LG Washer Error Code tE4

The tE4 code means the steam generator thermistor has been detected as open or shorted. The thermistor is a temperature sensor built into the steam generator assembly, and when it fails, the washer cannot safely operate the steam cycle. This code appears during the drying cycle or in test mode.

The washer will typically prevent the steam cycle from operating when the tE4 code is active, which is a protective measure. Non-steam wash cycles may still function depending on the model, but continuing to use the machine without addressing the fault is not recommended. Running the appliance with a compromised steam generator thermistor could lead to uncontrolled heating within that assembly.

The cost to repair a tE4 error depends on whether you hire a technician or do it yourself. A replacement steam generator part typically falls in the range of $80 to $200 depending on the specific model. If you use a professional repair service, expect total costs including labor to fall somewhere in the range of $150 to $350.

Replacing the steam generator is the recommended fix for tE4, and a confident DIYer with basic appliance repair skills can often complete this repair. You will need to access the steam generator, disconnect the water line and wiring harness, and install the new assembly. Before ordering the part, check that the wiring connector to the steam generator is fully seated and undamaged, as a loose connection can sometimes cause the same code.

A power reset by unplugging the washer for a few minutes may temporarily clear the code, but it will return as soon as the steam generator is used again and the thermistor fault is re-detected. The underlying hardware failure must be corrected by replacing the steam generator assembly for the code to clear permanently.