GE Dryer Error Code THERMISTOR

The THERMISTOR code means the dryer control board has detected a fault in the thermistor sensor circuit. The thermistor monitors internal temperature to regulate heating, and when its resistance reading falls outside the expected range, the dryer stops operating and displays this error. The fault can originate from a failed sensor, damaged wiring, or a loose connector in the circuit.

No, you should not operate the dryer while the THERMISTOR error is active. The thermistor is a key safety sensor that prevents the dryer from overheating, and running the appliance without a functioning sensor removes an important thermal protection. Continued operation could result in damage to the dryer or create a fire risk.

Unplugging the dryer for a few minutes may temporarily clear the error code, but it will return as soon as the control board detects the same fault condition again during operation. A reset does not address the underlying problem in the thermistor or its wiring circuit. Permanent resolution requires identifying and correcting the actual fault, whether that means repairing wiring, replacing the thermistor, or addressing another root cause.

A knowledgeable DIYer can often resolve this error by inspecting the wiring connectors and testing the thermistor with a multimeter. If the thermistor tests as open or reads a fixed resistance that does not respond to temperature changes, replacing the sensor is a straightforward repair that requires basic hand tools and electrical safety precautions. Always unplug the dryer before inspecting or replacing any components.

If only the thermistor sensor needs replacement, parts typically cost between $10 and $40 depending on the model, making it one of the more affordable repairs. If a technician performs the repair, expect to pay between $100 and $200 total including labor. If the control board is the root cause, parts alone can range from $100 to $300 or more, and total repair costs will be significantly higher.