this means
The F28 error on Maytag dryers indicates the moisture sensor system is not working correctly. The moisture sensor consists of two metal bars inside the drum that detect how wet the clothes are by measuring electrical conductivity. When the sensor fails, the dryer cannot determine when clothes are dry, leading to over-drying or prematurely stopping cycles.
Step-by-step fix
4 stepsClean the moisture sensor bars
Open the dryer door and locate the two metal strips (usually near the lint screen opening or on the front drum bulkhead). Clean them with rubbing alcohol or fine sandpaper to remove dryer sheet residue and fabric softener buildup.
Dryer sheets leave a waxy film on the sensor bars that insulates them and prevents accurate readings. This is the most common cause of F28.
Run a test cycle
After cleaning the sensors, run a sensor-dry cycle with a small load of damp towels. If the cycle adjusts time based on dampness, the sensor is working again.
Consider switching from dryer sheets to dryer balls to prevent future sensor buildup.
Check the sensor wiring
Disconnect power. Access the back side of the moisture sensor. Check the wire connections for corrosion or looseness. The wires may run through the door frame area where they can get pinched.
Gently tug each wire at the connector to check for a break hidden inside the insulation.
Replace the moisture sensor if needed
If the sensor bars are clean and wiring is intact but the error persists, replace the sensor assembly. Remove the mounting screws, disconnect the wires, and install the new sensor.
The moisture sensor is usually a small, inexpensive part — replacement is straightforward.
When to call a professional
If the sensor, wiring, and control board connections are all fine but F28 persists, the control board sensor circuit may be faulty.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Moisture Sensor Bar Assembly
Part #W10833861 · $10–$25
If sensor is damaged or cleaning does not resolve the error
Links may earn us a commission at no extra cost to you. We only recommend parts relevant to this repair.