Quick answer
Airflow restriction codes usually point to a shared symptom category, not one guaranteed failed part. Start with visible conditions, then use the matching brand code page below.
What this problem type covers
This hub groups matching appliance code pages for Dryer. Covered brands include LG. It is useful when searches mention a symptom, such as drain code, fill error, leak warning, or airflow restriction.
Exact steps still depend on brand and model number. Use the code page for the display text on your appliance before opening panels or ordering parts.
Common causes
- Lint screen or exhaust duct is restricted
- Exterior vent flap is blocked or stuck
- Long, crushed, or kinked dryer duct
- Moisture sensor or airflow sensor reading outside expected range
Safe first checks
- Clean the lint screen and the lint screen housing.
- Check the outside vent while the dryer runs; airflow should be strong.
- Disconnect power before inspecting a duct connection behind the dryer.
- Remove crushed foil ducting if present and replace it with rigid or semi-rigid metal ducting where allowed by local code.
- Move to the exact brand code page if the same warning returns.
Stop troubleshooting when
- The code returns after the vent path is verified clear.
- The dryer smells hot, trips a breaker, or shuts off repeatedly.
- The unit is stacked or hard to move safely.