Bosch Dishwasher Error Code Overfill

The Overfill error means the dishwasher's protection system has detected either too much water in the wash tub or water that has leaked into the base pan beneath the unit. It is triggered when the leak detection float switch closes or when the secondary water level pressure switch activates. The dishwasher shuts down automatically to prevent water damage. This is a safety feature, not a routine operational error.

A reset may temporarily clear the error code, but if the root cause is not resolved, the error will return as soon as the dishwasher attempts to fill with water again. If water is present in the base pan, it must be removed and the source of the leak must be repaired before a reset will result in normal operation. Simply resetting without addressing the cause is not a reliable fix.

Repair costs vary depending on the root cause. Clearing a drain clog or replacing a door gasket typically falls in the lower cost range, often between $50 and $150 in parts. Replacing a water inlet valve or pressure switch generally runs between $75 and $200 for parts and labor. If a more significant component like the pump or control board is involved, costs can range from $200 to $400 or more depending on your location and the technician's rates.

No, you should not run the dishwasher while this error is active. The Overfill condition indicates a potential water leak or an overfill situation that could cause water damage to your floor or cabinetry. Inspect the unit for visible leaks and resolve the underlying cause before operating it again.

Start by checking for water in the base pan by carefully tilting the dishwasher forward. If water is present, identify and repair the leak source, which could be a door seal, pump seal, or hose connection. If no water is found, inspect the drain system for blockages and verify the water inlet valve closes completely. A faulty pressure switch or float switch may also need to be tested and replaced if mechanical and plumbing causes are ruled out.