Samsung Washer Error Code TCH1

TCH1 on a Samsung washer indicates a humidity sensor fault caused by the detection of an abnormal humidity value. The control board monitors the signal from the humidity sensor and triggers this code when the reading falls outside the expected range. The issue can stem from a loose connector, corroded pins, a damaged wiring harness, or a failed sensor. Checking the sensor's electrical connections is the recommended first diagnostic step.

The TCH1 code signals a sensor fault that may affect how the washer manages its cycle, particularly on models with drying functions. It is advisable to avoid using the machine until the fault is diagnosed and corrected to prevent incomplete cycles or potential issues with moisture management inside the drum.

A power reset may temporarily clear the code, but if the underlying cause such as a faulty sensor or loose connector has not been addressed, the TCH1 code will return once the washer runs a cycle and reads the abnormal humidity value again. A reset is useful for confirming whether a fault is intermittent, but it is not a substitute for diagnosing and correcting the root cause.

In many cases, yes. Start by unplugging the washer and locating the humidity sensor connector, then check that it is fully seated and free of corrosion. Reseating a loose connector is a straightforward repair that requires no parts. If the connector is intact and the fault returns, replacing the humidity sensor is the next step, which is a moderate DIY repair for someone comfortable working inside appliances.

If the fault is simply a loose connector, the repair costs nothing beyond your time. If the humidity sensor itself has failed, the cost of a replacement sensor typically ranges from around $20 to $60 for the part, plus any labor costs if you use a technician. A professional diagnostic and repair visit can range from $80 to $200 or more depending on your region and the complexity of the repair.