Source-checked code index
Bosch dishwashers
error codes
8 currently verified guides. Error-code meaning can vary by model, so each page links to the manufacturer material used for verification.
Fast comparison
Meaning, urgency, and first check
Use the displayed code—not a similar-looking one. Open the full guide before taking apart panels or ordering a replacement part.
| Code | What it means | Urgency | First safe check |
|---|---|---|---|
| E01 | Heat-pump motor circuit faultBosch identifies E01 as a heat-pump motor circuit fault at the main control board. | Service recommended | Switch the dishwasher off. |
| E02 | Main-control relay faultE02 indicates a relay fault in the dishwasher main control board. | Service recommended | Switch the dishwasher off. |
| E03 | Main-control relay faultE03 is another main control-board relay fault listed by Bosch. | Service recommended | Switch the dishwasher off. |
| E04 | Heater-electronics faultThe dishwasher self-test has detected faulty heater electronics. | Service recommended | Switch off the dishwasher. |
| E15 | Water detected in the dishwasher baseThe safety switch detected water in the base and activated the leakage-protection system. | Stop using | Stop the dishwasher. |
| E16 | Water-fill system issueThe dishwasher is having trouble with water entering through the filling system. | Check now | Switch the dishwasher off. |
| E17 | Water-fill system issueE17 belongs to the Bosch water-inflow and filling-system error family. | Check now | Switch the dishwasher off. |
| E18 | Water level or flow is too lowThe dishwasher is receiving too little water or water is not being pumped correctly. | Check now | Check the inlet hose for a kink or damage. |
How to use this index
Copy the display exactly
Spaces, letters, and lookalike characters matter. For example, 5E and SE may be easy to confuse on a segmented display.
Confirm the exact model
Error meanings and access instructions can vary by product family and model revision, even within one brand.
Start with observable checks
A code points to a system. It does not prove which part failed, so compare the symptom before replacing anything.
Full guides
Code-by-code troubleshooting
Each guide separates safe owner checks from conditions that should be left to qualified service.