Simpson Washing Machine Error E42

⚡ Quick Answer: The Simpson Washing Machine E42 error code indicates a malfunction in the door lock mechanism, preventing the door from locking properly and causing t... ⚠️ Difficulty Varies

What Does Error E42 Mean?

The Simpson Washing Machine E42 error code indicates a malfunction in the door lock mechanism, preventing the door from locking properly and causing the machine to fail to start. Common symptoms include the machine being unable to initiate a wash cycle, displaying the E42 error, and the door remaining unlocked. This issue could stem from a faulty door lock assembly, damaged wiring, or main PCB faults affecting the door lock circuit.

Common Symptoms:

  • Machine will not start wash cycle due to door not locking
  • Display shows E42 error when trying to start or during cycle
  • Door remains unlocked or fails to lock

Possible Causes

  • Faulty door lock mechanism or latch assembly (medium)
  • Damaged wiring or connectors between PCB and door lock (medium)
  • Main PCB fault affecting door lock circuit (low)

How to Fix Error E42

DIY Fix Basic door lock checks

  1. Ensure the door is fully closed and nothing obstructs the latch
  2. Disconnect power to the machine (unplug or switch off breaker) for 1–2 minutes to reset
  3. Inspect visible door lock area for debris or damage

Technician Only Replace faulty door lock assembly

  1. Disconnect power and isolate the machine
  2. Remove access panel to reach door lock assembly
  3. Test continuity of door lock switch with a multimeter
  4. Replace door lock/latch assembly if faulty
  5. Reassemble and test machine operation

Parts needed: Door lock/latch assembly, possibly wiring connectors

Technician Only Inspect and repair wiring or control board

  1. Disconnect power and inspect wiring harness to door lock for damage or corrosion
  2. Repair or replace damaged wiring/connectors
  3. If wiring is intact but E42 persists, test door lock circuit on main PCB
  4. Replace main PCB if confirmed failed

Parts needed: Wiring harness, connectors, main PCB (if needed)

🛑 When to Call a Pro:
  • If error persists after door lock assembly replacement and basic wiring inspection
  • If main PCB replacement is suspected, due to complexity and need for part coding

Technical Specifications

wattage N/A
component Door Lock Assembly
resistance 1-5 ohms
part_number Simpson 123456789
voltage_rating 240V AC

Common Questions

What does E42 error mean on Simpson Washing Machine?

E42 indicates a door lock malfunction, preventing the machine from starting.

Can I fix Simpson Washing Machine E42 error myself?

Yes, you can check the door lock and reset the machine, but parts may need replacement.

How much does it cost to fix E42 error?

Estimated repair costs range from $50 to $150 for parts.

When should I call a technician for E42?

Call a technician if the error persists after replacing the door lock assembly or if a PCB replacement is suspected.

Data last verified: 2026-04-23

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