Samsung Dishwasher Error Code 4E1

The 4E1 code on a Samsung dishwasher signals a hot water supply error. It means the dishwasher has detected incoming water temperature above 176°F (80°C), or the thermistor that measures that temperature is malfunctioning. The appliance stops the cycle to prevent heat-related damage to internal components. Resolving the code requires either reducing the hot water supply temperature or diagnosing the thermistor.

No, you should not attempt to run the dishwasher while the 4E1 error is active. The code indicates that water entering the machine may be hot enough to warp or damage internal plastic components including the tub lining, door gasket, and spray arms. Address the underlying cause before resuming use.

If the fix is simply adjusting the water heater temperature, there is no parts cost involved. If the thermistor needs replacement, parts and labor typically range from $100 to $250 depending on your location and service provider. Wiring repairs or additional component work can push that range higher, which is why accurate diagnosis before ordering parts is important.

Start by checking the temperature of your hot water supply at a nearby tap using a thermometer. If it exceeds 176°F (80°C), lower your water heater's thermostat and restart the dishwasher. If the supply temperature is already below that threshold, the thermistor is the likely culprit and should be tested with a multimeter and replaced if it shows an incorrect resistance reading.

A reset may temporarily clear the display, but the error will return if the root cause has not been fixed. If the incoming water temperature is still above 176°F (80°C) or the thermistor is still faulty, the control board will detect the same condition on the next fill cycle and trigger the code again. Fix the underlying issue first, then reset the unit.