tC5
Samsung Dryer
Severity: ModerateWhat Does This Error Mean?
Samsung dryer error tC5 means the exhaust temperature sensor has detected a reading outside the normal range. This sensor monitors the temperature of hot air leaving the drum, and the dryer stops when the reading is not trustworthy. The cause is usually a failed exhaust thermistor or a loose wire connection.
Affected Models
- Samsung DVE52M7750W
- Samsung DVE60M9900V
- Samsung DVE45T6000W
- Samsung DVG52M7750W
- Samsung DVE45R6100C
Common Causes
- The exhaust duct thermistor has burned out or degraded and is no longer giving accurate readings
- The wire connector linking the exhaust thermistor to the control board is loose or has corroded
- Excessive lint has built up around the exhaust thermistor, causing it to misread the actual temperature
- The dryer has been subjected to repeated overheating cycles, shortening the life of the exhaust sensor
- A fault on the main control board is causing it to misinterpret the exhaust thermistor signal
How to Fix It
-
Unplug the dryer and wait one full minute. Reconnect power and attempt to start a cycle. A hard reset can clear a minor sensor communication glitch.
If tC5 does not return after the reset, monitor the next few drying cycles to confirm the fix has held.
-
Clean the lint filter completely — remove all visible lint. Then check the exhaust vent hose at the back of the dryer for kinks, blockages, or disconnected sections.
Poor airflow causes the exhaust to run hot, which accelerates wear on the exhaust thermistor.
-
Pull the dryer away from the wall and check the exterior vent flap outside your home. It should open freely during a drying cycle and close when the dryer is off.
A stuck closed vent flap forces all exhaust heat back into the vent hose and past the sensor — this is the most common cause of exhaust thermistor damage.
-
If the error persists, unplug the dryer and remove the back panel. Locate the exhaust thermistor near the exhaust duct outlet. Check that both wire connectors are firmly pressed onto the sensor terminals.
Reseating a loose connector sometimes resolves tC5 without needing any parts.
-
Have a technician test the exhaust thermistor with a multimeter. If the resistance reading is incorrect, replace the sensor. If the sensor reads correctly, the control board may be at fault.
Exhaust thermistors for Samsung dryers typically cost $15–$30. Always use a genuine Samsung replacement part or a certified equivalent.
When to Call a Professional
Accessing the exhaust thermistor means opening the dryer cabinet. If you are not confident working inside appliances, book a Samsung-certified technician. Incorrect reassembly of vent components could create a fire hazard — get professional help if in doubt.
Frequently Asked Questions
What is the exhaust thermistor and where is it?
The exhaust thermistor is a small sensor that measures the temperature of air leaving the dryer drum through the exhaust duct. It is usually mounted near the exhaust outlet inside the dryer cabinet, close to the back panel. It looks like a small plastic capsule with two thin wires attached.
How is tC5 different from tC?
Both tC and tC5 are temperature sensor errors, but they reference different sensors. tC typically refers to the main drum thermistor, while tC5 specifically refers to the exhaust duct thermistor. The fix approach is similar, but the exact sensor location differs.
My dryer was drying clothes fine before tC5 appeared. Is something serious wrong?
Not necessarily. Thermistors wear out over time, especially if the dryer has had poor airflow at any point. The fix is usually a straightforward sensor replacement. The most important thing is to not use the dryer while tC5 is active — it cannot regulate heat safely without a working exhaust sensor.