Sb can mean sabbath mode setting / display in the official LG refrigerator guidance linked below. The same display may mean something different on another model, so check the full model number and the context in which it appeared.
This may be a status, not a malfunction
Confirm the display context in your exact model manual before treating it as a repair code.
Read the display exactly
Recorded display variants in this source group: Sb, S6, 5b, 56. Keep capitalization, spaces, and any slash or suffix in your notes. These are documented variants within this group, not proof that every version appears on every model.
Product scope: any. When it appears: Consult the owner manual for the display context and control-panel generation.
Safe checks before service
- Check the owner manual to confirm whether this is an operating mode rather than a fault.
- Change a setting only by the documented model-specific procedure.
- If the refrigerator is not cooling, protect perishable food and contact service.
Do only user-facing checks allowed by your owner manual. Do not bypass locks, open electrical compartments, work on gas lines, or cut into the refrigerant system.
Food safety comes first
If cooling is affected, check actual food temperature with an appliance thermometer and use the FoodSafety.gov guidance.
Read food temperature guidance
When to stop checking
If the code remains after safe external checks, contact the manufacturer or a qualified technician. If a hazard is present, stop use first. Keep the displayed code and context available for support.
Use the DIY or service decision guide · Find manufacturer service · Prepare a service checklist
Official source and model check
Source scope: manufacturer category general. Reviewed 2026-11-02. This page does not establish that the code applies to a specific model. Find the full model and suffix on its label, then read that model’s official manual.