LG Dryer d80 error code
Flow Sense detected that your exhaust ductwork is about 80% blocked. Hot, moist air cannot escape properly, so clothes take longer to dry and the dryer uses more energy.
Also shown as: d80, D80
Last updated: October 6, 2026
What causes the d80 error?
- Lint buildup inside the ductwork
- Duct run is too long or has too many bends
- Crushed or kinked flexible vent hose
- Blocked outside vent cap
- Lint filter not cleaned properly
How to fix LG d80 — step by step
Work through these in order, from simplest and safest first. Stop as soon as the code clears.
- Clean the lint filter
Pull out the lint filter and remove all lint. Wash it occasionally with soap and water, since fabric softener leaves an invisible film that blocks airflow. - Check airflow at the outside vent
While the dryer is running, go outside and feel the vent. You should feel strong, warm airflow. Weak flow confirms a blockage somewhere in the duct. - Inspect the duct behind the dryer
Pull the dryer out carefully and check the vent hose for crushing, kinks, or disconnection. Straighten it or replace a damaged section.Safety warning: Unplug the dryer before moving it or touching the duct. - Clean the full duct run
Use a dryer vent brush kit from inside and outside, or hire a duct cleaning service. The code can stay on for a few cycles after cleaning before Flow Sense rechecks.Safety warning: A badly restricted vent is a fire risk. Do not ignore a persistent Flow Sense warning.
When to call a technician
- The indicator stays on after 5 or more cycles since cleaning
- There is almost no airflow at the outside vent
- You smell burning or see scorch marks
- The duct run is long or hidden inside walls
Frequently asked questions
Can I still use my dryer with d80?
Yes, but drying takes longer and uses more energy. Clean the vent soon, since restricted airflow is a fire risk over time.
Is d80 covered by the dryer warranty?
No. LG treats Flow Sense warnings as a house venting issue, not a dryer failure, so it is not covered.
Why is the code still there after I cleaned the vent?
Flow Sense needs several consecutive good cycles to confirm the improvement before the indicator resets.
Sources
Every meaning and fix above was checked against official manufacturer documentation:
FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.