Jenn-Air Dishwasher Error Code E:03

E:03 indicates that the working relay controlling the heater circuit inside the power module has been detected as defective. The dishwasher will continue to run its cycles but the heating element will not activate, so water will stay cold and dishes will not dry properly. Resolving this fault requires replacing the power module.

The dishwasher will continue to operate with E:03 active, and there is no immediate safety hazard from running it in this state. However, wash performance will be significantly reduced since the water will not heat to proper temperatures. Running the machine long-term without resolving the fault is not recommended, and any underlying wiring issues contributing to the relay failure should be ruled out promptly.

Repair costs vary depending on parts pricing and labor rates in your area. Power module replacement parts typically range from $80 to $200 or more depending on the specific model, and professional labor can add $100 to $250 to the total. Getting a diagnostic quote from a certified appliance technician before proceeding is advisable to confirm the module is the correct repair.

The repair involves replacing the power module, which requires disconnecting electrical connections inside the dishwasher. Technicians with appliance repair experience can perform this replacement, but due to the high-voltage components involved, homeowners without that background should hire a qualified technician. The faulty relay inside the module is not separately repairable in the field.

A power reset may temporarily clear the code from the display, but the fault will return once the control system re-evaluates the heater relay circuit during the next cycle. The underlying relay failure in the power module must be corrected through component replacement for the code to clear permanently.