Bosch Dishwasher Error Code E:0103

E:0103 indicates a power module defect related to internal pump control, specifically a ground fault detected at the water heater circuit or a failed heater relay within the power module. The dishwasher disables the affected circuit when this fault is present. Resolving it requires replacing either the heating pump or the power module, depending on which component is at fault.

It is not recommended to continue using the dishwasher while E:0103 is active. The code indicates a ground fault condition in the heater circuit, which poses a potential electrical hazard. Running the appliance in this state could cause further damage to the power module or wiring, and in the case of an active ground fault, there is a risk of electrical shock or tripping a circuit breaker.

Repair costs vary depending on which component has failed. A replacement heating pump typically falls in the range of $80 to $200 for the part alone, while a power module can range from $100 to $300 or more. Adding professional labor costs, the total repair bill generally falls between $150 and $500 depending on the specific model and local labor rates.

The repair process starts by inspecting and testing the heating pump for a ground fault or internal electrical failure. If the heating pump is found to be defective, it should be replaced. If the heating pump tests normally, the power module itself is likely defective and will need to be replaced. Both repairs typically require disassembly of the dishwasher and familiarity with appliance electrical systems.

A reset may temporarily clear the display, but E:0103 will return as soon as the dishwasher attempts to operate the heater circuit again. The underlying fault, whether it is a failed heating pump or a defective heater relay in the power module, must be physically repaired or replaced before the error will stay cleared.