E17
LG Dryer
Severity: ModerateWhat Does This Error Mean?
The E17 error on an LG dryer means the dryer detected an overheating condition — the temperature inside rose above the safe threshold during a drying cycle. The machine shuts down to protect your clothes from heat damage and to prevent a fire risk. A blocked vent is the most common cause.
Affected Models
- DLGX5501V
- DLE7300VE
- DLHC1455V
- DLEX3900B
- Most LG electric and gas dryers
Common Causes
- Exhaust vent or duct is blocked with lint, preventing hot air from escaping
- Lint filter is heavily clogged and restricting airflow
- Exterior vent cap is blocked by debris, a bird's nest, or snow
- Heating element is stuck in the on position and not cycling off
- Thermistor or high-limit thermostat malfunction causing a false overheating reading
How to Fix It
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Unplug the dryer and let it cool for 30 minutes before doing anything.
The interior components will be very hot after an overheating shutdown. Allow time to cool before touching anything inside.
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Remove and clean the lint filter.
A lint filter clogged with fluffy buildup significantly restricts airflow. It should be cleaned before every single load.
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Disconnect the flexible duct from the back of the dryer and clean it out.
Use a dryer vent brush or a vacuum with a hose attachment. Lint buildup in the duct is very common after a year or two of use.
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Check the exterior vent cap on the outside wall of your home.
Push the flap open by hand — it should move freely. Clear any lint, debris, or nesting material blocking it.
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Reconnect the duct, plug the dryer in, and run a short test cycle with a light load.
If E17 returns despite a clean vent and filter, a heating element, thermostat, or thermistor is likely faulty. Call a technician.
When to Call a Professional
If clearing the vent and lint filter does not stop E17, the heating element or thermostat needs professional testing. A heating element that cannot shut off is a fire hazard. Do not continue using the dryer until this is confirmed safe. Expect repair costs of $120–$260.
Frequently Asked Questions
How do I know if my dryer vent is blocked?
Signs of a blocked dryer vent include: clothes taking more than one cycle to dry, the outside of the dryer getting very hot, a burning smell during drying, and the dryer shutting off mid-cycle. You can also check by disconnecting the duct and running the dryer — if the heating issue disappears, the duct was the problem.
How long should a dryer vent be?
The total length of your dryer vent duct should not exceed 35 feet. Every 90-degree elbow reduces the allowable length by about 5 feet. Longer or more complex duct runs restrict airflow and cause overheating. If your duct is too long, a booster fan can help.
Is E17 a fire safety risk?
Yes — overheating is the leading cause of dryer fires. Never ignore repeated E17 errors. If clearing the vent does not stop it, have the machine inspected before using it again. A heating element that cannot shut off can ignite lint inside the dryer.