What's Happening
The tE3 code means the dryer's exhaust thermistor has failed or is reading an implausible temperature — either open-circuit (no reading) or short-circuit (out-of-range reading). The thermistor is located in the blower housing and monitors air temperature as it exits the drum. A failed thermistor prevents the control board from regulating heat, so the dryer shuts down as a safety measure. This can also be triggered by a loose wiring harness connector rather than a physically failed sensor.
How to Fix It
Unplug the dryer and locate the thermistor in the blower housing near the exhaust duct. Disconnect the two-pin connector and test resistance with a multimeter — it should read approximately 10,000 ohms at room temperature. If readings are open (OL) or zero, replace the thermistor (part 6323EL2001B). If resistance is correct, inspect the wiring harness for damage or loose connectors and reseat them. Reconnect power and run a test cycle.
Frequently Asked Questions
What does tE3 mean on an LG dryer?
tE3 means the exhaust thermistor — the temperature sensor in the blower housing — has failed or is sending an out-of-range signal. The dryer halts as a safety measure because it can no longer regulate heat without an accurate temperature reading.
How do I fix the tE3 error on my LG dryer?
Start by checking the wiring harness connector on the thermistor and reseating it firmly. If that doesn't clear the code, test the thermistor's resistance with a multimeter — it should be around 10,000 ohms at room temperature. A reading of open (OL) or zero means the thermistor needs to be replaced, which is a straightforward DIY repair.
Can I still use my LG dryer with a tE3 error?
No. The dryer will not run a heat cycle when tE3 is active because the control board has lost its ability to monitor temperature safely. Attempting to bypass this error risks overheating and potential fire. Replace the thermistor before using the dryer again.
How much does it cost to fix a tE3 error on an LG dryer?
The thermistor part (6323EL2001B) costs roughly $10–$25 and is one of the easiest dryer components to replace — no special tools needed. If you hire a technician, expect a $100–$180 service call on top of the part cost.