What's Happening
The tE1 code indicates the inlet thermistor — the temperature sensor positioned near the heating element at the air entry point of the drum — has malfunctioned. Unlike tE3 (exhaust thermistor), tE1 monitors incoming air temperature before it circulates through the drum. A failure here means the control board cannot determine how much heat is entering the drum, so it shuts down the cycle as a precaution. This fault is less common than tE3 and often results from a failed sensor element or loose connector.
How to Fix It
Unplug the dryer and remove the back panel to access the heating element housing. Locate the inlet thermistor — a small two-wire sensor clipped near the element — and disconnect it. Test resistance with a multimeter; it should measure approximately 10,000 ohms at room temperature. Replace it if out of range. Also check the connector and wiring for burns, corrosion, or loose pins. On gas dryers, the inlet thermistor is typically accessible after removing the front panel.
Frequently Asked Questions
What does tE1 mean on an LG dryer?
tE1 means the inlet thermistor — the sensor measuring air temperature entering the drum — has failed or is reporting an invalid reading. The dryer stops as a safety measure since it can no longer monitor heat input.
What is the difference between tE1 and tE3 on an LG dryer?
tE1 refers to the inlet thermistor (measuring air coming into the drum near the heating element), while tE3 refers to the exhaust thermistor (measuring air leaving through the blower). Both cause the dryer to stop, but they are located in different positions and may use different part numbers depending on the model.
How do I fix the tE1 error on my LG dryer?
First check the wire connector on the inlet thermistor and reseat it firmly — this alone clears the code in many cases. If not, test the thermistor's resistance (should be ~10,000 ohms at room temp) and replace it if it reads open or shorted.
Do I need a technician to fix LG tE1?
Most homeowners with basic mechanical comfort can fix tE1 on their own. Accessing the inlet thermistor requires removing the back or front panel depending on the model, but the actual sensor is inexpensive and swaps out with a standard Phillips screwdriver.