LG dryer d80 error code
- Dryer
LG dryer d80 (Flow Sense) means the exhaust path is roughly 80% restricted — clothes take too long to dry and the dryer may stop heating to protect itself. On DLEX3900-class dryers, clean the lint screen first, then the entire rigid or flex vent to the outside. d80 often appears before d90/d95 on the same unresolved blockage.
Reviewed August 2025 · sources below
Safe to keep using?
No safety issue
This is a status or lock code, not a hardware fault.
How to fix d80
- Clean the lint filter and vacuum the filter slot.
- Pull the dryer out and inspect the 4-inch vent hose for kinks or crushing.
- Check the exterior hood — the damper should swing freely.
- Run a timed dry and confirm strong airflow at the outside vent.
- If d80 returns immediately with clear airflow, the pressure sensor may need service — rare compared to vent blockages.
Call a pro when: Call a vent cleaning service for long roof runs or if lint blows back into the laundry room after cleaning.
Next step
Still having trouble after the code fix?
This code is usually a status or maintenance notice, not proof of a failed part. Try the steps above first; then describe what still isn't working.
Free guided checks · No account required · Don’t open live electrical, gas, or refrigerant equipment
What d80 means
Exhaust duct is about 80% restricted — clothes take too long to dry.
Likely causes
Lint builds up in the filter, hose, or outdoor vent and trips Flow Sense.
Check: Clean the lint filter, then check the rear hose and outdoor vent flap for lint or a crushed duct.
Est. cost: $0–$0
Too many elbows or a crushed flex hose chokes airflow even after you clean lint.
Check: Run the dryer and confirm air is blowing outside. Shorten or replace crushed duct.
Est. cost: $0–$40
Guided repair checklist
Complete the safe checks one at a time. Progress is saved for this browser so you can continue later.
0 of 5 checks recorded
Recommended next action
Start with this check before considering replacement parts.
Check 1 of 5
Clean the lint filter and vacuum the filter slot.
Did the repair resolve the issue?
Restoring repair progress…
Questions about d80
What does d80 mean on LG dryer?
d80 indicates about 80% vent restriction detected by Flow Sense.
Is d80 a fire risk?
Restricted vents are a fire hazard — clean the full vent run promptly.
Do I need parts for d80?
Usually no — vent cleaning fixes most d80 codes.
How is d80 different from d90?
Higher numbers mean worse blockage — d90/d95 follow if the vent stays clogged.
LG d80 on specific models
Other LG Dryer codes
Prevent this problem next time
- Clean the lint filter before every load
- Have the vent professionally cleaned about once a year
Sources
Manufacturer meaning
The exhaust duct is about 80% restricted — the dryer cannot vent hot air.
FixApplianceCode guidance
Clean the lint filter and exhaust vent. Do not order a part until airflow is restored.
Source type: Manufacturer
Source: LG dryer Flow Sense / vent documentation
Last reviewed: 2026-08-24
Repair guidance is for informational purposes only. We do not guarantee that any fix will resolve your issue, and you assume all risk when following these steps. Terms & disclaimer
As an Amazon Associate I earn from qualifying purchases. Some links may also earn other retailer commissions, at no additional cost to you. Affiliate disclosure