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Source-backed error-code guide

Reviewed

LG Range Sb Error Code

Sb/5b is a mode indicator rather than a fault. If the mode was enabled unintentionally, use the documented control sequence for the exact model instead of resetting or replacing parts.

Applies to LG range or oven

What the appliance detected

Detected condition

LG says Sb indicates Sabbath Mode and is not an error code.

What may contribute

Possible causes

  • Sabbath Mode was intentionally enabled.
  • Sabbath Mode was enabled unintentionally through the control sequence.
  • The display characters are being read as 5b instead of Sb.

Start conservatively

Safe preliminary checks

Work in order and stop whenever a step is not supported by the documentation for your model.

  1. Confirm the display and model

    • Compare the display with Sb/5b and record the full model number before changing settings.
    • Check the model owner manual for its Sabbath Mode controls because key names and sequences can vary.

  2. Understand what Sabbath Mode changes

    • LG notes that while Sabbath Mode is active, temperature changes and certain timer, light, and alarm functions are restricted.
    • Do not assume a quiet display, unchanged light, or limited controls means the oven has failed.

  3. Exit the mode through supported controls

    • For models matching LG’s published sequence, press Bake, set a bake temperature, press Start, then press and hold Clock for three seconds.
    • If that sequence does not match the model manual or Sb remains, stop and use the exact model instructions or request support.

Actions not recommended

  • Do not open service panels or replace controls because Sb/5b is displayed.
  • Do not force random button combinations when the exact model manual gives a different Sabbath Mode procedure.
  • Do not disable safety devices or disconnect internal wiring to exit a user mode.

When to stop and request service

  • Use the exact LG owner manual if the documented button sequence differs on your model.
  • Request LG support or appliance service if the unit remains stuck in Sabbath Mode after the correct model-specific procedure.
  • Treat any separate overheating, smoke, sparking, or burning odor as an unrelated safety issue and stop using the appliance.

Documented source

Official information reviewed

Our summary is based on manufacturer support material and stays within the limits of that material.

Source reviewed by Appliance Help HQ: September 23, 2026.

Appliance Help HQ is an independent informational site and is not affiliated with or endorsed by LG.

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