LG Microwave Error Code TE

The TE error code on an LG microwave stands for touch communication error. It activates when the microwave's control system does not receive valid signals from the touch membrane for 10 consecutive seconds. The two components most often responsible are the touch switch membrane inside the door assembly and the Sub Module PCB. Identifying which keys are failing, all of them, some intermittently, or just one, helps pinpoint which part needs replacement.

When the TE error is active, the touchpad is not communicating reliably, which means you may not be able to start, stop, or control the microwave properly. Using an appliance with a non-functional control interface is not recommended, as you could lose the ability to interrupt a cooking cycle. It is best to stop using the microwave until the fault is resolved.

Repair costs vary depending on whether the Assy Door-A assembly or the Sub Module PCB needs replacement and whether you hire a technician or purchase parts yourself. Parts alone typically range from around $30 to $150 depending on the specific model and component. Adding professional labor, total repair costs often fall in the range of $100 to $250. For older or lower-cost microwave models, comparing repair cost to replacement cost is worth considering before proceeding.

Some DIY-capable homeowners can address this error by replacing the Assy Door-A assembly or the Sub Module PCB, as both are discrete components. However, microwave interiors contain a high-voltage capacitor that can retain a lethal charge even when unplugged, so disassembly should only be attempted by someone comfortable with high-voltage appliance safety procedures. If you are not experienced with this type of repair, hiring a qualified technician is strongly recommended.

Unplugging the microwave for a minute and restoring power may temporarily clear the TE display if the communication dropout was caused by a transient glitch. However, if the underlying touch membrane or Sub Module PCB is physically degraded, the error will return once the microwave attempts to read the touchpad again. A persistent TE code requires component inspection and likely replacement to resolve permanently.