Match the symptom, then work through the safe checks.
1. What best matches what you observe?
2. Complete only the checks that are safe for you.
Show stop conditions
- Any active leak, pooled water, or electrical moisture risk is present
- E15 returns after the appliance has been professionally checked or safely dried
- Access to the base, safety switch, hoses, pump, sump, or electrical components is required
Likely causes
- Water has reached the dishwasher base and triggered the safety switch
- An internal or external leak has activated the leakage-protection system
- Foam, overfill, or another water-management fault has allowed water into the base area
- The exact model has a leak source that requires inspection after the water supply is shut off
Quick checks, in order
Treat E15 as a leak-protection event
Bosch explicitly says E15 means the safety switch detected water in the base. Do not treat it as a normal drain-only or fill-only code.
Turn off the dishwasher water inflow
Follow Bosch's published E15 guidance and close the dishwasher's water supply. If a shutoff valve cannot be operated safely, stop and arrange service.
Look only for external evidence of leakage
Without tilting the machine or removing panels, check the floor, visible supply connection, drain connection, and door area for active water. Protect nearby flooring if needed.
Do not tilt the dishwasher to clear E15
Tilting may move water away from the base sensor without fixing the leak and can move water toward electrical components. Bosch's official user guidance is to shut off water and contact support.
Is E15 accompanied by visible water, recent overfoaming, or a recurring base-leak event?
Leave the water supply off. Avoid further cycles and arrange leak diagnosis before reuse.
Water can be trapped inside the base where it is not externally visible. The safety switch condition still needs model-specific inspection.
Overfoaming can contribute water to the base, but do not assume the problem is solved until the appliance is inspected and remains dry through a proper test.
Stop and get qualified help when
- Any active leak, pooled water, or electrical moisture risk is present
- E15 returns after the appliance has been professionally checked or safely dried
- Access to the base, safety switch, hoses, pump, sump, or electrical components is required
Official support and model manuals
Use the full model number from the rating label. The manufacturer manual is the deciding reference when codes differ by region or product family.
Frequently asked questions
What does Bosch dishwasher E15 mean?
Bosch says E15 means the safety switch detected water in the base and the dishwasher's leakage-protection system has activated.
Should I tilt a Bosch dishwasher to clear E15?
No. That can move the water away from the sensor without correcting the leak and may move water toward electrical parts. Bosch tells users to turn off the water inflow and contact support.
Is Bosch E15 exactly the same display as E:30-00?
They both concern water/leak protection, but Bosch uses different code conventions across generations. E15 is documented on Bosch's US support page; newer manuals can show E:30-00 for an activated water-protection system. Match the exact display and model.