# LG refrigerator error code CO — a communication error between the main board and the display.

For LG refrigerator error code CO, meaning is a communication error between the main board and the display, verified against its source on 2026-10-08.

- **Brand:** LG _(verified: appears in its own passage below)_
- **Appliance type:** refrigerator _(verified: appears in its own passage below)_
- **Error code:** CO _(verified: appears in the quote below)_
- **Meaning:** a communication error between the main board and the display. _(verified: appears in the quote below)_

## What the source says

> The CO code indicates a communication error between the main board and the display.

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Brand

> [LG Refrigerator] Digital and Analog Error Codes | LG USA Support

### Appliance type

> LG Refrigerator Error Codes

## Source

- https://www.lg.com/us/support/help-library/lg-refrigerator-digital-and-analog-error-codes--20154835849096

Last verified: 2026-10-08. Review by: 2027-10-08.
Part of [Appliance fault and error codes](https://referencesource.org/appliance-fault-error-codes/).