Bosch’s dedicated short-code E22 page identifies a filter blockage. If the correctly matched filter is clear and refitted but the warning returns, confirm the full E-Nr and display with Bosch. Do not transfer that short-code interpretation to every newer long-format code.
Selected Bosch dishwashers code family. Confirm the exact model and displayed characters; similar codes on other appliances are not interchangeable.
Stop and isolate power before permitted user maintenance, and let water cool. Watch for sharp debris. Do not reach blindly into a sump, open electrical panels or use drain-opening chemicals. Stay clear of water near electrical equipment.
Follow the drain path
Check the parts of this route that your manual permits you to access. Note where water flows and where you cannot confirm it. Do not open covers or components that require service access.
| Observed state | Interpretation / next step |
|---|---|
| What the code narrows down | Bosch’s dedicated short-code E22 page identifies a filter blockage. If the correctly matched filter is clear and refitted but the warning returns, confirm the full E-Nr and display with Bosch. Do not transfer that short-code interpretation to every newer long-format code. |
| What it does not prove | A display code is not a verified failed-part or compatibility diagnosis. |
Code-specific checks
Inspect the removable filter safely
Stop, isolate power and let the appliance cool. Follow the manual’s removal method; protect against sharp debris and do not reach blindly below the filter.
Clean and refit as documented
Remove visible debris using the prescribed cleaning method. Ensure the filter locks back into position; do not run a wash without it.
Request clarification if the code persists
Provide Bosch with the E-Nr and code photo. A clean filter with a recurring warning requires further diagnosis rather than repeated aggressive cleaning.
If the warning returns
Filter obstructed → clean and lock in place
Different display format → model verification
Persistent E22 → support/service.
When to stop and get help
Only carry out maintenance permitted in your model’s manual. For service, note the full model number and suffix, displayed code, selected cycle and what happened during the checks. Leave internal wiring, gas components, pumps and safety devices to a qualified professional. A symptom alone does not identify a failed part.
Can I leave the filter out for one wash?
No. Reinstall it correctly before use; removing filtration is not a diagnostic repair.
Sources & references
- Code meaning and permitted user checks. Linked manufacturer code/support section
Based on publicly available manuals, manufacturer support and the references listed here. We have not inspected or tested your appliance. Follow the instructions for your exact model; a guide cannot replace an in-person diagnosis.