KitchenAid Dryer Error Code E6 — Exhaust High Limit Fault
What this means
Error code E6 indicates the exhaust temperature has risen above 190 degrees F (87.7 degrees C), triggering the high-limit safety shutoff. This is a critical safety error most commonly caused by a restricted exhaust vent system that prevents hot air from escaping. It can also be caused by a faulty high-limit thermostat or a failed cycling thermostat that allows the heater to run continuously.
Step-by-step fix
5 stepsStop using the dryer immediately
Do not continue running the dryer until the cause is identified. Excessive exhaust temperatures are a fire hazard.
This is a safety-critical error — take it seriously.
Clean the exhaust vent system
Disconnect the exhaust vent from the dryer. Use a vent cleaning brush and vacuum to thoroughly clean the entire duct run from the dryer to the exterior vent hood.
A clogged vent is the #1 cause of dryer fires. Have the vent professionally cleaned annually.
Check the exterior vent hood
Go outside and verify the vent hood flap opens freely. Remove any lint, debris, or animal nests blocking the exhaust outlet.
The flap should swing open easily when pushed — a stuck flap traps all the hot air.
Test the high-limit thermostat
Unplug the dryer and access the heating assembly. Use a multimeter to test the high-limit thermostat for continuity. A tripped thermostat shows no continuity and must be replaced.
Even if the thermostat has continuity, it may be malfunctioning intermittently. Replace it if the vent is clear but the error recurs.
Test the cycling thermostat
Also test the cycling thermostat, which regulates normal operating temperature. A failed cycling thermostat can allow the heater to run continuously.
The cycling thermostat is mounted on the blower housing; the high-limit thermostat is on the heating element housing.
When to call a professional
If you cannot identify or reach the vent blockage, or if thermostats test good but the error recurs, professional service is essential. This is a fire safety issue.
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.
Learn more about our sourcesParts you may need
High-Limit Thermostat
Part #WP3977767 · $8–$15
Required if thermostat has tripped or failed
Cycling Thermostat
Part #WP3387134 · $8–$15
Required if thermostat fails to regulate temperature
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