Bosch Washing Machine Error F43
⚡ Quick Answer: The Bosch washing machine error F43 indicates a motor drive unit malfunction, often resulting in the drum failing to turn or rotating with difficulty.... ⚠️ Difficulty Varies
What Does Error F43 Mean?
The Bosch washing machine error F43 indicates a motor drive unit malfunction, often resulting in the drum failing to turn or rotating with difficulty. This issue may be accompanied by unusual noises, and the washing machine may stop mid-cycle. Common causes include motor rotation failure, blocked drum, worn motor components like carbon brushes, or electrical connection issues. To troubleshoot, check for overloads or foreign objects obstructing the drum. If problems persist, professional inspection and repair of motor or electronic components may be necessary.
Common Symptoms:
- Drum does not turn or turns with difficulty or loud noise during cycle
- Washing machine may stop mid‑cycle with F43 displayed
- Machine may struggle, jump, or make unusual sounds when attempting to spin
Possible Causes
- Motor rotation failure or blocked drum (medium)
- Motor component wear (carbon brushes) or electrical connection issue (medium)
- Overloaded load preventing drum rotation (medium)
How to Fix Error F43
DIY Fix Check for overload and foreign obstruction
- Turn off and unplug the washing machine.
- Open the drum and remove some laundry to reduce load.
- Try rotating the drum by hand to check for smooth movement.
- Listen for unusual noises that may indicate trapped objects.
Technician Only Inspect and repair motor and drive components
- Disconnect power and remove back panel to access motor and drive system.
- Check and replace worn carbon brushes on the motor if necessary.
- Inspect motor wiring and connections for damage or loose contacts.
- Test the motor and tachogenerator (speed sensor) for proper operation.
- Replace faulty motor or electronic control board as needed.
Parts needed: Motor carbon brushes, Motor assembly, Motor wiring harness, Tachogenerator, Control board (if diagnosed)
- If the drum still will not turn after reducing load or removing obstructions
- If you detect burning smells, sparks, or severe noise from the motor area
- If internal component inspection indicates motor or electronic faults beyond basic cleaning
Next step
Choose the next step for F43
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
- Typical part-only price
- $20 - $120
- DIY difficulty
- Medium
- Estimated time
- 30-90 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Main Control Board
The central brain of the appliance that controls all components, cycles, and timings.
Model-compatible Washing Machine parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Washing Machine Cleaner Tablets
Routine tub-cleaning supplies for residue and odor control. They do not repair a mechanical, drainage, or electronic fault.
Braided Washer Inlet Hoses
A maintenance replacement option for visibly worn external fill hoses. Verify thread size, length, and hot/cold connection requirements.
Washer Drain Hose Holder
Helps secure an external drain hose at the standpipe. It does not correct an internal pump or control fault.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| wattage | 500W |
|---|---|
| component | Motor Drive Unit |
| resistance | 1-5 ohms |
| part_number | Bosch 00167777 |
| voltage_rating | 120V AC |
Common Questions
What does F43 error mean on bosch washing machine?
F43 indicates a malfunction in the motor drive, resulting in the drum not turning or unusual noises.
Can I fix bosch washing machine F43 error myself?
Yes, you can check for overloads and obstructions in the drum as a first step.
How much does it cost to fix F43 error?
Repair costs vary; motor brushes are low cost, while motor or control board replacements can be more expensive.
When should I call a technician for F43?
Call a technician if the drum won't turn after checking for obstructions or if you notice burning smells or severe noises.
Sources & References
Data last verified: 2026-07-25
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