Bosch Dishwasher Error Code E:9240

E:9240 means the dishwasher has detected a fault with the Zeolite drying system fan. The error is triggered when the fan is blocked, there is an open circuit in the wiring or connector, or the motor winding resistance reads outside the acceptable range. The appliance will continue to wash normally but will operate without the Zeolite drying function until the fault is resolved.

Yes, the dishwasher is generally safe to continue using for washing cycles. The control board disables the Zeolite drying system when this fault is present, meaning the appliance runs without active drying rather than shutting down completely. However, you should have the fault diagnosed and repaired to restore full drying performance and prevent any secondary wear on related components.

Repair costs vary depending on the cause. If the issue is only a blocked fan or a loose connector, the cost may be limited to a service call fee, typically in the range of $75 to $150. Replacing the Zeolite fan motor assembly adds parts costs that can bring the total to roughly $150 to $350 or more, depending on parts availability and labor rates in your area.

A knowledgeable DIYer can handle some steps, such as checking for visible blockages on the fan and inspecting wire connectors for corrosion or loose connections. Measuring motor winding resistance requires a multimeter and basic electrical knowledge. Replacing the fan motor assembly involves disassembly of internal components, so comfort with appliance repair is recommended before attempting that repair.

A reset may temporarily clear the error code from the display, but if the underlying fault is still present the code will return once the dishwasher runs a cycle and the control board checks the fan circuit again. A permanent fix requires diagnosing and correcting the root cause, whether that is a blocked fan, a wiring fault, or a failed motor.