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Repair guide · Error code

Dishwasher E15 Error: Leak Protection Explained

E15 on a Bosch, Siemens or Neff dishwasher means the leak protection has been triggered. Water has collected in the base tray under the machine. Here's what that means and how it should be fixed.

Technician checking a built-in dishwasher for a leak

How the leak protection works

At the bottom of the dishwasher there is a plastic base tray with a small polystyrene float. If water leaks inside the machine, it collects in this tray, the float rises and presses a switch. The dishwasher then shows E15, stops washing and runs the drain pump to protect your kitchen floor. On some models the pump keeps running until the tray is dry.

Common causes of E15

CauseNotes
Too much foamHand washing liquid or too much detergent creates foam that overflows. Very common.
Leaking pump or heat pump sealSeals harden with age and limescale.
Cracked or loose internal hoseWater escapes inside the base.
Door seal or lower door gasketWater runs down inside the door frame.
Water softener or brine container leakSalt container cap missing or cracked.

What you can do safely

  1. Switch off the dishwasher at the plug or isolator.
  2. Make sure only dishwasher tablets or powder are used, never hand washing liquid.
  3. Check the salt container cap is screwed on tightly.
  4. Leave the machine switched off for a day or two so the base tray can dry, then try a short program.
  5. If E15 returns, there is a real leak that needs repair.

Tilting the dishwasher to pour water out of the base hides the problem but doesn't fix it. If the leak is still there, it will return, and water may soak into your kitchen cabinets.

How we repair E15

Our technician removes the dishwasher from the cabinet if needed, opens the base, finds where the water is coming from and replaces the leaking seal, hose or component. We then dry the base, reset the float and run a test cycle while watching for leaks. The inspection is AED 75, and every part we install carries a 1-year warranty. Learn more on our dishwasher repair page.

Questions

Quick answers

Why does my dishwasher pump keep running with E15?

The leak protection runs the drain pump to stop flooding. Switch off the machine and book a repair.

Can washing-up liquid cause E15?

Yes. Even a small amount of hand washing liquid creates a lot of foam that can overflow into the base.

Is E15 the same on all brands?

E15 is used mainly by Bosch, Siemens and Neff. Other brands use different codes for leaks, such as AE on some LG models.

Book a repair

Tried the checks and still stuck?

Send us the appliance, brand and your area on WhatsApp, any time of day or night. Inspection is AED 75, and every part we fit has a 1-year warranty.