Kenmore Dryer Error Code EF8

The EF8 error code on a Kenmore dryer indicates that the control system has detected a stuck or continuously active key input. The dryer's control board monitors the state of each button on the console. When a button signal remains active longer than the expected duration without being released, the board interprets this as a fault condition and triggers the EF8 code. This prevents the dryer from operating normally, since a stuck input could cause unintended cycle behavior.

The two primary components involved are the console button assembly and the Interface Board (also called the user interface control board). The console houses the physical buttons, which use membrane-style or tactile switch contacts to send signals to the Interface Board. If a button becomes physically jammed, deformed, or contaminated with debris or moisture, it can hold the contact closed continuously. In other cases, the button itself may release correctly but the Interface Board misreads the signal due to an internal failure on the board, such as a faulty input circuit or damaged trace.

Diagnosis begins by pressing each button individually and checking whether it activates and releases normally. A button that feels stuck, spongy, or does not spring back is a strong indicator of a console assembly defect. If all buttons feel and function physically correct but the EF8 code persists, the Interface Board is likely the source of the fault and will need to be replaced. Moisture intrusion from cleaning sprays or a laundry-room humidity issue can accelerate failure in both components.