Electrolux Dryer Error Code E4A — Thermistor Open or Shorted
What this means
The E4A error code on Electrolux dryers indicates the thermistor (temperature sensor) is providing a reading that is outside the normal operating range. This typically means the thermistor has an open circuit, a short circuit, or a loose connection. Without accurate temperature feedback, the dryer cannot regulate heat properly and will stop as a safety precaution.
Alternate codes: E 4A, E4 A
Step-by-step fix
4 stepsLocate the thermistor
Unplug the dryer. The thermistor is usually a small sensor mounted in the blower housing or air duct, connected by two wires. Access it by removing the rear panel or the lower front panel, depending on your model.
The thermistor looks like a small cylindrical or flat sensor about the size of a fingertip.
Test the thermistor
Disconnect the thermistor wires and test resistance with a multimeter. At room temperature (about 70°F / 21°C), it should read approximately 10,000–12,000 ohms (10K–12K). An OL reading means open circuit; a very low reading means short circuit.
Warm the thermistor gently with your hand — the resistance should decrease slightly, confirming it is functional.
Check the wiring
If the thermistor tests fine, inspect the wiring from the thermistor to the control board. Look for loose connectors, broken wires, or corroded pins. Reseat connectors firmly.
Vibration from the dryer drum can loosen wire connectors over time.
Replace the thermistor if faulty
If the thermistor reading is out of range, replace it. Remove the mounting screw, disconnect the old sensor, and install the new one. Reconnect the wires and run a test cycle.
Thermistors are inexpensive — if in doubt, replace it rather than spending more time troubleshooting.
When to call a professional
If the thermistor and wiring test fine, the control board's temperature sensing circuit may be faulty. A technician can test the board input.
Related error codes
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.
Learn more about our sourcesParts you may need
Thermistor (Temperature Sensor)
Part #137060900 · $10–$25
If resistance is outside 10K–12K ohms at room temperature
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