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LG Dryer Error Code d90
Restricted airflow (Flow Sense). d80, d90 and d95 mean LG's Flow Sense detected a blocked exhaust duct, about 80, 90 or 95 percent restricted. LG warns that using a dryer with a severely restricted exhaust may be unsafe. On gas dryers, d80 can also mean a lack of gas supply.
- Code: d90 (also shown as d80, d95, d75)
- Appliance: LG dryer
- Owner fix: Often fixable with the safe checks on this page. Call a pro if the code comes back.
- Repair cost: call for a quote
- Checked against the manufacturer sources below on October 27, 2026
Likely causes
- Lint buildup in the duct or outside hood
- Crushed, kinked or coiled flexible duct behind the dryer
- Outside vent flaps stuck shut with lint
- Duct run too long or with too many bends
Safe checks you can do
Safety: Unplug the dryer before moving it or cleaning the duct. On a gas dryer, do not disconnect or work on the gas line, valve or burner. If you smell gas, leave the house and call your gas company from outside.
- Clean the lint filter between every load.
- Unplug the dryer, pull it out, and straighten or replace crushed duct; make sure it is not coiled like a spring.
- Run Air Dry and check outside that the vent flaps open fully with strong airflow.
- Remove lint around the outside hood.
When to call a pro
- The code stays after cleaning (have the duct inside the walls professionally cleaned)
- Clothes take more than one cycle to dry
- Gas dryer showing d80 with no heat (do not work on gas parts yourself)
- Any time you smell burning or gas, see sparks, or would need to open a panel
What does it cost to fix?
Call for a quote. Repair costs depend on the brand, the model, the part and the shop, so this site does not publish price ranges. Ask each shop for its diagnostic or trip fee and a written quote after diagnosis. See what affects repair cost.
Sources
Codes and steps vary by model. Your owner's manual and the model sticker inside the door or on the back are the final word for your exact unit.
Other LG dryer codes
Dryer codes from other brands
See also: Dryer help in Idaho · Dryer not heating · Dryer taking too long · All error codes
FAQ
What does LG error code d90 mean?
Restricted airflow (Flow Sense). d80, d90 and d95 mean LG's Flow Sense detected a blocked exhaust duct, about 80, 90 or 95 percent restricted. LG warns that using a dryer with a severely restricted exhaust may be unsafe. On gas dryers, d80 can also mean a lack of gas supply.
Can I fix LG code d90 myself?
Often fixable with the safe checks on this page. Call a pro if the code comes back. Unplug the dryer before moving it or cleaning the duct. On a gas dryer, do not disconnect or work on the gas line, valve or burner. If you smell gas, leave the house and call your gas company from outside.
How much does it cost to fix LG code d90?
Call for a quote. Repair costs depend on the brand, the model, the part and the shop, so this site does not publish price ranges. Ask each shop for its diagnostic or trip fee and a written quote after diagnosis.
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