Kenmore Dryer Error Code E66

E66 means the dryer has detected an open circuit in the thermal limiter system. The Outlet Thermal Limiter is the primary component involved, and on gas models the Inlet Thermal Limiter is also a suspect. These are one-time safety devices that permanently cut the circuit when the dryer overheats. The dryer will not operate again until the fault is corrected and any open thermal limiter is replaced.

No. The E66 code indicates the dryer's thermal safety system has already responded to a dangerous overheating condition. Attempting to bypass or ignore this fault creates a risk of fire. The dryer should remain out of service until the cause of the high-temperature event has been identified and resolved, and any failed thermal limiters have been replaced.

Use a multimeter set to continuity or resistance mode. Disconnect power to the dryer and locate the Outlet Thermal Limiter, then probe both terminals. A working limiter will show continuity, while a tripped one will show an open circuit with no continuity. On gas models, repeat this test on the Inlet Thermal Limiter. Whichever device reads open is the failed component. Also inspect the wiring connectors at each limiter for damage or corrosion that could cause a false open reading.

No, a tripped thermal limiter cannot be reset. These are single-use safety devices that permanently open the circuit when exposed to excessive heat. Clearing the error code without replacing the open thermal limiter will not restore dryer operation. The root cause of the overheating must also be identified and corrected before the replacement limiter is installed.

If the repair involves only replacing one or both thermal limiters and clearing a vent blockage, the parts cost is generally in the range of $10 to $40 per limiter depending on the specific model. If a failed cycling thermostat or damaged wiring is also involved, total parts costs can rise to the range of $30 to $100. Professional labor charges vary by region and are typically billed separately.