Bosch Dishwasher Error Code dr:09

The dr:09 code means the motor control module has detected a voltage level that is too high for safe operation. The dishwasher stops to prevent damage to the motor and electronic components. The fault points directly to the motor control board as the component to inspect and replace. After replacement, diagnostic test P4 should be run to confirm the repair.

No, you should not continue running the dishwasher while dr:09 is active. The code indicates excessively high voltage at the motor control, which can damage the motor, the control board, and potentially other electronic components if the appliance is operated in this condition. Discontinue use until the motor control has been inspected and replaced as needed.

A basic reset may temporarily clear the dr:09 code, but if the motor control module is faulty, the fault will return as soon as the dishwasher attempts to run. The code is tied to an underlying hardware condition rather than a software glitch, so resetting without replacing the defective motor control will not resolve the problem. The fix requires replacing the motor control and confirming the repair using diagnostic test P4.

Replacing a motor control board involves working with internal wiring and electronic components, which is within reach of experienced DIYers comfortable with appliance repair. However, confirming the repair requires running Bosch diagnostic test P4, which is a technician-level procedure. If you are not familiar with accessing service mode on Bosch dishwashers or working with control boards, hiring a professional is the safer choice.

Repair costs depend on whether you do the work yourself or hire a technician. A replacement motor control board for a Bosch dishwasher typically ranges from $80 to $250 for the part alone, depending on the specific model. With professional labor, total repair costs generally fall in the range of $180 to $450. Getting a quote specific to your model and location is recommended.