Samsung dryer error code

C90

Vent mostly blocked

A vent test found the exhaust vent is about 80 percent (C80) or over 90 percent (C90) blocked.

Also shown on some Samsung models as: C9o C9 C80 C8o C8

Try these free fixes first

Unplug the dryer before opening any panel.

  1. Clean the lint screen.
  2. Unplug the dryer and pull it out from the wall.
  3. Straighten any crushed or kinked vent hose.
  4. Clean lint from the full vent run and the outside cap.

Still showing C90?

For long or hidden vent runs, call a vent cleaning professional.

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Questions people ask

What does C90 mean on a Samsung dryer?

C90 on a Samsung dryer means: vent mostly blocked. A vent test found the exhaust vent is about 80 percent (C80) or over 90 percent (C90) blocked.

How do I fix Samsung dryer error C90?

Clean the lint screen. Unplug the dryer and pull it out from the wall. Straighten any crushed or kinked vent hose. Clean lint from the full vent run and the outside cap.

When should I call a repair technician?

For long or hidden vent runs, call a vent cleaning professional.

Related dryer codes

LG d80Dryer: Dryer vent is restrictedLG F0Dryer: Lint filter not insertedBosch E01Dryer: Lint filter is blockedBosch E12Dryer: OverheatingWhirlpool AFDryer: Restricted airflow, check ventGE Check VentDryer: Dryer vent is blocked

Source: Samsung official support · Reviewed 2026-10-01