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Bosch Dishwasher E23 Error Code
Drain pump fault. Here is what it means and how to clear it, easiest fix first.
The control has found a problem with the drain pump: it may be jammed, clogged, or failing electrically. Bosch treats this as a service code rather than a simple clean-out.
Newer US models show E6101 for the same fault. Coolblue's Bosch and Siemens guide also lists E23 as a fault that needs service.
How to fix Bosch E23
Clean the filter and check the pump cover
Switch off the breaker or unplug the unit. Remove and rinse the filter, and check that the pump cover underneath is in place and not jammed with debris, as described for E25.
Reset the dishwasher at the breaker
Switch off the dishwasher's circuit breaker, wait about 30 seconds, then switch it back on. Run a short cycle with the dishwasher empty and watch whether the same code comes back. A code that clears and stays away was likely a one-time glitch.
When to call a technician
If E23 returns after a reset, call Bosch support or a technician. Testing and replacing the drain pump is a technician job.
Parts that commonly cause E23
- Drain pump
Order parts by your exact model number so they fit.
Other Bosch dishwasher codes
- E15Water detected in the base (leak protection)
- E24Dishwasher is not draining (blocked drain path)
- E25Drain pump blocked or pump cover loose
- E22Filter is blocked
- E16 / E17Water can't enter the dishwasher
- E18Water level too low
- E14Flow meter or filling problem
- E09Heating fault (meaning varies by region)
- E27Household power supply too low
- E12Limescale buildup in the heat pump
- E21Heat pump blocked
- E01-E05Control board or electronics fault
- E06Door sensor circuit fault
- E19Detergent dispenser fault
- E07 / E10CrystalDry (zeolite) drying fault
- H01Delay start is set (not an error)
Frequently asked questions
What does E23 mean on a Bosch dishwasher?
The control has found a problem with the drain pump: it may be jammed, clogged, or failing electrically. Bosch treats this as a service code rather than a simple clean-out.
Can I fix Bosch E23 myself?
Only the basic checks. You can safely try the steps above, but E23 usually points to a part or fault that needs a technician.
What if E23 keeps coming back?
A code that returns after a reset and the checks above usually means a part is wearing out. Note when E23 appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.
Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.