Bosch Dishwasher E23 Error Code
Meaning: The drain pump has an electrical winding resistance issue. The pump motor may be failing even though it is not physically blocked.
Risk: Medium–High. Standing water may remain in the dishwasher. Not an immediate safety hazard, but the dishwasher cannot drain. Professional repair needed.
First safe checks:
- Turn off the dishwasher at the breaker for at least 30 seconds, then restore power.
- Check the drain filter and pump area for debris (to rule out E24/E25).
- Run a cycle to see if E23 returns.
Call a technician if:
- E23 returns after a power reset.
- The drain pump makes no sound or buzzes without draining.
- The pump motor or electrical connections need testing.
Common causes
- Drain pump motor winding resistance issue
- Worn drain pump bearings
- Corroded pump electrical connections
- Control board not delivering correct power to the drain pump
Can you reset it?
Yes, with conditions. A power reset may clear a transient fault. If E23 returns, the drain pump needs testing and likely replacement.
Safe checks before calling a technician
- Turn off the dishwasher at the breaker for at least 30 seconds, then restore power.
- Check the drain filter and pump area for debris (to rule out E24/E25).
- Run a cycle to see if E23 returns.
When to call a technician
- E23 returns after a power reset.
- The drain pump makes no sound or buzzes without draining.
- The pump motor or electrical connections need testing.
- Standing water remains after every cycle.
Related Bosch dishwasher codes
Source confidence
Sources agree on drain pump electrical/winding fault. Distinct from E24 (blockage) and E25 (impeller jam). Professional repair only.
FAQ
What does Bosch dishwasher E23 mean?
E23 means the drain pump has an electrical fault — the motor itself may be failing, not just blocked. Professional repair is typically needed.
What is the difference between E23, E24, and E25?
E23 is an electrical fault in the drain pump motor. E24 is a blockage in the drain filter or loose pump cover. E25 is a physical blockage of the pump impeller. All prevent draining.