Samsung Dishwasher Error Code 4E2

The 4E2 error code means the dishwasher has detected incoming water at 80°C or above during the fill cycle and has shut down to prevent damage. It points to either an actual high-temperature water supply condition or a faulty thermistor sending an incorrect reading to the control board. The machine will not continue operating until the temperature issue is resolved or the defective component is repaired.

No, the dishwasher should not be operated while the 4E2 error is active. The machine has halted the fill cycle as a protective measure, and attempting to bypass or reset the error without addressing the root cause could result in damage to internal components including seals, plastic parts, and the wash tub. Resolve the water temperature or sensor issue before resuming use.

A power reset may temporarily clear the error code display, but if the underlying cause has not been fixed, the 4E2 code will return as soon as the dishwasher attempts to fill again. A reset is a useful first step to confirm whether the fault is intermittent, but it is not a repair. The water supply temperature and sensor components must be inspected and corrected for a lasting resolution.

Some causes of 4E2 can be addressed without a technician. Start by checking your water heater thermostat and lowering it if it is set above 60°C. If the supply temperature is normal, the thermistor or Main PBA will need to be tested and potentially replaced, which requires basic electrical diagnostic skills and component sourcing. If you are not comfortable testing electrical components, a qualified appliance technician should handle the repair.

Repair costs depend on the cause. If only the water heater thermostat needs adjustment, there is no parts cost and minimal labor if any. A thermistor replacement typically falls in the range of $20 to $80 for the part, plus labor if a technician is used. Main PBA replacement is more expensive, generally ranging from $100 to $300 or more for the board, plus labor costs that vary by region.