What to check, in order
- Turn off the water
Close the tap or valve that feeds the dishwasher, usually under the sink.
- Switch it off, but leave it plugged in
Use the on/off button. The anti-flood system needs power to keep working.
- Look for the leak
Check around the base and along the hoses for leaks, kinks or damage. A visibly damaged hose can be replaced as a spare part, but unplug the dishwasher first: the AquaStop hose contains an electric valve and power cables.
When to call an engineer
Bosch and Siemens say to turn off the water and call customer service, and Bosch advises against fixing it yourself for health and safety reasons. Bosch UK makes one exception: a visibly damaged hose, which you can replace.
A repair visit will usually check the hoses, seals and pump housing to find where the water is coming from.
- Note the model and serial number. They're on a label on the edge of the door or the side of the tub.
- Write down the exact code, and what the appliance was doing when it appeared.
- Check whether it's still under warranty. If it is, the repair may cost you nothing.
Good to know
- You'll find advice online to tip the dishwasher back to empty the base and clear the code. Bosch advises against fixing E15 yourself, and tipping only empties the base: the warning clears, the leak doesn't.
Parts people end up buying
Only if the checks above point to a part. Match it to your model number first: it's on a label on the edge of the door or the side of the tub.
- AquaStop inlet hoseSearch on Amazon
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Quick answers
What does the Bosch E15 error code mean?
Water has collected in the base of the dishwasher, and the anti-flood system (AquaStop) has stopped the programme to keep it from reaching your floor.
Can I fix Bosch E15 myself?
Tricky (10 minutes of checks). Start with: turn off the water; switch it off, but leave it plugged in; look for the leak. Bosch and Siemens say to turn off the water and call customer service, and Bosch advises against fixing it yourself for health and safety reasons. Bosch UK makes one exception: a visibly damaged hose, which you can replace.
Is Bosch E15 worth repairing?
Deal with it now. Don't keep running it. The repair is often small, a hose or a seal, but a leak left alone damages the machine and the floor underneath, and that costs far more.
Checked against
- Bosch UK: dishwasher E15
- Bosch US: dishwasher E15
- Bosch South Africa: dishwasher E15
- Siemens: dishwasher error codes
Last reviewed October 2026. Manufacturers update their pages, and your manual is the final word. Spotted a mistake? Email contact@appliance-error-codes.com.