Error code
Bosch Dishwasher Error Code E15
Last updated: 2 April 2026
Quick answer
E15
Leak protection system has been triggered
First safe action
Switch the dishwasher off and isolate the power supply.
Meaning
Bosch dishwasher error code E15 usually indicates water has collected in the base tray, causing the anti-flood protection system to stop the machine.
Likely causes
- Internal leak
- Overflow from oversudsing or a drainage issue
- Water in the base tray activating the float switch
Safe first checks
- Switch the dishwasher off and isolate the power supply.
- Do not keep restarting the appliance if there are signs of water leakage.
- Check for obvious leaks around the door seal, hose connections, or beneath the unit if it is safe to do so.
How to reset
- Only restart the dishwasher once the source of the leak has been checked.
- If E15 returns, stop using the appliance and arrange professional repair.
When to call an engineer
If there is standing water in the base, signs of repeated leaking, or the code returns after drying out, a repair engineer should inspect the unit.
Safety warning
Disconnect the dishwasher from power before checking anything accessible, and avoid using it if water may be reaching electrical parts.
Useful hub links
Relevant guides
Frequently asked questions
Can I tip a Bosch dishwasher to clear E15?+
Some owners try this, but it does not fix the underlying leak. Repeated use without finding the cause can lead to further damage.