Blomberg dishwasher E01 error code
What E01 means on a Blomberg 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 Blomberg dishwasher shows E01, its anti-flood protection has switched on because water has been detected in the base of the machine. You may notice it alongside the dishwasher not draining, or beeping and flashing lights.
What engineers sometimes find is that water has ended up in the base because the dishwasher couldn't drain, so it overflowed. That can come from something small lodged in the drain pump and stopping it turning, from a drain pump that has failed, or from a blockage in the plumbing the dishwasher drains into. Now and then a seal has come loose at the bottom and is letting water escape.
An engineer will usually clear the water from the base, run electrical checks and a test cycle, and watch for leaks. They'll listen to the drain pump and test it. Where it's simply blocked, clearing it and refitting it is often enough. A loose seal can be put back in place. If the pump has failed, a new one may have to be ordered and fitted on a second visit, with any blockage in the drain plumbing cleared at the same time.
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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