LG washer dryer DE1 error code
What DE1 means on an LG washer dryer
Door lock fault: the door is not closed properly or will not lock.
Meaning checked by NAC's engineers, 9 November 2026.
What our engineers say
When an LG washer dryer shows DE1, it is telling you there is a door lock fault: either the door is not closed properly or it will not lock. You may also find that the door won't open, and the machine will not start a cycle until the problem is cleared.
Engineers sometimes find that the door lock itself has failed and needs replacing. Now and then a misshapen rubber seal around the door opening stops the door shutting properly, so the machine cannot lock it. Engineers also sometimes find that the fault lies with the machine's main control board rather than the lock, even after a new lock has been fitted.
An engineer will usually check whether the door shuts and locks each time, look over the seal and the lock for damage, and test the wiring and power reaching the lock. Depending on what they find, they replace the door lock, the door seal or the main control board. These parts often have to be ordered, so the repair may be finished at a second visit.
Written by our engineers from NAC's own jobs.
Faults this code turns up with
What our engineers found and fixed for each, from NAC's own repair records.
What we fixed. We'll add what our engineers found, the parts they fitted and what customers typically paid once enough of these repairs are confirmed. How we work out our figures.
Before you check anything yourself
- Switch the washer dryer off and unplug it, or turn it off at the isolator switch, before you touch anything. Our guide to safely isolating an appliance walks you through it.
- An error code tells you where to look, not that it's safe to take the washer dryer apart. Don't remove panels or covers to get at the parts it points to: that's an engineer's job.
- If it involves the mains supply, sealed parts, or you're not confident at any point, stop and book a qualified engineer rather than risk injury or further damage.
Rather leave it to us?
- Fixed-price quote before any work starts
- Same or next-day visits where available
- UK-wide engineer coverage