What Does Error Code E42 Mean on an Electrolux Washing Machine?
Check that no clothing or debris is caught in the door seal or latch, firmly close the door until you hear a click, then restart the cycle — if the lock engages correctly the error will clear (takes about 5 minutes).
Fault description
Error code E42 is the Electrolux washing machine's way of telling you that something has gone wrong with the door lock system. The machine uses an electronic door interlock to confirm the door is fully closed and latched before it will allow a wash cycle to begin or continue. When the control board cannot receive a successful signal from that lock, it throws E42 and halts operation.
In practical terms, you may find the machine refuses to start, stops mid-cycle, or displays E42 immediately after you press the start button. The drum will not spin and the door may or may not release, depending on where in the cycle the fault occurred. In most cases the door lock itself is the culprit, but wiring, the control board, or even a simple obstruction can produce the same code.
Causes
- Obstruction in the door latch or seal — A small item of clothing, a coin, or a build-up of detergent residue can prevent the door from closing fully. If the latch cannot engage completely, the interlock never receives the signal it needs and E42 is triggered.
- Worn or failed door interlock — The door interlock is an electromechanical component that physically locks the door and sends a confirmation signal to the control board. Over time the internal contacts or the bimetallic strip inside the interlock wear out, causing intermittent or permanent failure.
- Damaged or misaligned door hinge or strike — If the door hinge has sagged or the plastic door strike has cracked, the latch may not line up correctly with the interlock housing. The door can appear closed while the latch is not fully seated.
- Wiring fault between the door interlock and control board — The wires connecting the interlock to the main control board can chafe, corrode, or develop a loose connector over time. A break or poor connection in this circuit will prevent the lock signal from reaching the board even if the interlock itself is fine.
- Control board fault — In less common cases the main control board itself fails to send the activation signal to the interlock or misreads the return signal. This is usually only suspected after the interlock and wiring have been ruled out.
Step-by-Step Fix
- 1
Power cycle the machine
Switch the machine off at the mains socket and leave it unplugged for two minutes. This clears any temporary software glitch that may have caused a false E42 reading. Plug back in, select a short cycle, and press start to see if the error returns.
- 2
Inspect the door seal and latch area
Open the door and run your fingers around the entire rubber door seal, feeling for trapped socks, coins, or compacted fluff. Check the plastic door strike — the small protruding tab on the door — for cracks or deformation. Clean away any detergent residue around the latch with a damp cloth.
- 3
Check the door closes and clicks firmly
Push the door shut with a firm, deliberate push until you hear and feel a definite click. A gentle push is sometimes not enough to fully seat the latch. If the door feels loose or rattles, the hinge may have dropped and will need adjustment or replacement.
- 4
Inspect the door hinge for sagging
Open the door fully and look at the hinge on the left side. If the door droops noticeably when open, the hinge pin or hinge bracket has worn. A sagging door causes the strike to miss the interlock slot, preventing a proper lock. Replacement hinges are a straightforward DIY repair on most Electrolux models.
- 5
Test the door interlock
Unplug the machine before doing anything further. Remove the door seal retaining band and fold back the seal to access the interlock unit, which is clipped into the front panel. Disconnect the wiring plug and use a multimeter set to continuity or resistance mode to test across the interlock terminals according to your model's wiring diagram. A reading outside the expected range confirms the interlock has failed and needs replacing.
- 6
Check the wiring harness to the interlock
With the interlock accessible, inspect the wiring connector for corrosion, bent pins, or wires that have pulled out of the plug. Gently tug each wire at the connector to check for hidden breaks. Reseat the connector firmly and check whether the error clears before ordering parts.
- 7
Replace the door interlock
If testing confirms the interlock has failed, fit a replacement part that matches your model number. Clip the new interlock into the front panel housing, reconnect the wiring plug, refit the door seal and retaining band, then run a short test cycle to confirm the error has cleared.
Affected models
Select your model to see its full troubleshooting page.
When to call a service technician
If you have replaced the door interlock and checked the wiring harness but E42 continues to appear, the fault is likely inside the main control board. Control board diagnosis requires specialist test equipment and the board itself is an expensive component — misdiagnosing it is a costly mistake. At this point it is sensible to stop and book a visit from a qualified service technician.
You should also call a service technician immediately if the door is completely stuck shut and you cannot release it manually using the emergency pull-cord at the bottom of the machine, or if you notice any burning smell or scorch marks near the door lock area, as these indicate a more serious electrical fault.
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Frequently Asked Questions
Can I still use my Electrolux washing machine while it shows E42?
No. When E42 is active the machine will not start or will stop mid-cycle because it cannot confirm the door is safely locked. Running a washing machine with a faulty door lock is a safety risk, as the door could potentially open during a spin cycle. Resolve the fault before using the machine again.
How do I open the door when E42 is displayed and the door is stuck?
Most Electrolux washing machines have an emergency door release cord located behind the kick panel at the bottom front of the machine. Remove the kick panel, locate the small coloured pull-cord near the pump filter, and pull it firmly downward. This mechanically releases the door lock. Always unplug the machine before attempting this.
How long does a door interlock last on an Electrolux washing machine?
A door interlock typically lasts between five and ten years under normal use, though this varies depending on how frequently the machine is used and whether the door is closed gently or slammed. Machines used for large households with multiple daily cycles will wear the interlock faster.
Is E42 the same fault as E41 on an Electrolux washing machine?
They are related but distinct. E41 generally indicates the door is open or not detected as closed, while E42 specifically points to a failure within the door lock mechanism itself. In practice both codes often lead to inspecting the same components — the interlock, the door strike, and the wiring — but E42 more strongly suggests the interlock has an internal fault.
How much does it cost to replace an Electrolux door interlock?
The interlock part itself typically costs between £15 and £40 depending on the model. If you are comfortable with basic appliance repair it is a DIY-friendly job that takes around 30 to 45 minutes. A service technician call-out will add labour costs on top of the part price, so it is worth attempting the replacement yourself if you are confident doing so.