Editorial & technical review
- Written by ApplianceWorth Editorial Team
- Technically reviewed by Victor — appliance technician
- Last reviewed 2026-07-01
- Applies to LG refrigerators
- Confidence medium
- Also displayed as EFF, ERFF
- Sources Manufacturer service documentation and field-repair experience · Methodology · Report a correction
What this code means
The main control has lost the expected feedback signal from the freezer evaporator fan. The fan may be failed, but frost or a defrost/air-leak problem can also stall it.
Most likely causes
- Heavy frost or ice is blocking the freezer fan
- The evaporator fan motor is seized or electrically failed
- A defrost failure or door-sealing problem caused the ice buildup
- A wiring connection or control-board issue interrupted fan feedback
Safe checks for the owner
- Check whether freezer temperature is rising and protect food as needed.
- Listen for scraping, buzzing or an absent fan sound after the door switch is activated.
- Inspect accessible door gaskets and confirm the doors close fully.
Estimated U.S. repair cost
$280–$580, depending on model, access, parts availability and local labor.