Siemens dishwasher E15 error code
What E15 means on a Siemens dishwasher
Anti-flood protection activated: water detected in the base.
Meaning checked by NAC's engineers, 9 November 2026.
What our engineers say
On a Siemens dishwasher, the E15 code means the anti-flood protection has switched on because water has been detected in the base of the machine. You may also notice beeping or flashing lights, a water supply warning on the display, water collecting in the base, or the dishwasher tripping the electrics.
Engineers sometimes find a leaking seal on the part at the side of the machine where water comes in, or that this whole part needs replacing. They also sometimes find leaking seals on the salt container, a lower door seal that is worn or clogged with grease, a leak from the valve that sends water to the spray arms, or a leak from the pump that heats and moves the water. Now and then the side of the tub has bowed and needs a repair kit. Sometimes only a little water is found and no leak shows up.
An engineer typically clears the water from the base, runs the dishwasher and watches for where the leak comes from. They then replace the faulty seal or part and test the machine again. The part often has to be ordered and fitted 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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