Dishwasher E15 Errors Explained

On Bosch dishwashers, E15 indicates a water leakage condition. Bosch also describes E15 as the leakage protection system being activated after water is detected in the base of the dishwasher. Similar BSH-family dishwashers may use E15 or F15 for a water-protection fault, but the exact behaviour can vary by model, so the appliance manual should always be checked.

What E15 actually detects

E15 is a safety warning rather than proof that one particular component has failed. On supported Bosch dishwashers, the appliance has detected a leakage condition or water in the base and activated its water-protection system. The dishwasher may stop the programme and the drain pump may continue running as part of that protection response.

Common causes

  • Visible damage, kinking, or leakage from an accessible water hose
  • A leaking hose connection or water connection
  • Water escaping around the dishwasher door or seal
  • Excessive foaming caused by unsuitable or excessive detergent
  • An internal leak that requires professional diagnosis

Safe first checks

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Safety warning

Do not tilt or dismantle a dishwasher displaying E15. Water may be present close to electrical components, and moving the appliance can spread the leak or create additional hazards. If water is present around electrical connections, the plug, or socket, avoid touching wet electrical equipment and isolate the electrical supply only if it is safe to do so.

When to stop and call a professional

If no simple external cause such as visible hose damage can be identified, arrange professional diagnosis. Bosch UK recommends an engineer when the E15 leakage fault is not visibly identifiable. Internal leak detection, base-tray access, pumps, valves, wiring, seals, and control-system repairs should be left to a qualified appliance repair professional.

How this information is researched

Publisher: Error Code Lookup Editorial Team. Error Code Lookup is an independent appliance-information resource and is not affiliated with appliance manufacturers. Guidance is written in our own words and reviewed with safety boundaries in mind.

Last reviewed: 2026-08-07

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Frequently asked questions

What does Bosch dishwasher E15 mean?

Bosch states that E15 means there is a water leakage condition. Bosch also describes the leakage protection system as being activated when water is detected in the base of the dishwasher.

Why does the dishwasher pump keep running with E15?

On some models the leakage-protection system can keep the drain pump operating as part of its flood-protection response. Do not repeatedly reset the dishwasher simply to stop the pump.

Should I tilt my dishwasher to clear E15?

No. Tilting may temporarily move water away from the detection system without fixing the leak that caused it. It can also move water around internal electrical areas. Use only safe external checks and arrange professional diagnosis if the cause is not visible.

Can I fix E15 myself?

Limit troubleshooting to safe external observations such as checking for visible leakage and accessible hose damage. Do not remove panels or access the dishwasher base. If the cause is not obvious externally, professional diagnosis is recommended.

Does E15 always mean the same part has failed?

No. E15 identifies a leakage or water-protection condition rather than proving that a particular pump, seal, hose, valve, or control component has failed. The underlying cause requires diagnosis.