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LG Dryer D80 Error Code: Meaning and Fix
D80 is not a random fault. It is your LG dryer telling you its exhaust is restricted. Here is what it means, how to fix it and why not to bypass it.
Last reviewed October 1, 2026. Written and reviewed by the Plano Dryer Pros team. How we create content
D80 on an LG dryer is a Flow Sense warning that the exhaust airflow is restricted, often described as about an 80 percent blockage. D90 and D95 mean a heavier restriction. The fix is to clear the vent: the lint screen, the duct behind the dryer, the wall duct and the outside hood. Do not bypass the code.
Key takeaways
- D80, D90 and D95 are Flow Sense airflow warnings, from LG dryers that watch their own exhaust.
- The cause is almost always a restricted vent, not a faulty dryer.
- Clear the lint screen, the duct behind the dryer, the wall duct and the outside hood.
- Do not bypass the code: if it returns after a clear vent, have the dryer checked.
What D80 means
Many LG dryers use a Flow Sense system that measures how freely air leaves the dryer. When the exhaust is restricted, the display shows a code. Repair and parts sources describe D80 as roughly an 80 percent restriction, D90 as about 90 percent and D95 as about 95 percent, at which point the dryer may cool down and stop. Check your manual for the exact behavior of your model.
| Code | What it points to | What to do |
|---|---|---|
| D80 | A significant exhaust restriction | Clear the vent soon, and avoid heavy loads until you do |
| D90 | A heavier restriction | Stop and clear the whole vent run |
| D95 | A severe restriction, and the dryer may stop | Do not use the dryer until the vent is clear |
What does D80 mean on an LG dryer?
D80 is a Flow Sense warning that the exhaust airflow is restricted, often described as about an 80 percent blockage. It points to the vent: the lint screen, the duct behind the dryer, the wall duct or the outside hood.
How to fix a D80 code
- Clean the lint screen, wash it with soap and water, and let it dry.
- Run the dryer empty on high for ten minutes and feel the air at the outside hood: it should be strong and warm.
- Pull the dryer out carefully, and check the flexible duct behind it for crushing, kinks and loose joints.
- Disconnect the duct, and clear the lint from the duct and the dryer’s outlet with a brush kit and vacuum.
- Clear the outside hood and check that the flap opens wide, with no screen, nest or damage.
- Reconnect the duct with foil tape or clamps, and run the dryer again.
How do I fix a D80 error on an LG dryer?
Clean and wash the lint screen, then run the dryer empty and feel the air at the outside hood. Check the flex duct behind the dryer for crushing, clear the duct and the dryer outlet with a brush kit and vacuum, and clear the outside hood. Reconnect the duct securely and run the dryer again.
Why D80 can return
| Why it returns | What to check |
|---|---|
| A crushed or kinked flex duct behind the dryer | Pull the dryer out and straighten or replace the duct |
| A long run or many bends | Check the length against the manual: vent length and bends |
| A blocked hood, a screen or a stuck flap | Clear it, and replace the hood if needed |
| Lint deeper in the run, or inside the dryer | Have the full run cleared, and the dryer’s own ducting checked |
| A sensor that is reading wrongly | Have the dryer tested if the vent is verified clear |
Why does D80 come back after I cleaned the vent?
The restriction may be deeper in the run, in a crushed duct or at the hood, or lint may be inside the dryer’s own ducting or blower area. Check the flex duct, the wall duct and the hood, and measure the airflow.
Should you bypass the code?
No. Bypassing hides a real restriction. The dryer runs hotter, the heat parts wear faster and the fire risk rises, because lint is fuel. See the NFPA fire data. The vent is the real fix, and the code is a free warning.
Can I reset or bypass D80?
Resetting alone does not last, because the dryer rechecks the airflow every cycle, so the code returns while the restriction remains. Bypassing the code hides a real restriction and raises the fire risk. Clear the vent instead, and if the code persists after a verified clear vent, have the dryer and its sensor checked.
When to call a professional
Call if the run is long, goes through an attic or roof, has many bends, is behind a stacked unit, or the code returns after you clear it. A vent clearing typically costs about $100 to $200 in Plano, and the price is put in writing before any work starts. See dryer vent cleaning in Plano and LG dryer repair in Plano.
Sources
- PartSelect: LG dryer codes D80, D90 and D95
- Fred’s Appliance Academy: fixing LG dryer error codes D80, D90 and D95
- Your dryer’s installation and service manual, which governs over any general guidance on this page
- Plano Dryer Pros estimates of typical local repair pricing, checked against national consumer cost guides for context. See our Editorial Policy.
Frequently asked questions
Is it safe to keep using an LG dryer with a D80 code?
The dryer may keep running at D80, but the restriction raises the heat and the fire risk, so clear the vent soon and avoid heavy loads. At D95 the dryer may stop, and you should not use it until the vent is clear.
What is the difference between D80, D90 and D95?
They show increasing levels of exhaust restriction, roughly 80, 90 and 95 percent according to repair and parts sources. The fix is the same, clear the vent, but the higher codes are more urgent.
Does D80 mean my LG dryer is broken?
Usually not. It means the dryer is detecting restricted airflow in the vent, which is a house problem more often than a dryer fault. If the vent is verified clear and the code persists, the sensor or the dryer’s internal ducting may need checking.
Do other dryer brands have this code?
The D80, D90 and D95 codes are LG Flow Sense codes. Other brands use different codes or none, and the cause is often the same: a restricted vent. Check your manual for your brand.
How much does it cost to fix D80?
Clearing a reachable vent typically costs about $100 to $200 in the Plano area, and more for a long or roof run. That is an estimate, not a quote, and the exact price is in writing before any work starts.
Get your dryer working again
Call and a person will answer, or request a repair online. You get the full price in writing before any work starts.