Jenn-Air Dishwasher Error Code E:04

The E:04 code means the working relay that controls the auxiliary Zeolite drying heater has been detected as defective. The control system disables the Zeolite drying system to prevent damage, but the dishwasher continues to operate for washing. Drying performance will be reduced until the fault is repaired.

Yes, the dishwasher is generally safe to continue using for washing because the control system disables the faulty auxiliary heater circuit when this code appears. However, drying results will be noticeably worse than normal. It is still a good idea to schedule the repair promptly to restore full function and avoid any potential escalation of the underlying fault.

Repair costs vary depending on which component needs replacement. A Zeolite heater replacement typically falls in the range of $100 to $250 for parts and labor, while a power module replacement can range from $200 to $450 or more depending on the specific model and local labor rates. If both components need to be replaced, costs will be higher, so getting a diagnostic estimate before proceeding is recommended.

Diagnosing and repairing this code requires replacing either the Zeolite heater, the power module, or both. A technician familiar with disassembling dishwasher control assemblies and working safely with electrical components can perform this repair. Homeowners without appliance repair experience should consider hiring a professional, as the power module handles line voltage.

A power reset may temporarily clear the code from the display, but it will return once the control system re-tests the Zeolite heater relay during the next drying cycle. The fault will persist until the defective component, either the Zeolite heater or the power module, is actually replaced.