Possible Causes of F05 error:

• Faulty motor control board: 
  • This board electronically regulates the motor's speed and function. A malfunctioning board could send incorrect signals, causing uncontrolled starts.
• Sensor issue: 
  • Sensors that monitor motor speed or drum position might be sending inaccurate readings, confusing the control board and triggering unintended starts.
• Wiring problems: 
  • Loose or damaged wiring connected to the motor, control board, or sensors can create electrical faults leading to uncontrolled motor behavior.
• Software glitch: 
  • In rare cases, a software glitch within the control board might temporarily disrupt motor control.

Important Safety Note:

Due to the potential safety risks associated with an uncontrolled motor, DO NOT attempt any troubleshooting yourself. Unplug the machine immediately and refrain from using it until the issue is resolved by a qualified technician.

Recommended Action:

1. Contact Bosch customer service: Promptly inform them of the F05 error code and your model number. They can provide expert advice and schedule a qualified technician visit for safe diagnosis and repair.
2. Do not attempt to reset the machine: While some error codes might respond to a reset, in this case, it's crucial to avoid potentially exacerbating the issue or creating safety risks.

Additional Information:

• Do not ignore the F05 error code. Promptly contacting Bosch customer service is essential to ensure safety and prevent further damage to the machine.
• The technician will likely conduct comprehensive electrical and mechanical checks to pinpoint the exact cause of the uncontrolled motor start-up.
• Depending on the issue, repairs might involve replacing faulty components or updating software.

Remember, prioritizing safety is crucial. By leaving the diagnosis and repair to qualified professionals, you can ensure your Bosch washing machine is fixed correctly and operates safely again.