GE Dryer Error Code E4 — Inlet Thermistor Open Circuit
What this means
The E4 error code on GE dryers means the inlet thermistor has an open circuit — the control board is reading infinite resistance from the sensor. This usually means the thermistor itself has failed, a wire has broken, or the connector has come loose. Without a valid temperature reading from the inlet sensor, the dryer cannot regulate its heating element safely.
Step-by-step fix
5 stepsPower cycle the dryer
Unplug the dryer for 30 seconds and plug it back in. Run a timed dry cycle to check if the code clears. An intermittent loose connection can cause a one-time E4 fault.
If the dryer starts but the code returns mid-cycle, vibration may be loosening a connector.
Access the inlet thermistor
Unplug the dryer. Remove the top and front panels. Locate the inlet thermistor on the inlet air duct where heated air enters the drum area.
On GE GFD-series dryers, the inlet thermistor is typically on the right side of the duct assembly.
Check the connector and wiring
Inspect the thermistor wire connector for a loose fit, corrosion, or pulled-out pins. Push the connector firmly together and check each wire for breaks or damage along its length.
A disconnected plug is the most common cause of an E4 code and costs nothing to fix.
Test the thermistor for continuity
Disconnect the thermistor and measure its resistance with a multimeter. At room temperature, it should read approximately 10,000 ohms. An OL (open line) reading confirms the thermistor is faulty and needs replacement.
Also test continuity of each wire from the thermistor connector back to the control board connector to rule out a broken wire.
Replace the thermistor if needed
Remove the old thermistor from its mounting clip, install the new one, reconnect the harness, and reassemble the panels. Run a full heated cycle to verify the error is resolved.
Route the wires away from sharp edges and moving parts to prevent future wire damage.
When to call a professional
If the thermistor, wiring, and connector all check out fine but the E4 code continues, the control board input may be damaged. A technician can test the board and replace it if necessary.
Related error codes
The dryer's inlet thermistor has a short circuit, preventing accurate temperature readings.
Moderate Repair · 20–40 minutes
The dryer's outlet thermistor has a short circuit, giving the control board false temperature data.
Moderate Repair · 25–45 minutes
The dryer's outlet thermistor has an open circuit, meaning no signal is reaching the control board.
Moderate Repair · 25–45 minutes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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