LG Refrigerator Error Code 01

Error code 01 on an LG refrigerator indicates an ice maker sensor error. The control board has detected a problem with the temperature sensor circuit in the ice maker, which could be caused by a loose connector, damaged wiring, a short circuit, or a failed sensor. The refrigerator's cooling system typically continues to operate, but ice production may be affected.

Error code 01 does not typically represent a safety hazard. It is an electrical signal fault in the ice maker sensor circuit and does not involve high-voltage components or refrigerant release under normal circumstances. However, a short circuit in the wiring should be investigated promptly to prevent potential damage to the main PCB or other components.

A reset, such as unplugging the refrigerator for several minutes, may temporarily clear error code 01, but the code will return if the underlying fault in the sensor circuit has not been resolved. A reset is a useful first step to rule out a transient glitch, but a persistent code 01 requires physical inspection of the connector, wiring, and sensor to find and correct the actual cause.

Some causes of error code 01 are within reach for a confident DIYer, such as reseating a loose connector or inspecting visible wiring for obvious damage. More advanced steps, like measuring voltage at CN90 on the main PCB or testing thermistor resistance, require a multimeter and basic electrical knowledge. If the wiring harness or the sensor itself needs replacement, those repairs involve working near refrigerant lines and the ice maker assembly, which may be better handled by a qualified technician.

Repair costs depend on the specific cause. If only a connector needs reseating or a wiring harness needs minor repair, costs may be minimal, primarily covering a service call ranging from $75 to $150. Replacing the ice maker thermistor typically costs between $20 and $60 for the part, plus labor. If the wiring harness requires full replacement, total repair costs can range from $100 to $300 depending on parts and local labor rates.