LG Refrigerator — Error Code CO

Q: How do I fix the CO error on a LG refrigerator?

Try first: Request professional service. LG publishes no user troubleshooting for this board communication fault; request repair service.

A communication fault occurred between the main board and the display.

brand LG appliance Refrigerator market US component control board category communication severity degraded

Ranked repair steps

1. Request professional service

LG publishes no user troubleshooting for this board communication fault; request repair service.

professional only · basis: manufacturer first

Educational reference, not a substitute for the manufacturer's service manual. Disconnect power and water before servicing; gas, sealed-refrigerant, and high-voltage work is for qualified technicians only.

Provenance: facts re-derived from an official manufacturer listing — LG USA Support — Refrigerator Error Code List. Meanings and steps are original paraphrase; nothing is reproduced verbatim.

Need this as data? This page renders one row of the ApplianceDB dataset — 438 codes, ranked fixes, OEM parts with observed costs, per-row provenance. Get the free sample →