Whirlpool Dryer Error Code F3 E2 — Moisture Sensor Failure
What this means
The F3 E2 error code on Whirlpool dryers indicates the moisture sensor has failed to register moisture readings for five or more consecutive drying cycles. The moisture sensor consists of two metal strips inside the drum that detect the dampness of the laundry. When coated with dryer sheet residue or when the sensor fails electrically, it cannot send data to the control board, and the dryer may over-dry or under-dry clothes.
Alternate codes: F3E2
Step-by-step fix
4 stepsLocate and clean the moisture sensor bars
Open the dryer door and find the two metal sensor strips — they are typically located on the inside of the drum, near the lint filter opening. Dampen a cloth with rubbing alcohol and wipe the sensor bars thoroughly to remove any film or residue.
Dryer sheets leave a waxy coating on these sensors over time. Switching to liquid fabric softener or dryer balls can prevent this buildup.
Lightly sand the sensor bars if needed
If the sensor bars still feel coated after wiping with alcohol, use fine 220-grit sandpaper to gently buff the surface of each bar until it is bright and clean. Wipe away any sanding dust with a clean cloth.
Do not use coarse sandpaper — you only need to remove the surface film, not scratch the metal.
Reset the error code
Turn off the dryer circuit breaker for 1 minute, then turn it back on. Run a load of damp towels using an automatic (sensor-based) dry cycle. The error should clear after the sensor successfully reads moisture.
Use a load of damp towels rather than a small or very dry load — the sensor needs sufficient contact with damp fabric to register.
Test or replace the sensor if cleaning fails
If cleaning does not resolve the error, use a multimeter to check continuity between the sensor terminals when a damp cloth bridges the two bars. If there is no change in resistance, the sensor or its wiring has failed and needs replacement.
The sensor wiring runs behind the drum — if the wires are damaged, the entire sensor assembly usually needs replacement.
When to call a professional
If cleaning and testing the sensor does not resolve the issue, and you suspect the wiring behind the drum is damaged, a technician can access the internal wiring more easily.
Related error codes
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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