LG dryer error codes: nine times in ten it is the vent.

The dryer measured the exhaust air and found it backing up. The duct between the dryer and the outside is most of the way blocked.

1. Pull the lint filter and wash it in warm soapy water — dryer sheets leave a film that holds air back even on a filter that looks clean. Dry it before it goes back.
2. Pull the dryer out and look at the duct behind it: a crushed or kinked flexible duct, or a run of foil duct packed with lint. Take it off the dryer and look inside both ends.
3. Go outside while the dryer runs on Air Dry and hold a hand at the vent hood — strong, warm air is good; a trickle means the run or the hood is clogged. A hood flap stuck shut, a bird's nest or a screen over the hood stops it cold.
4. Count the length and the bends: every 90° elbow counts as 5 feet, a 45° as 2.5 feet, and the whole run should not pass 35 feet. A long run with four elbows clogs every few months.

Clean the duct end to end (a vent brush kit on a drill does it from inside), replace crushed foil duct with rigid or semi-rigid metal, free the hood flap, then reset and run a Time Dry — the code clears on a clean run. A dryer that prints d80 on a short, clean metal duct has a blocked blower housing inside — a service call.

The same airflow fault one step worse — the exhaust is almost fully backed up, and clothes come out damp after a full cycle.

1. The lint filter, washed and dried.
2. The duct behind the dryer, off the dryer and looked into at both ends.
3. The outside hood with the dryer running — a trickle of air means a clogged run.

Clean the whole run and the hood, replace crushed foil duct with metal, reset and run a Time Dry. Keep using the dryer only after the vent is clear — a blocked vent is a lint fire waiting.

Nearly no air is leaving the dryer. The dryer will run long, dry little and run hot.

1. Stop and clean the vent before the next load — the lint filter, the duct behind the dryer, the whole run to the hood, the hood itself.
2. Look for the usual culprit: a flexible duct crushed flat behind a dryer pushed hard against the wall, or a hood flap frozen or painted shut.

A d95 that stays after the whole run is clean and metal is a blockage inside the dryer's own blower housing or exhaust — a service call. Do not run it on a blocked vent.

The no-display version of d80 / d90 / d95. The Flow Sense bars on the panel light as the vent clogs — one bar is a warning, every bar is a vent that is nearly shut.

1. The lint filter, washed and dried.
2. The duct behind the dryer and the outside hood, with the dryer running.

Clean the run and the hood; the bars go dark on the next clean run. Every bar lit on a clean metal duct is a blockage inside the dryer — a service call.