Error Code C90
Your dryer vent is over 90% blocked — needs immediate cleaning
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: C90 (C9)
What This Means
Severe lint buildup in exhaust duct; Completely blocked or collapsed exhaust duct; External exhaust hood completely obstructed
What actually causes this:
Severe lint buildup in the exhaust vent is almost completely blocking airflow. This is a fire hazard.
First Thing to Check
Stop using the dryer and check the exhaust vent immediately for heavy lint buildup.
Parts Involved
How to Fix
- 1
1. Clean the lint filter
- 2
2. Thoroughly clean the entire vent duct system
- 3
3. Check vent condition and refer to ducting requirements
- 4
4. Must have expert personnel perform cleaning
Parts Commonly Needed for This Error
OEM part numbers confirmed by retailers
This Error Applies To
Samsung DVE45T3200 Series Dryers (2020) (2020–present)
Related Error Codes
The dryer's internal parts aren't communicating properly
A secondary temperature sensor is giving bad readings
A button on the control panel is stuck or shorted
The door switch isn't working properly
Your dryer detected restricted airflow during a vent test
The vent blockage test found a problem with your exhaust
Your dryer is getting the wrong type of electrical power
Your dryer isn't heating properly or is overheating