Bosch dishwasher E15 error code
What E15 means on a Bosch 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 Bosch dishwasher, E15 means the anti-flood protection has switched on because water has been detected in the base of the machine. You may also notice water collecting underneath, or the dishwasher beeping or flashing its lights.
Engineers sometimes find that the water has come from a worn or leaking seal, such as the seal around the part at the bottom of the tub where water gathers, or the seals around the door. Other times it comes from a leaking pump that heats and moves the water around, or from a drain pump clogged with food and debris. Now and then the cause is simpler: washing-up liquid or the wrong detergent used by mistake, causing heavy foaming, a pipe that has come loose, a blocked spray arm, or a machine that is not standing level.
An engineer will usually look for the source of the water, clear it from the base and run a wash to watch for leaks. Depending on what they find, they may replace worn seals or a faulty pump, refit a loose pipe, clear a blockage or adjust the feet. Where a new part is needed, it 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, with Bosch's own figures where we have enough of them.
What our engineers found and fixed
These figures come from NAC's own repair records: 86 dishwasher jobs our engineers attended where the appliance showed this code in the last 12 months. Here is what they found, what fixed it and what it typically cost.
- Jobs attended
- 86
- in the last 12 months
- Confirmed repairs
- 40
- This is not a success rate. Jobs inside their 60-day window, jobs still being classified, jobs held for review and visits that didn't end in a repair aren't counted.
- Fixed at the first appointment
- 30%
- about 3 in 10 of our repairs
- Typical total paid by customers
- £108 to £263
- including parts and VAT, from 39 repairs
No single cause has enough confirmed repairs behind it yet to show for this code.
About the price. £108 to £263 is the typical total paid by customers, including parts and VAT: the middle half of what customers paid on 39 of these repairs. Repairs paid for by manufacturers and insurers aren't counted, because that work is charged at contract rates. It's a guide, not a quote. Your engineer confirms a fixed price before any work starts.
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
- UK-wide engineer coverage