LG Dryer — Error Code D90

Q: How do I fix the D90 error on a LG dryer?

Try first: Clear the exhaust duct. Check for lint buildup at the rear exhaust duct and inspect the full run for crushed or kinked sections; use a professional vent-cleaning service for blockages inside walls.

Airflow through the exhaust duct is restricted by roughly ninety percent.

brand LG appliance Dryer market US component exhaust duct category ventilation severity degraded

Ranked repair steps

1. Clear the exhaust duct

Check for lint buildup at the rear exhaust duct and inspect the full run for crushed or kinked sections; use a professional vent-cleaning service for blockages inside walls.

moderate · basis: manufacturer first

Educational reference, not a substitute for the manufacturer's service manual. Disconnect power and water before servicing; gas, sealed-refrigerant, and high-voltage work is for qualified technicians only.

Provenance: facts re-derived from an official manufacturer listing — LG USA Support — Dryer Error Code List. Meanings and steps are original paraphrase; nothing is reproduced verbatim.

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