RRepairGraph
LG · Dryer · D90

If the code returns

The dryer detected an exhaust restriction of about 90 percent.

Diagnostic nodeD90RECURRING-CODE
!
Use this as a diagnostic branchConfirm the exact model manual before ordering parts or opening the appliance.

Coverage: LG dryers equipped with the Flow Sense duct-blockage system.

GUIDANCE

If the code returns for error D90

If D90 returns after an accessible check, do not keep resetting the appliance. Record when it appears, stop at any unsafe condition, and use the model-specific service path.

Safe sequence

  1. 1Stop and unplug the dryer.
  2. 2Clean the lint filter and inspect only accessible duct sections.
  3. 3Use a professional vent-cleaning service for the home exhaust system.

Stop and get qualified help when

  • The dryer or vent is unusually hot
  • D90 returns after professional vent cleaning
Primary sourceLG USA — d90/d95 dryer errors ↗Verified 2026-07-17 · manufacturer