Kenmore Dryer Error Code F3E7

F3E7 indicates that the moisture sensor strip circuit has shorted. The moisture sensor bars inside the drum are responsible for detecting how wet the laundry is so the dryer can adjust cycle timing accordingly. This code only appears during service diagnostic mode, not during a standard drying cycle. Diagnosis should start with Test 5 of the service diagnostic procedure to evaluate the sensor circuit.

Because F3E7 only appears in service diagnostic mode and not during normal operation, the dryer will generally continue to run. However, a faulty moisture sensor means the dryer may not accurately detect when clothes are dry, which can lead to overdrying, increased energy use, and unnecessary wear on fabrics. It is advisable to diagnose and correct the fault rather than continuing to rely on the dryer for accurate moisture sensing.

Repair costs depend on the cause. Cleaning the sensor bars costs nothing beyond a small amount of rubbing alcohol. Replacement moisture sensor strips typically range from $15 to $45 for parts, while a new main control board can range from $80 to $200 or more depending on the model. If you hire a technician, expect to add labor costs of $75 to $150 on top of any parts.

Some causes of F3E7 are DIY-friendly, particularly cleaning residue buildup off the sensor bars using rubbing alcohol. However, if the fault is in the wiring harness, the sensor strips, or the control board, repairs involve accessing internal components and working near electrical connections, which requires comfort with appliance disassembly. Following Test 5 in the diagnostic procedure will help you narrow down the cause before purchasing parts.

A power reset may temporarily clear the stored code, but if the underlying short in the moisture sensor circuit has not been resolved, the fault will return the next time a service diagnostic test is run. Clearing the code without addressing the root cause does not repair the sensor circuit and the dryer will continue to operate with inaccurate moisture detection.