Kenmore Dryer Error Code F28 — Moisture Sensor Failure
What this means
Error F28 indicates the moisture sensor is not functioning. This sensor consists of two metal strips inside the drum that measure the moisture level of clothes. When it fails, the dryer cannot detect when clothes are dry and may run too long or not long enough on auto-dry cycles.
Step-by-step fix
4 stepsClean the sensor bars
Locate the two metal sensor bars inside the drum (usually near the lint filter). Clean them with fine sandpaper or a cloth dipped in rubbing alcohol.
Fabric softener residue is the most common cause of sensor failure.
Check the wiring
Inspect the wiring harness from the sensor bars to the control board.
Test the sensor
Use a multimeter to test continuity between the sensor bars and the control board connector.
Replace if needed
If cleaning and wiring checks don't resolve the issue, replace the moisture sensor.
When to call a professional
This is usually a DIY repair. Professional service only if the wiring is damaged.
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.
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