LG Washer Error Code E-23

E-23 on an LG washer is a temperature sensor T1 maximum time error, meaning the washer could not complete preheating the water within the expected time frame. The control board monitors how long the heater runs and triggers this code when the T1 sensor does not confirm the target temperature was reached in time. This fault points to problems with the heater element, the heater drive circuit, or the T1 temperature sensor itself.

You should not continue running the washer while E-23 is active. The machine has halted the cycle because the heating system is not functioning correctly, and bypassing or ignoring the fault could lead to improper wash results or further damage to internal components. Address the underlying fault before resuming normal use.

Repair costs vary depending on which component has failed. Replacing a heater element typically runs in the range of $100 to $250 including parts and labor, while a control board replacement can cost $200 to $400 or more depending on the model. A T1 temperature sensor replacement is generally less expensive, often in the $80 to $150 range. Getting a diagnostic assessment from a technician first will help pinpoint the exact faulty part before committing to a repair cost.

Some steps can be performed by a knowledgeable DIYer, such as inspecting wiring connectors for corrosion or looseness and cleaning scale from the heater element. However, testing heater terminal voltages and replacing the heater element or control board components involves working with line voltage and requires appropriate safety precautions and tools. If you are not comfortable with electrical diagnostics, a qualified appliance technician should handle the repair.

A reset may temporarily clear the code, but if the underlying problem with the heater element, heater drive circuit, or T1 sensor has not been resolved, the error will return as soon as the machine attempts another heated wash cycle. A reset is useful for ruling out a transient fault, but a proper component diagnosis is necessary for a lasting fix.