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LG Dryer d80 Error Code

Exhaust vent is restricted (Flow Sense). Here is what it means and how to clear it, easiest fix first.

d80
Moderate DIY

LG's Flow Sense system has measured poor airflow out of the dryer, and the number is roughly how blocked the exhaust path is: d75, d80, d90 or d95. The usual causes are a full lint screen, lint packed in the duct, a crushed or kinked hose behind the dryer, a stuck outside vent flap, or a duct run that is too long or has too many elbows. A blocked vent makes drying slow and lets lint and heat build up, which is a real fire risk, so treat this code promptly.

Also shown as d75, d90 or d95 (higher numbers mean a worse blockage), or as two or four bars on the Flow Sense indicator. At d80 the dryer can usually still be used, but at d90 and above it may shut down. LG's support pages also list E1 and E4 with this airflow group on some models; check your manual. On gas models LG says d80 can also mean no gas is reaching the dryer; see the gAS entry and do not touch the gas line yourself. The code may not clear until the dryer completes a cycle with good airflow.

Safety first: unplug the dryer (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix LG d80

  1. Clean the lint screen

    Pull the lint screen and remove all lint. If it looks clogged or waxy from dryer sheets, wash it in warm water with a soft brush and let it dry completely before putting it back. Clean it before every load from now on and avoid packing the drum too full.

  2. Check the hose behind the dryer

    Unplug the dryer (on a gas dryer, unplug it but do not touch the gas line or valve). Pull it out gently and look at the exhaust hose for crushing, kinks, holes or loose joints. A gentle S-bend is fine, but a hose squashed against the wall or coiled up is not. Replace plastic or thin foil hose with rigid or semi-rigid metal duct, usually 4 in (10 cm) across.

  3. Check the outside vent

    Go outside and find the vent hood. Clear any lint around it and make sure the flaps open freely; running an Air Dry cycle (no heat) lets you watch them open. Remove any screen over the outlet, because screens trap lint.

  4. Get the ductwork inside the wall cleaned

    If the code keeps coming back, hire a dryer vent cleaning service to clear the duct inside the walls or roof. Have them measure the full run and count the 90-degree elbows, then compare those figures with the limits in your owner's manual; a run that is too long may need rerouting.

When to call a technician

If the duct is clean and within the manual's length limits and the code still appears, the dryer's sensors or controls may be faulty and need a technician. On a gas dryer, if you ever smell gas, leave the home and call your gas company from outside.

Parts that commonly cause d80

Order parts by your exact model number so they fit.

Other LG dryer codes

Frequently asked questions

What does d80 mean on a LG dryer?

LG's Flow Sense system has measured poor airflow out of the dryer, and the number is roughly how blocked the exhaust path is: d75, d80, d90 or d95. The usual causes are a full lint screen, lint packed in the duct, a crushed or kinked hose behind the dryer, a stuck outside vent flap, or a duct run that is too long or has too many elbows. A blocked vent makes drying slow and lets lint and heat build up, which is a real fire risk, so treat this code promptly.

Can I fix LG d80 myself?

Often. The first steps above are safe checks a homeowner can do. If they don't clear d80, the cause is likely a worn part that needs replacing.

What if d80 keeps coming back?

A code that returns after a reset and the checks above usually means a part is wearing out. Note when d80 appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.

References