Dishwasher leaks usually come from the door seal, the detergent dispenser overfilling, or hose connections — check the front and hoses first.
Likely causes, ranked
- Wrong or too much detergent Most likely — Washing-up liquid floods the machine with foam and leaks from the door.
- Door seal damage Likely — Tears or debris in the seal let water out at the door.
- Loose hose connections Likely — Drain and inlet hose nuts work loose over time.
- Internal leak into the base pan Less likely — Triggers flood detection (Bosch E15).
First checks
- Confirm you use dishwasher detergent only — never washing-up liquid.
- Wipe the door seal and check for tears or trapped debris.
- Hand-tighten hose nuts at the back.
- Dry the floor completely, run a cycle, and watch where water first appears.
Safety
Unplug before checking hoses. Keep water away from the machine's electrical connections at the back.
Call a professional when…
Call a professional if the leak is internal or the machine shows a flood code — base pan and seal work is engineer work.