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Source-backed error-code guide

Reviewed

LG Washer Sud Error Code

Sud means the washer detected too many suds. LG says the washer may add a suds-reduction cycle or pause during spinning to help prevent leaking; this response does not prove a component is broken.

Applies to LG front-load washers

What the washer detected

Detected condition

The washer detected excessive suds.

What may contribute

Possible causes

  • More detergent than the detergent manufacturer recommends.
  • Detergent use that does not follow LG guidance to use high-efficiency detergent with the washer.
  • Pod quantity or placement that does not follow the documented instructions for the washer.

Start conservatively

Safe preliminary checks

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

  1. Record the message and model number

    • Photograph or write down Sud before changing detergent use or restarting the washer.
    • Confirm the full model number so detergent and dispenser guidance can be checked against the correct owner documentation.

  2. Recognize the documented suds response

    • LG says the washer may add a suds-reduction cycle and may stop if excessive suds are detected during spinning.
    • The cited LG reference says the suds-reduction cycle adds about 2 hours. Treat that timing as specific to the referenced guidance and confirm behavior in the documentation for the exact model.

  3. Correct detergent type and amount

    • Use high-efficiency detergent and do not add more than the detergent manufacturer recommends.
    • Reduce the detergent amount for later loads until there is no more excessive sudsing, while staying within the detergent and washer instructions.

  4. Follow the documented pod placement

    • If using a pod, place one pod directly in the washer drum before loading laundry.
    • Do not use more than one pod per load, and do not place a pod in the dispenser drawer.

Actions not recommended

  • Do not add more detergent while resolving an excessive-suds condition.
  • Do not add chemical additives or improvised cleaning substances to clear Sud.
  • Do not remove panels or treat Sud as proof that a pump, sensor, or another component has failed.

When to stop and request service

  • Sud continues to return after detergent type, amount, and pod placement match the instructions for the washer and detergent.
  • The washer cannot complete its documented suds response or supported cycle.
  • The condition persists and requires inspection beyond the detergent checks in the LG guidance.

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: August 12, 2026.

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