Modern Bosch washing machines are designed with intelligent error detection systems that quickly alert users to internal issues. One of the most common and concerning messages homeowners encounter is the Bosch washing machine F43 error. This error code appears when the drum is not turning, typically caused by a motor fault or mechanical jam.

If your Bosch washer has stopped spinning or won’t start a wash cycle, addressing this issue promptly is crucial to prevent further damage. Below, we’ll explain what the F43 code means, outline simple troubleshooting steps, and help you decide when to call a professional.

Understanding error code F43

The F43 error code indicates that your Bosch washing machine has detected a motor or drum rotation failure. The control board continuously monitors the drum’s motion, and if it senses that the drum cannot turn as expected, it stops the cycle to prevent motor damage.

Common reasons for the F43 error:

• Motor jammed or seized – caused by mechanical blockage or internal failure.
• Worn carbon brushes – reduced electrical contact causes weak or no drum movement.
• Faulty motor or tachogenerator – the system cannot correctly detect drum speed.
• Control board communication fault – signals between motor and control unit are interrupted.

When this error appears, your Bosch drum not turning is a clear sign that something within the drive system needs attention.

Step-by-step troubleshooting guide

If you’re comfortable performing basic checks, try the following steps to troubleshoot the Bosch washing machine F43 error safely.

⚠️ Safety First: Always unplug your washer from the electrical outlet before attempting any inspection or maintenance.

Step 1: Reset the control system

Turn off the washer and unplug it for at least 5 minutes. This allows the control unit to discharge and reset. Plug it back in and restart a short cycle to see if the error clears.

Step 2: Check drum movement

Gently rotate the drum by hand.

• If the drum spins freely, the issue is likely electrical.
• If it feels stuck or grinds, there may be a foreign object—like a coin, zipper, or small item—jammed between the drum and the tub.

Step 3: Inspect the motor brushes (for advanced DIY users)

If you have experience with appliance repair, you can check the carbon brushes located on the motor. Worn brushes often cause the washing machine not spinning properly. If they’re short, cracked, or unevenly worn, they’ll need replacement.

Step 4: Look for obstructions

Examine the drum interior and rubber door seal for small objects that could be restricting movement.

Step 5: Test a spin cycle

After reassembling everything, run a spin-only cycle. If the drum still doesn’t move and the F43 code reappears, the issue is likely internal—such as a defective motor or control module.

Step 6: Contact a professional

If all checks fail, it’s time to book a Bosch washer repair near me. Trained technicians can test the tachogenerator, wiring, and control board using diagnostic tools unavailable to homeowners.

When to call a professional

While some simple checks can be done safely at home, the Bosch motor fault behind the F43 error often requires technical expertise. You should schedule service if:

• The error persists after resetting the washer.
• The drum won’t turn at all during any cycle.
• You notice burning smells, sparks, or strange noises from the motor area.
• You’ve confirmed that the drum spins freely but the machine won’t start.

Professional technicians can:

• Replace worn motor brushes or a failed drive motor.
• Repair or replace the control module if communication faults are detected.
• Test the tachogenerator to confirm accurate speed feedback.

By calling an authorized Bosch service provider, you ensure safe, warranty-protected repairs with genuine parts.

Preventing future F43 errors

Preventive maintenance can significantly reduce the chance of encountering motor-related issues in your Bosch washer.

• Avoid overloading – Too much laundry stresses the motor and drive belt.
• Clean regularly – Remove lint and debris from the drum and seal.
• Use correct detergent amounts – Excess suds can affect motor balance.
• Schedule annual maintenance – Have a professional check brushes, wiring, and bearings.
• Ensure stable power – Use surge protection to safeguard electronic components.

Regular upkeep helps your washer run efficiently and prevents unexpected breakdowns.

Conclusion

The Bosch washing machine F43 error signals that the drum is not turning due to a motor fault, worn brushes, or control issue. While you can try a few safe resets and visual inspections, persistent problems should always be handled by a professional technician.

If your Bosch drum not turning issue continues, don’t wait — contact a certified Bosch washer repair near me service to get your machine running smoothly again. Prompt repair ensures long-term reliability and protects your appliance from costly damage.