Bosch Dishwasher Error Code 9

Error code 9 on a Bosch dishwasher means the Aquastop flood protection system has been triggered. This happens when water is detected in the base tray beneath the inner tub, or when the wire harness connected to the float switch is damaged. The dishwasher will lock out and refuse to run until the condition is resolved.

No, you should not attempt to run the dishwasher while error code 9 is active. The Aquastop system has shut the appliance down specifically to prevent water damage to your home. Running the machine before the underlying leak or wiring issue is resolved could result in flooding or further damage to the appliance.

Repair costs vary widely depending on the cause. Replacing a door gasket typically falls in the range of $50 to $150 including parts and labor. A circulation pump or pump seal replacement can run from $150 to $350 or more depending on the model and labor rates in your area. If the issue is simply a loose hose clamp or a damaged wire connector, the cost may be minimal.

Start by removing the lower kickplate panel and checking for standing water in the base tray. If water is present, use a towel or wet vac to remove it, then identify and repair the source of the leak before running the machine again. If the base tray is dry, inspect the wire harness connected to the Aquastop float switch for pinched wires, broken connectors, or corrosion, and repair or replace as needed.

A reset may temporarily clear the display, but the code will return as soon as the dishwasher attempts to run if the underlying issue has not been fixed. The Aquastop float switch will re-trigger if water is still in the base tray or if the wiring fault is still present. The root cause must be addressed before the appliance will operate normally.