ERROR CODE EXPLAINED
LG Dryer
LG Dryer d90 Error Code
What it means
d90 indicates that the dryer exhaust duct is about 90% restricted.
Try this first
- Clean lint from the lint filter and inspect the rear exhaust connection.
- Check the full exhaust duct for crushing, kinks, damage, excessive turns, or lint buildup.
- Check the exterior exhaust hood for strong airflow while the dryer runs.
- If the restriction cannot be cleared, have the home vent system professionally cleaned.
Can I keep using it?Follow the manufacturer checks that match the condition shown by the appliance; model-specific details can vary.
Repair usually required?If the manufacturer directs the issue to service or the listed checks do not clear it, arrange professional appliance service.
If the error keeps returning
Use the linked official manufacturer support article for the exact source guidance and model-specific details.
Official source
Troubleshooting information verified against manufacturer support documentation.
View manufacturer support page →Safety note:ApplianceSignal provides general troubleshooting information. Always follow the appliance manufacturer's safety instructions and disconnect power when required.