Samsung Dryer tE3 Error Code — What It Means
The tE3 code indicates a fault in your Samsung dryer’s temperature detection circuit or an overheating condition that is causing the temperature-sensing system to report abnormally. The control board cannot get a valid temperature reading from the thermistor (temperature sensor) during the cycle. This code is grouped with temperature-measurement problems and is most often triggered by restricted airflow that causes overheating, or by a failed thermistor or damaged wiring in the sensor circuit. The dryer may stop mid-cycle or refuse to start when this fault is active.
Common Causes
- Clogged lint screen or blocked vent system Restricted airflow from lint buildup in the filter, vent hose, or exhaust duct causes overheating and trips the temperature-sensing circuit.
- Failed thermistor (temperature sensor) The thermistor may read out of range or open, preventing the control board from monitoring dryer temperature correctly.
- Loose, corroded, or damaged wiring and connectors Poor connections or broken wires in the thermistor circuit cause intermittent or invalid temperature readings.
- High-limit thermostat or thermal safety fault A tripped or failed high-limit thermostat in the heater assembly can mimic or trigger a temperature-sensing error.
- Defective main control board If the sensor circuit and airflow are good, the control board itself may be misreading or failing to process the thermistor signal.
Step-by-Step Fix
- Unplug the dryer and wait 60 seconds, then restore power to reset the control board and confirm the code returns on a test cycle.
- Remove and clean the lint screen thoroughly, and vacuum out the lint trap housing to make sure no residue blocks airflow into the drum.
- Inspect the external vent system from the dryer outlet to the exterior termination, clearing any blockages, lint buildup, crushed hose sections, or excessively long restrictive runs.
- Access the heater housing (typically behind the lower front panel or rear panel, depending on model) and locate the thermistor and its connector on or near the heating element assembly.
- Inspect all wiring and connectors in the thermistor circuit for corrosion, looseness, or visible damage, and re-seat any suspect connections.
- Test the thermistor with a multimeter set to resistance mode at room temperature (expect approximately 10 kΩ, though you should consult your model’s service data for the exact specification and temperature curve).
- Check the high-limit thermostat for continuity if the thermistor tests good, and replace any open or out-of-spec thermal safety device before reassembling and running a full test cycle to verify the code is cleared.
Parts Often Needed
| Part | Notes |
|---|---|
| Samsung Dryer Thermistor / Temperature Sensor | Amazon | Verify the part number for your exact model before ordering. |
| High-Limit Thermostat | Amazon | Located on or near the heater assembly, model-specific. |
| Dryer Vent Hose or Duct Kit | Amazon | Replace if crushed, damaged, or excessively restrictive. |
| Main Control Board | Amazon | Only needed if sensor circuit and airflow are verified good and code persists. |
When to Call a Pro
Call a technician if you have cleaned the lint system and vent thoroughly, verified all visible wiring, and the code returns without an obvious cause. Thermistor and control-board diagnosis require a multimeter and familiarity with resistance testing and service data for your specific model. If you are uncomfortable working with electrical connectors or disassembling the heater housing, a qualified appliance technician can test the entire temperature-sensing circuit, compare readings to factory specifications, and replace the correct component the first time.