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

  1. Ensure the door is fully closed and latched before starting cycle
  2. Inspect door latch area for obstructions (lint, clothing edge, debris)
  3. Try opening and closing the door firmly before restarting machine
  4. Disconnect power for 1–2 minutes then reconnect and retry cycle

Technician Only Inspect and Replace Door Lock / Interlock Assembly

  1. Verify E42 code with diagnostic tool if available
  2. Test door lock switch and interlock continuity
  3. Replace faulty door lock assembly or latch mechanism
  4. Verify control board outputs to the lock circuit and wiring harness integrity
  5. Test operation after replacement

Parts needed: door lock / interlock assembly, door latch, wiring harness

🛑 When to Call a Pro:
  • 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

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: 2026-01-16

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