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
- The E:30-00 water-protection code is present after the water tap is shut
- There is visible leakage, pooled water, or any electrical moisture risk
- Troubleshooting would require removing panels or accessing the base/protection system
Likely causes
- The newer-generation dishwasher has activated its water-protection system
- Water or a leak condition has reached the protection system's trigger state
- A hose, sump, seal, pump, or other water-carrying component may be leaking internally
- The appliance needs model-specific leak diagnosis after the water supply is isolated
Quick checks, in order
Confirm the full display is E:30-00
On newer Bosch manuals, the complete code can be shown as E:30-00. Record the full display and the appliance E-number so it is not confused with washer E:30 variants or older dishwasher E15 terminology.
Turn off the water tap
Bosch's E:30-00 manual guidance is direct: close the water tap when the water-protection system has activated.
Check externally for active leakage
Inspect only visible hose connections, the floor, cabinet area, and door perimeter without opening the appliance. Do not continue a cycle if water is present.
Call service rather than repeatedly resetting
Bosch's manual tells users to contact Customer Service for E:30-00. Internal leak tracing and base access are not normal user-level checks.
Does the appliance show the newer Bosch E:30-00 water-protection code?
Use the model-specific Bosch manual for that generation, leave the water tap off, and arrange service as the manual instructs.
Use the E15 guidance for that model generation. The underlying safety purpose is similar, but the exact code convention and model documentation differ.
Do not use this page as a substitute. Bosch manuals list adjacent E:31/E:32 codes with different supply/protection details; verify the exact code.
Stop and get qualified help when
- The E:30-00 water-protection code is present after the water tap is shut
- There is visible leakage, pooled water, or any electrical moisture risk
- Troubleshooting would require removing panels or accessing the base/protection system
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 E:30-00 mean?
Bosch's newer dishwasher manuals state that E:30-00 means the water-protection system is activated and instruct the user to turn off the water tap and call Customer Service.
Why does Troublio keep E15 and E:30-00 as separate pages?
Bosch uses different displays across model generations. Keeping the pages separate lets each search match the exact code and model convention while explaining that both belong to the leak/water-protection family.
Can I clear E:30-00 with a power reset?
Bosch's published E:30-00 manual guidance does not present repeated power resets as the remedy. It tells users to shut off the water and contact service because the protection system has activated.