Bosch Washing Machine Error E42
⚡ Quick Answer: The Bosch washing machine error E42 indicates a malfunction in the door lock mechanism. This error can prevent the machine from starting or completing... ✅ DIY Fixable
What Does Error E42 Mean?
The Bosch washing machine error E42 indicates a malfunction in the door lock mechanism. This error can prevent the machine from starting or completing a wash cycle due to the door not locking properly. Symptoms may include the cycle stopping early with the door locked, the washer being unable to start, or the door remaining locked after a cycle. Inspecting the door closure and lock position can help identify if obstructions are causing the issue.
Common Symptoms:
- Cycle stops early with door lock engaged
- Washer unable to start or complete program due to door unlock issue
- Door remains locked after cycle
- Machine displays E42 consistently at start or end
Possible Causes
- Faulty door lock mechanism / latch assembly (medium)
- Control system failure to recognize door locked/unlocked state (low)
How to Fix Error E42
DIY Fix Check Door Closure and Lock Position
- Ensure the door is fully closed and latched before starting cycle
- Inspect door latch area for obstructions (lint, clothing edge, debris)
- Try opening and closing the door firmly before restarting machine
- Disconnect power for 1–2 minutes then reconnect and retry cycle
Technician Only Inspect and Replace Door Lock / Interlock Assembly
- Verify E42 code with diagnostic tool if available
- Test door lock switch and interlock continuity
- Replace faulty door lock assembly or latch mechanism
- Verify control board outputs to the lock circuit and wiring harness integrity
- Test operation after replacement
Parts needed: door lock / interlock assembly, door latch, wiring harness
- If door remains locked and cannot be opened safely
- If replacement of door lock does not clear E42 or if other codes accompany E42
- If there are burning smells or unusual electrical behavior during operation
Next step
Choose the next step for E42
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
Door Lock Assembly
Secures the door shut during operation for safety and signals the control board to run.
- Typical part-only price
- $30 - $75
- DIY difficulty
- Easy
- Estimated time
- 10-20 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.
Door Latch Assembly
Mechanically secures the appliance door and may operate a door-closed safety switch.
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
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.
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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 | N/A |
|---|---|
| component | Door Lock Assembly |
| resistance | 1-5 ohms |
| part_number | 00614549 |
| voltage_rating | 120V AC |
Common Questions
What does E42 error mean on Bosch washing machine?
E42 indicates a malfunction in the door lock mechanism, preventing the washer from starting or completing cycles.
Can I fix Bosch washing machine E42 error myself?
Yes, check the door closure and lock position, ensuring it's fully latched and free from obstructions.
How much does it cost to fix E42 error?
Repair costs range from $50 to $200 for parts, while labor costs may vary.
When should I call a technician for E42?
Call a technician if the door remains locked, replacement doesn't clear E42, or if you notice burning smells.
Sources & References
Data last verified: 2026-07-25
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