Samsung Dryer Error Code tC5

The tC5 code means the dryer's control board has detected that Thermistor 2, the vent thermistor, is reporting a resistance value that is either too low or too high. This thermistor monitors exhaust air temperature, and an out-of-range reading can indicate a blocked vent system, a failed sensor, or a wiring problem. The dryer will typically stop normal operation when this code is active to prevent a potential thermal hazard.

Running the dryer with an active tC5 code is not recommended. Thermistor 2 is part of the dryer's thermal protection system, and if it is not providing accurate data, the dryer cannot properly regulate exhaust temperature. Continued use could pose an overheating risk. Diagnose and resolve the fault before resuming normal operation.

Repair costs depend on the root cause. If the fix is simply clearing a vent blockage, the cost may be minimal or nothing at all. Replacing the vent thermistor typically costs between $20 and $75 for the part, plus labor if a technician is involved. A full service call including diagnosis and labor can range from $100 to $250 or more depending on your location and the extent of the repair needed.

Some causes of tC5 are DIY-friendly, such as clearing a clogged lint screen or straightening a kinked exhaust hose. If cleaning the vent system does not resolve the code, checking and reseating the thermistor wiring connector is another accessible step. Replacing the thermistor itself is a moderate repair that requires disassembling part of the dryer cabinet, and if the control board is involved, professional service is advisable.

A power cycle reset, such as unplugging the dryer for a few minutes and plugging it back in, may temporarily clear the tC5 code if the fault was caused by a transient signal issue. However, if the underlying problem is a blocked vent, a failed thermistor, or damaged wiring, the code will return once the dryer runs again. A reset is not a repair and should only be used as part of the diagnostic process.