Bosch Dishwasher E23 Code: Meaning & Fixes
- Meaning
- Drain pump fault: the drain pump is blocked, clogged or faulty.
- Can I fix it?
- No, call a technician
- Seen on
- Bosch dishwashers that show two-digit E codes.
Unlike E24 and E25, Bosch gives no home fix for E23: it points to the drain pump itself, and Bosch’s advice is to reset the dishwasher and contact service if the code stays. One check is still worth doing first, with the power off: a piece of glass or other debris jammed in the pump can stop it.
Try this first
- Switch the dishwasher off at the breaker for about 30 seconds, then turn it back on.
- With the power off, remove the filter and check under the drain pump cover for glass or debris.
- If E23 comes back, close the water supply and contact Bosch service.
What causes E23
| Cause | What you notice | What to check |
|---|---|---|
| Object jammed in the drain pump | Humming or buzzing, no drain | Under the pump cover below the filter |
| Failed drain pump | E23 returns with a clear pump | Needs a technician |
| Wiring or control fault (less common) | E23 persists after the pump is replaced | Needs a technician |
Fix it step by step
Tap a step number to tick it off as you go. Ticks stay on this device.
-
Reset the power
Switch the dishwasher off at the circuit breaker for about 30 seconds, then switch it back on and run a short cycle.
-
Check the pump for a blockage
If E23 returns, cut the power again. Take out the lower rack and the filter, scoop out standing water, then pry the pump cover up with a spoon, grip the crosspiece and lift it diagonally inward and out. Remove any debris and press the cover back until it clicks.
Safety: Sharp debris such as glass fragments can collect here. Let hot water cool first.
-
Test once, then call
Refit the filter, restore power and run a short cycle. If E23 shows again, turn off the water supply and contact Bosch service.
When to call a technician
Call Bosch service or a technician if E23 comes back after a reset and a clear pump. Bosch treats it as a pump fault that needs a trained technician: the pump or its wiring has to be tested and usually replaced.
Questions people ask
Can I fix a Bosch E23 code myself?
Only if something is jammed in the pump. Bosch's own guidance is to reset the dishwasher and contact service, because E23 points to a faulty pump rather than a blocked drain path.
What's the difference between E23 and E24 or E25?
E24 and E25 mean the drain path is blocked: hose, air gap or the pump cover area, and Bosch gives home fixes for them. E23 means the drain pump itself has a fault.
Is it safe to keep using the dishwasher with E23?
It won't drain properly, so water stays in the tub. Turn it off, close the water supply and book a repair.