Whirlpool Dishwasher Error Code E3

E3 on a Whirlpool dishwasher indicates a heater failure fault. The control board monitors water temperature throughout the wash cycle and triggers E3 when the water does not reach the required temperature within 90 minutes. This can point to a failed heating element, a bad temperature sensor, wiring issues, or in rarer cases, a defective control board.

Running the dishwasher with an active E3 error is not recommended. Without proper water heating, dishes will not be sanitized effectively, and detergent may not dissolve or activate correctly. Additionally, an open or shorted heating element circuit left unaddressed could present an electrical risk over time.

A reset may temporarily clear the E3 code and allow a cycle to start, but the fault will return if the underlying cause is not repaired. To reset, cancel the current cycle and disconnect power to the unit for a few minutes before restarting. This can be useful for ruling out a one-time control glitch, but a recurring E3 code means a component must be diagnosed and replaced.

Some causes of E3 are DIY-friendly, such as cleaning corroded wiring connectors or confirming a loose terminal connection. Replacing the heating element or thermistor is also manageable for someone comfortable working with appliances, as both components are accessible from inside the tub or from underneath the unit. However, if the control board is at fault, diagnosis and replacement are more complex and may warrant a professional technician.

Repair costs vary depending on the failed component. A replacement heating element typically runs in the range of $20 to $60 for the part, while a thermistor or thermostat is generally $15 to $40. If a control board replacement is required, parts alone can range from $80 to $200 or more. Adding professional labor costs will increase these figures significantly.