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
- Ensure the door is fully closed and nothing obstructs the latch
- Disconnect power to the machine (unplug or switch off breaker) for 1–2 minutes to reset
- Inspect visible door lock area for debris or damage
Technician Only Replace faulty door lock assembly
- Disconnect power and isolate the machine
- Remove access panel to reach door lock assembly
- Test continuity of door lock switch with a multimeter
- Replace door lock/latch assembly if faulty
- Reassemble and test machine operation
Parts needed: Door lock/latch assembly, possibly wiring connectors
Technician Only Inspect and repair wiring or control board
- Disconnect power and inspect wiring harness to door lock for damage or corrosion
- Repair or replace damaged wiring/connectors
- If wiring is intact but E42 persists, test door lock circuit on main PCB
- Replace main PCB if confirmed failed
Parts needed: Wiring harness, connectors, main PCB (if needed)
- 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
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.
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
| note | The previous model-independent part specification was removed. Verify the full model number and diagnosis in the manufacturer's official parts catalog before ordering. |
|---|---|
| part_number | None |
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: 2026-07-31
User Comments (0)
Share your experience or solution below.
Please login to post a comment.
Be the first to comment!