If your Bosch washing machine displays the E50 or F50 error, it means the appliance has detected a motor fault. This issue occurs when the control system receives irregular feedback from the drive motor or tachogenerator (speed sensor). When this happens, your washer may stop mid-cycle, fail to spin, or refuse to start at all.
While a quick reset might help temporarily, this type of fault typically points to a mechanical or electrical problem that requires expert diagnosis.
What do the E50 / F50 errors mean?
The Bosch washer E50 error and Bosch washer F50 error indicate that the motor cannot maintain proper drum speed or communicate effectively with the control module. The tachogenerator—responsible for monitoring rotation speed—fails to send the expected signals, causing the system to shut down for safety.
Both codes represent the same fault but may appear differently depending on your washer’s model and software version. In short, your Bosch washing machine not spinning is the result of an electronic or motor-related malfunction.
Common causes of the Bosch E50 / F50 error
Several factors can trigger these motor fault codes:
- Faulty Tachogenerator (Speed Sensor) – The washer’s motor relies on the tachogenerator to measure RPM. If it malfunctions, the control board can’t regulate drum speed.
- Worn or Damaged Motor Brushes – Over time, the carbon brushes that deliver electrical current to the motor wear down, leading to poor performance or complete stoppage.
- Loose or Corroded Wiring – Broken or loose connectors between the motor and control module interrupt the electrical circuit.
- Motor Driver Fault – A defect in the control module’s motor driver circuit can cause irregular voltage output.
- Overheating or Moisture – Excess humidity or blocked air circulation inside the washer can short out electrical components.
In most cases, a Bosch washing machine motor fault results from worn brushes or a faulty tachogenerator, both of which require professional replacement.
How to fix the E50 / F50 error
You can attempt a few safe steps before scheduling service:
- Unplug the Washer
Always disconnect the appliance from the power outlet before inspection. - Allow the Machine to Cool
If you’ve just finished a cycle, let the washer rest for 15–30 minutes. Overheating can temporarily trigger the fault. - Check Drum Movement
Rotate the drum by hand. If it spins smoothly, the issue is likely electrical rather than mechanical. - Inspect Visible Wiring
Look for damaged or disconnected wires near the motor area (only if accessible without removing panels). - Restart the Washer
Plug the unit back in and try running a short cycle. Sometimes, the error clears after a full power reset.
If the error returns, professional testing is required. A technician will use diagnostic tools to measure motor resistance, inspect the tachogenerator, and evaluate the control board.
⚠️ Warning: Attempting to remove or replace motor components without experience can cause electric shock or void your warranty.
When to call a technician
Contact a Bosch washing machine repair near me if:
- The washer fails to spin or start after a reset.
- You notice burning smells, sparks, or unusual grinding noises.
- The E50 or F50 error reappears during every cycle.
- You’re unsure how to test electrical parts safely.
Qualified Bosch technicians can accurately pinpoint whether the issue lies in the motor, tachogenerator, or control module—and install genuine replacement parts to restore safe operation.
Conclusion
The Bosch washer E50 error and Bosch washer F50 error indicate a motor or tachogenerator malfunction, disrupting the washer’s ability to spin correctly.
While simple resets and inspections can help rule out temporary faults, most cases require professional service to replace or repair internal components.
For peace of mind and lasting results, contact a certified Bosch washing machine repair service near you to fix the problem safely and efficiently.
