GE Dryer Error Code E25

The E25 error code on a GE dryer indicates an open circuit condition in the control NTC (Negative Temperature Coefficient) thermistor circuit. The control thermistor is a temperature-sensing resistor that feeds real-time temperature data to the electronic control board. At normal operating temperatures, this thermistor should produce a resistance reading of approximately 50K ohms, plus or minus 10%. When the control detects that the resistance signal is absent or outside of any plausible range, it interprets this as an open circuit and triggers the E25 fault.

An open circuit in this context means the electrical path through the thermistor or its connecting wiring has been broken completely. This is distinct from a short circuit. The break can occur within the thermistor component itself, at a connector, or along the wire harness that runs between the thermistor and the electronic control board. Because the thermistor is an NTC type, its resistance decreases as temperature increases, so the control board expects a continuous and variable signal within a logical range. A completely absent signal is flagged immediately as a fault.

Diagnosing E25 requires isolating whether the fault originates in the thermistor itself or in the surrounding wiring and control board. Disconnecting the thermistor and measuring resistance directly with a multimeter is the first step. A reading outside the 50K ohm target range (typically 45K to 55K ohms) points to a failed thermistor. If the thermistor checks out, the wiring harness and connectors must be inspected for breaks, corrosion, or loose terminals. If both the thermistor and wiring are confirmed good, the electronic control board itself is the likely source of the fault.