Understanding the Samsung Dishwasher “tE” Error
What it means: On many Samsung dishwashers the tE error code indicates a temperature-related fault — typically a problem with the temperature sensor (NTC thermistor) or the related heating circuit. The control board uses the sensor to monitor water and cycle temperatures; if the sensor reports an impossible value, is open/shorted, or communication is lost, the dishwasher will display tE and may halt the cycle or run improperly.
Why it occurs: Common causes include a failed thermistor, damaged wiring or connectors, a faulty heating element that affects temperature reading, or a defective main control board. Environmental factors (excessive moisture, corrosion, or physical impact) and occasional software/controller glitches can also trigger the code.
User impact: A tE error can lead to poor cleaning performance, longer or stalled cycles, incomplete drying, persistent error displays, or the dishwasher refusing to heat water. In some scenarios a malfunctioning temperature circuit could allow overheating (rare) or prevent sanitizing cycles from reaching necessary temperatures, which is a hygiene concern. Repeated attempts to run the dishwasher with a temperature fault can stress the heating element and electronics.
Common Causes
- Defective NTC temperature sensor (thermistor)
- Open or shorted wiring harness to the temperature sensor
- Loose, corroded, or water-damaged sensor connector
- Faulty heating element affecting temperature readings
- Malfunctioning main control board (PCB) or temperature input circuit
- Software or firmware glitch in rare cases
- Physical damage or moisture intrusion in the control compartment
Troubleshooting Steps
- Reset the dishwasher: Turn off power at the circuit breaker or unplug for 2–5 minutes, then restore power to see if the error clears.
- Run diagnostics (if available): Some Samsung models include service test modes; consult your manual to enter diagnostics and read temperature sensor codes.
- Inspect visible wiring and connectors: Pull out the unit (if comfortable) and check the harness running to the heater/sensor for loose plugs, corrosion, or broken wires.
- Check the sensor resistance: With the unit powered off and unplugged, locate the NTC thermistor and measure resistance with a multimeter. Typical resistances vary by model and temperature (consult service data), but an open circuit or extreme reading indicates a bad sensor.
- Test the heating element: Measure continuity of the heater; a shorted or open element can affect temperature readings and may cause the control to show tE.
- Swap or reseat connectors: Disconnect and reconnect sensor con