Mabe Dishwasher Error Code E3

E3 means the dishwasher took too long to reach the required water temperature during a heating phase. The control board monitors heating time, and when the target temperature is not achieved within the allowed window, it displays E3 and stops the cycle. The most likely causes are a failed heating element or a faulty temperature sensor. Both components should be checked before proceeding to wiring or control board diagnosis.

You should not continue running the dishwasher while E3 is active. The appliance will not complete cycles correctly, and dishes will not be sanitized at the proper temperature. Continuing to operate the unit with a faulty heating circuit can place unnecessary stress on the control board and pump. Resolve the underlying fault before resuming normal use.

Resetting the dishwasher may temporarily clear the E3 code, but it will return as soon as the unit attempts another heating cycle if the underlying fault has not been corrected. A reset is useful for confirming whether the error was caused by a one-time glitch, but persistent E3 codes require physical inspection and testing of the heating element and temperature sensor.

Some aspects of E3 diagnosis are accessible to a confident DIYer, such as inspecting wiring connectors for corrosion and testing the heating element for continuity with a multimeter. Replacing the temperature sensor is also a relatively straightforward repair on most models. However, if the control board relay is the root cause, board-level repair or replacement is best handled by a qualified technician.

Repair costs vary depending on the faulty component. A replacement temperature sensor typically costs in the range of $15 to $40 for the part, while a new heating element generally runs between $30 and $80. Adding professional labor can bring the total repair cost to somewhere between $100 and $250 or more, depending on your location and the technician's rates.