Neff dishwasher E15 error code
What E15 means on a Neff dishwasher
Anti-flood protection activated: water detected in the base.
Meaning checked by NAC's engineers, 9 November 2026.
What our engineers say
When a Neff dishwasher shows E15, its anti-flood protection has switched on because it has detected water in the base of the machine. You may also notice beeping or flashing lights, a water supply warning, the pump running constantly, or the dishwasher stopping mid cycle or refusing to start.
Engineers sometimes find a leaking seal around the sump at the bottom of the tub, a worn door seal, a blocked water tank at the side of the machine, or a leak from the combined heater and pump unit. Other times the water comes from a blocked drain pump, a waste hose positioned so that water runs back into the machine, or ordinary washing-up liquid used in place of dishwasher detergent.
An engineer will clear the water from the base, track down where it is escaping and run a short cycle to check for leaks. The usual fix is a sump seal repair kit, a new door seal, or a replacement sump, side tank or heater and pump unit. These parts often have to be ordered, so the repair is commonly 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 dishwasher 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 dishwasher 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
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