LG Refrigerator CO Error Code

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What it means

The refrigerator detected a communication error between the control board and display.

Try this first

Unplug the refrigerator.
Wait several minutes.
Restore power.
Check whether the display returns to normal.

Can I keep using it?⚠ Monitor refrigerator operation

Repair usually required?🔴 Service may be required

If the error keeps returning

If CO returns after power is reset, LG recommends repair service.

Official source

Troubleshooting information verified against manufacturer support documentation.

View manufacturer support page →

Safety note:ApplianceSignal provides general troubleshooting information. Always follow the appliance manufacturer's safety instructions and disconnect power when required.

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LG Refrigerator CO: Quick Answer

What it means: The refrigerator detected a communication error between the control board and display.

First thing to check

Unplug the refrigerator.

Can I keep using it?

Monitor refrigerator operation

Repair outlook

Service may be required

If the code remains

If CO returns after power is reset, LG recommends repair service.

Model note: Error-code meanings and procedures can vary by model and model year. Confirm the code against the documentation for your exact appliance before replacing parts.

Manufacturer reference: lg.com