Samsung Dishwasher Error Code E2 — What it Means
The E2 error code on a Samsung dishwasher commonly indicates a problem with the unit’s heating circuit or temperature sensing — for example the machine is not detecting the expected water or internal temperature during a cycle. This can be caused by a faulty heating element, a malfunctioning temperature sensor (NTC/thermistor), a failed relay or control board output, damaged wiring, or in some cases a triggered leak/flood sensor that interrupts heating. Users typically notice incomplete drying, longer cycle times, poor wash results, or the dishwasher stopping mid-cycle. In some situations the heater may try to run repeatedly and shorten component life or increase energy use; in rare cases electrical faults can create a safety risk, so it’s important to diagnose and address the cause promptly.
Common Causes
- Faulty heating element (open, shorted, or partially failed)
- Defective temperature sensor (NTC/thermistor) giving incorrect readings
- Main control board or relay failure preventing heater activation
- Broken or corroded wiring and connectors in the heating circuit
- Triggered float or leakage sensor that disables heating for safety
- Software/glitch requiring a control board reset or firmware reload
- Failed high-limit thermostat or safety cutout
Troubleshooting Steps
- Safety first: Turn off power at the breaker or unplug the dishwasher before inspecting electrical components. Do not attempt live electrical testing unless you are qualified.
- Power cycle / reset: Switch power off for 1–5 minutes and back on to clear transient faults. Many control errors clear after a reset.
- Run a diagnostics cycle: Enter the dishwasher’s service/diagnostic mode (consult your model’s service manual) to read stored fault codes and test heater/NTC operation.
- Inspect for leaks: Check under the dishwasher for pooling water or a triggered float sensor in the base pan. Dry the area and reset if a leak caused the error.
- Check wiring and connectors: Visually inspect wiring to the heater and sensor for burns, corrosion, or disconnected plugs. Tighten or replace damaged connectors.
- Test the temperature sensor (NTC): Remove the sensor and measure resistance with a multimeter. Compare to the service manual values or check for continuity (no open circuit). Replace if out of spec.
- Test the heating element: With power removed, check the element for continuity and for shorts to ground. If open or shorted, replace the element.
- Inspect the control board/relay: Look for burned components, bulging capacitors, or damaged solder joints on the PCB. A faile