LG Microwave Error Code C-2

The C-2 code on an LG microwave means the cavity temperature sensor is reading a value outside the acceptable threshold, indicating either an open circuit or a short circuit in the sensor or its wiring. When this condition is detected, the microwave automatically cancels the current cooking operation and enters cancel mode. The fault is tied specifically to the temperature sensor circuit, which includes the sensor itself, the wiring harness, and the connector at the control board.

No. When C-2 appears, the microwave enters cancel mode and stops cooking because the control board cannot confirm safe temperature conditions inside the cavity. Attempting to bypass or ignore this error is not recommended, as the temperature sensor is a protective component. The unit should remain unplugged until the fault is diagnosed and resolved.

Repair costs depend on what component has failed. A replacement temperature sensor part alone typically costs in the range of $15 to $50 depending on the specific model. If a professional technician is needed, labor charges will add to that cost, with total repair estimates commonly ranging from $80 to $200. If the control board or wiring harness is also damaged, costs will be at the higher end of that range or beyond.

Some causes of the C-2 error, such as a loose connector at the PCB, can be addressed by a knowledgeable DIYer after unplugging the unit and allowing the high-voltage capacitor to discharge safely. However, working inside a microwave involves serious electrical hazards, including capacitors that can store a lethal charge even after the unit is unplugged. If you are not experienced with appliance repair and safe capacitor discharge procedures, the repair should be performed by a qualified technician.

A power reset, such as unplugging the unit for a few minutes, may temporarily clear the display, but the C-2 code will return if the underlying fault in the temperature sensor circuit has not been corrected. Because the code triggers when the sensor reading falls outside its threshold, any ongoing hardware problem with the sensor or its wiring will cause the error to reappear as soon as the microwave attempts to operate.