Samsung Washer Error Code TCH2

TCH2 on a Samsung washer means the humidity sensor has detected no change in humidity during the cycle, indicating a sensor fault. The washer expects to see moisture levels shift as laundry dries, and when the signal stays static, the control board flags this code. The cause is typically a loose connector at the sensor, a failed sensor, or in some cases a main PCB fault.

A power reset may temporarily clear the TCH2 code, but it will return if the underlying fault is not corrected. If the humidity sensor is faulty or its connector is loose, the code will reappear once the washer attempts another cycle. A reset alone is not a fix and should only be used as part of the diagnostic process.

If only the humidity sensor connector needs to be reseated, there is no parts cost involved. Replacing the humidity sensor itself typically costs in the range of $20 to $75 for the part, plus labor if a technician performs the repair. A main PCB replacement is significantly more expensive, often ranging from $150 to $400 or more for the part alone, making proper diagnosis before ordering components especially important.

The first step you can do yourself is checking and reseating the humidity sensor connector, which requires no special tools and no parts. If the connector looks secure and undamaged, the humidity sensor itself will likely need to be replaced, which is a more involved repair but manageable for experienced DIYers. If sensor replacement does not clear the code, diagnosing or replacing the main PCB is best left to a qualified technician.

Running the washer with an active TCH2 error means the humidity sensor is not functioning correctly, so the machine cannot accurately monitor drying progress. While this does not typically present an immediate safety hazard, continuing to run cycles with a faulty sensor may result in improperly completed cycles or potential strain on other components. It is best to diagnose and resolve the fault before continuing regular use.