Error codes
Bosch Dishwashers
| Code | What it usually means |
|---|---|
| E15 (E3100 on newer models) | Water detected in the base pan (leak protection tripped). Turn off water; the leak source must be found |
| E24 | Drain blocked: drain hose kinked or clogged, or filter blocked |
| E25 | Drain pump blocked or pump cover loose: clean pump area, reseat cover |
| E22 | Filter blocked: clean filter |
| E18 | Low water level: check inlet hose and that the supply valve is on |
| E09 | Heating fault (heater or heat pump circuit) |
No matching code in this list. Check the label inside the door for your model number, or call or text us and describe what the display shows.
What you can check yourself
0 / 4 checked
- For E24 (drain blocked), check the drain hose for kinks and clean the filter at the bottom of the tub — a clogged filter is the single most common cause.
- For E25 (drain pump blocked), make sure the pump cover at the bottom of the tub is seated properly and clear of debris.
- For E22 (filter blocked), remove and rinse the filter assembly under running water.
- For E18 (low water level), check that the water supply valve is fully open and the inlet hose isn't kinked.
Still not working? A technician can take it from here.
Book a visitWhen to call a technician
Call a technician for E15 after you've shut off the water, and for E09 (heating fault) — both involve components we don't recommend troubleshooting yourself.
Why E24 and E25 look similar but aren't
Both point to drainage, but E24 is a blockage somewhere in the path (hose or filter) while E25 is specifically about the pump itself or its cover not being seated correctly. Checking the filter and hose first covers the more common E24 cause; if the dishwasher still won't drain after that, E25's pump-area check is the next step.
A Southern California angle on Bosch filters
Hard water accelerates how quickly the filter and spray arms pick up mineral buildup, which is part of why E22 and cloudy-dish complaints show up more often here than in areas with softer water. See our guide on hard water and your appliances for the fuller picture.
A note on this brand's codes: Bosch publishes additional codes beyond this list — verify any code not shown here on Bosch's support page before assuming it matches one listed above.
Sources: Bosch owner support — dishwasher error codes, Bosch — E15 self-help, Bosch — E25 self-help
