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Er COC1Quick answer
On LG refrigerators, error code CO means: Communication error between control boards. The fridge may not cool properly. Keep the doors closed, try the steps below and call service if the code returns.
Is my food safe? Can I keep using the fridge?
Severity: Medium
The fridge may not cool properly. Keep the doors closed, try the steps below and call service if the code returns.
Common causes
- Unstable mains power or a loose plug/socket
- Damaged wiring or a loose/corroded connector
- Faulty control or motor board
How to fix it
- Unplug the fridge for about 1 minute, then plug it into a wall socket (no power strip)
- Keep the doors closed to protect food and contact authorised service if the code returns
Frequently asked questions
What does LG error CO mean?
On LG refrigerators, error code CO means: Communication error between control boards.
How do I fix LG error CO?
Start with these steps: Unplug the fridge for about 1 minute, then plug it into a wall socket (no power strip); Keep the doors closed to protect food and contact authorised service if the code returns.
Can I keep using the fridge with error CO?
Severity: Medium. The fridge may not cool properly. Keep the doors closed, try the steps below and call service if the code returns.
LG refrigerator error codes
FFFreezer fan faultrFFridge compartment fan faultCFCondenser fan faultdHDefrost system faultFSTemperature sensor (thermistor) faultrSTemperature sensor (thermistor) faultdSDefrost system faultIFIce maker faultCHRefrigerant shortage or leak