Match the symptom, then work through the safe checks.
1. What best matches what you observe?
2. Complete only the checks that are safe for you.
Show stop conditions
- Foam or water leaks out
- Pump sounds strained
- Code returns during an empty rinse
Likely causes
- Too much detergent was used
- Detergent is not suitable for high-efficiency machines
- Soft water requires a lower dose
- Slow draining retains foam
Quick checks, in order
Allow foam to settle
Do not add more chemicals.
Run a rinse or drain cycle
Use no additional detergent.
Correct detergent type and dose
Use the manufacturer-required detergent and amount.
Check draining if it returns
A restriction can retain detergent.
What happens when Sud appears?
Detergent type or dose is the first issue.
Residue, draining, or pressure sensing may still be involved.
The appliance may be pausing to remove foam.
Stop and get qualified help when
- Foam or water leaks out
- Pump sounds strained
- Code returns during an empty rinse
Official support and model manuals
Use the full model number from the rating label. The manufacturer manual is the deciding reference when codes differ by region or product family.
Frequently asked questions
What does Sud mean on a LG washer?
On many model families, Sud indicates that excess detergent suds were detected. Confirm the exact model and region because the same display can be used differently.
Can I clear Sud by unplugging the washer?
A short power reset may clear a temporary state, but it will not fix a blocked hose, leak, failed sensor, motor, heater, or wiring fault. Stop if the code returns.
Should I replace a part based only on the code?
No. A code identifies a system or condition, not always the failed component. Complete safe external checks and use the model-specific manual or qualified service.