Bosch Washer Error Code dr:01

The dr:01 code means the washer has detected a short circuit in the motor control unit (MCU). The MCU is the electronic board that regulates power and speed to the drive motor. When a short circuit is present, the machine stops operation to prevent further electrical damage. This fault requires running service test P4 and, in most cases, replacing the motor control unit.

No, you should not attempt to operate the washer while dr:01 is active. A short-circuited motor control unit can pose a risk of electrical damage to other components or, in rare cases, create a fire or shock hazard. Leave the washer unplugged until it has been inspected and repaired by a qualified technician.

Repair costs vary depending on whether the issue is a wiring problem or a full motor control unit replacement. Wiring harness repairs tend to be less expensive, generally in the range of $100 to $200 including labor. Replacing the motor control unit itself typically costs between $200 and $450, depending on the specific Bosch model and local labor rates. Getting a diagnostic appointment first is advisable to confirm the exact failed component before committing to parts.

Diagnosing and repairing a dr:01 error requires running Bosch service test program P4, which is typically performed by a technician using specific diagnostic procedures. A knowledgeable DIYer can inspect the wiring harness and connectors between the MCU and motor for visible damage, but if the fault is confirmed to be an internal short in the MCU, the board must be replaced. Working with high-voltage appliance components carries serious safety risks and is generally not recommended without proper training.

A simple power reset will not resolve a dr:01 error if the motor control unit has a genuine short circuit. The fault is hardware-based, meaning it will return immediately or as soon as the machine attempts to run the motor. A reset may temporarily clear the code display, but the underlying electrical fault must be repaired for the error to be permanently resolved.