LG Refrigerator Er CO Error Code — Meaning & Causes (2026)
Communication error (board ↔ display). Below: what triggers it and what to check — this code carries no single repair to price. Reviewed July 2026.
What Er CO means
Communication error (board ↔ display).
Likely causes, most common first
- A loose harness/connector or a board fault
Base: ApplianceRepairService.ca fault-code library · Code meaning & causes · Reviewed July 2026
No single repair to price for this code
Er CO doesn't point at one failed component, so we don't attach a price module — forcing a repair mapping here would be dishonest. If the code keeps returning, the underlying symptom (not the code) is what gets priced: browse the refrigerator repair costs for the problem you're actually seeing.
Codes are universal — your location changes the repair price, never the code's meaning. See the methodology for the exact localization formula and sources.
Reviewed by a Red-Seal certified appliance technician.