Samsung Dryer Error Code tS
Thermistor short circuit — temperature sensor reading too low resistance
The control board reads the exhaust thermistor continuously to regulate heat. tS means the sensor circuit reads as shorted (near-zero resistance), so the dryer can't trust its temperature reading and stops heating. The thermistor itself or a pinched harness wire is almost always the cause.
What Does Error Code tS Mean on a Samsung Dryer?
Thermistor short circuit — temperature sensor reading too low resistance.
The control board reads the exhaust thermistor continuously to regulate heat. tS means the sensor circuit reads as shorted (near-zero resistance), so the dryer can't trust its temperature reading and stops heating. The thermistor itself or a pinched harness wire is almost always the cause.
What Causes Error Code tS?
Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:
- 1 Failed (shorted) thermistor 60% of cases
- 2 Harness wire pinched or chafed to ground 25% of cases
- 3 Connector corrosion at the sensor 15% of cases
How to Fix Samsung Dryer Error Code tS
- 1
Test the thermistor
Unplug the dryer, remove the back or lower front panel, and measure the thermistor on the heater/blower housing: about 10kΩ at room temperature. Near 0Ω confirms tS.
- 2
Inspect the harness
Trace the two sensor wires for pinch points where panels were assembled, and check the connector pins.
- 3
Replace the thermistor
Two screws and a connector — one of the cheapest, easiest dryer repairs.
🔩 Samsung dryer thermistor ($10–$25)⚠️ Unplug the dryer before removing panels.
How to Reset Error Code tS
After replacement, plug back in and run a Time Dry cycle on medium heat to confirm normal operation.
Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.
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Thanks for letting us know. If the steps above didn't work, see when to call a professional.
When to Call a Professional
If a new thermistor still reads shorted at the board connector, the harness or main board input has failed — meter the harness before buying a board.
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Frequently Asked Questions
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Sources & References
- • Samsung Support — Error Codes — official manufacturer documentation
- • Our editorial & verification policy
Content verified against manufacturer service documentation. Last verified: June 11, 2026.