The Bosch Dishwasher code E23 means: Drain pump fault - the drain pump is blocked, clogged, or has failed, leaving standing water in the tub after a cycle.
Difficulty: Moderate — DIY-able with basic tools
Typical repair cost: approximately $250 (parts + labor).
What to do, step by step
- Cancel the cycle and reset power at the breaker.
- Remove the filter and check the drain pump cover and impeller for debris.
- Check the drain hose and sink connection for clogs.
- Replace the drain pump if the code returns.
Video walkthrough
Is the repair worth it?
Before spending money, run the numbers: if the repair quote is more than about 30% of what a new dishwasher costs — especially on an older unit — replacement is usually the smarter call.
Check your quote with our free calculator →
Other Bosch error codes
Decoding a different code? Our error code lookup tool covers 200+ codes across all major brands.
For Repair Technicians
Turn this code into a professional quote in 60 seconds
FixFlow — error-code diagnosis, repair-vs-replace math, branded PDF quotes.
Try FixFlow Free →
Safety first: unplug the appliance (and shut off gas where applicable) before any inspection. If you smell gas, leave the area and call your gas provider.