LG Refrigerator Error Code 25

Error code 25 on an LG refrigerator indicates a UART communication error with the PLC modem, which is a module that communicates data over the home's electrical wiring. This modem is an optional feature and is not installed on all LG refrigerator models. If your model does not include a PLC modem, this code is not a defect and the refrigerator is functioning normally. If the modem is present, there may be a wiring, modem, or control board issue to investigate.

A power reset may temporarily clear error code 25, but the code will return if the underlying communication issue is not resolved. On models without a PLC modem installed, the code may reappear after reset as a persistent non-defect display. On equipped models, clearing the code permanently requires addressing the root cause, such as reseating the harness or replacing the faulty modem.

If the refrigerator does not have a PLC modem, no repair is needed and there is no cost involved. For models with the modem installed, costs depend on the faulty component. PLC modem replacement parts typically range from $50 to $150, while main control board replacement can range from $100 to $300 or more, not including labor fees if a technician is hired.

Yes, in most cases the refrigerator will continue to cool normally when error code 25 is displayed. The PLC modem is related to communication functions, not the core cooling system. If the error appears on a model without a PLC modem, there is no functional impact at all.

Error code 25 does not indicate a safety hazard. It is a communication error related to an optional networking module and does not affect the electrical safety or structural integrity of the refrigerator. If the code appears without a PLC modem being installed, it can be disregarded entirely.