How to Fix LG Dryer Error d90

Written by

⚠️ Safety Warning: Appliance repair involves electricity, gas, and moving parts. Always disconnect power before working on any appliance.

Error Code: Dryer Difficulty: Easy

Problem: Air exhaust system is 90% clogged. The dryer has detected a critical restriction in the external ductwork and may shut down.

⚖️ Repair Decision

⚠️ CHECK WARRANTY / AGE

no_parts

How to Fix Dryer Error

Disconnect the flexible vent hose from the back of the dryer.
Clean the internal lint filter and the housing it slides into.
Clean the flexible vent hose and the wall duct leading outside.
Check the exterior vent hood on the outside of the house for crushed louvers or bird nests.
Reconnect the vent and run a cycle to clear the code.

If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.

Get the ‘Secret Service Mode’ Cheat Sheet for your LG model. Includes an easy-to-read list of every error code and quick diagnostic tips.

✅ Join 15,000+ DIYers • Instant PDF Download

Appliance Type

Appliance Age

Estimated repair cost (parts, or parts + labor) Most DIY parts are $50–$250. If you have a quote, use the total.

Is it under warranty?

More options (for a better recommendation)

Brand

Your DIY Skill Level

EPA Section 608 Certified Technician with 18+ years experience.

Browse all Lg error codes: Lg Error Codes