Bosch Dishwasher Error Code E:02

E:02 on a Bosch dishwasher indicates a fault in the heating circuit, caused by either a faulty relay on the power module for the heat pump or zeolite heater, or a ground fault detected at one of those heaters. The dishwasher will continue to operate but will not heat water or activate the drying system. Identifying which specific component has failed is necessary before proceeding with repairs, as the fix differs depending on whether the fault is in the power module, the heat pump, or the zeolite container.

A ground fault condition, which is one possible cause of E:02, means current is leaking to an unintended path within the appliance. Continuing to run the dishwasher with an active ground fault presents an electrical safety risk and could cause additional damage to other components. It is best to stop using the appliance until the fault has been properly diagnosed and repaired.

A basic reset may temporarily clear the E:02 code from the display, but the underlying hardware fault will cause the error to return once the dishwasher attempts to activate the heating circuit again. Because E:02 is caused by a physical component failure such as a failed relay or a ground fault, it cannot be resolved through resetting alone. The faulty component must be replaced to permanently clear the fault.

Resolving E:02 requires replacing either the power module, the heat pump assembly, or the zeolite container, depending on which component is at fault. These are internal components that involve electrical connections and disassembly of the appliance. Technicians with experience in appliance repair can perform these replacements, but homeowners without electrical repair experience should consider hiring a professional due to the ground fault risks involved.

Repair costs depend on which component has failed. Power module replacement typically falls in the range of $150 to $350 including parts and labor. Heat pump assembly or zeolite container replacement can cost more, often ranging from $200 to $500 or higher depending on the specific model and local labor rates. Getting a diagnostic assessment from a technician before ordering parts helps avoid unnecessary expenses.