GE Dryer Error Code t0

The t0 code means the dryer's thermistor circuit has gone open, with the thermistor voltage reading below 0.2 VDC for more than 5 seconds. The thermistor is the temperature sensor that tells the control board how hot the dryer is running. When this signal is lost, the dryer cannot safely regulate heat and will display the fault code. The problem can be in the thermistor itself, the connecting wiring, or the control board.

Resetting the dryer by unplugging it for a few minutes may temporarily clear the code, but if the underlying fault still exists, the t0 error will return once the control board detects the low voltage condition again for more than 5 seconds. A reset is useful for confirming whether the fault is intermittent, but it does not repair a failed thermistor, broken wire, or faulty PCB.

Repair costs depend on which component has failed. A replacement thermistor is generally an inexpensive part, with DIY costs typically ranging from $10 to $40 for the part alone. If a professional is needed, labor charges will add to that total. A PCB replacement is significantly more expensive, with parts and labor potentially ranging from $150 to $350 or more depending on the model and service provider.

A knowledgeable DIYer can diagnose and fix this code in many cases. Start by checking the wiring and connectors between the thermistor and the PCB for any visible damage or loose connections. If the thermistor tests open with a multimeter, replacing it is a straightforward repair. If the wiring and thermistor are both good, the PCB may need professional evaluation or replacement.

It is not recommended to operate the dryer while this code is active. The thermistor is a critical safety component that prevents overheating by providing temperature feedback to the control board. Without a valid reading, the dryer cannot properly regulate its heating element, which creates a potential fire and safety risk. The dryer should remain out of service until the fault is diagnosed and corrected.