- Appliances
- Dishwashers
E23
Bosch dishwasher E23: drain-pump fault
Evidence linked to this decision
View source: Bosch US dishwasher error codesRisk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
High
Quick answer
E23 means the drain pump is blocked, restricted or faulty. Let the water cool, isolate power and clean only the filter area described in the exact manual.
Safety first
Stop and check this first
- Do not reach into standing water or an unseen pump cavity. Stop for leaks, hot water, glass, repeated humming or electrical odour.
Safe checks you can perform
- Stop, cool and isolate the dishwasher
- Clean only the documented accessible filter
- Inspect the external drain route
Leave these tasks to a qualified professional
- Do not attempt this professional task: Trace the complete drain system
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Trace the complete drain system
What they doService should inspect the sump, pump cover, impeller housing, check valve, hose, sink connection, pump and control.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Stop, cool and isolate the dishwasher
Cancel the programme, wait for residual water to cool and disconnect the dry electrical supply before opening the door.
Do not reach into standing water or an unseen pump cavity. Stop for leaks, hot water, glass, repeated humming or electrical odour.
Evidence: Bosch US dishwasher error codes
Clean only the documented accessible filter
Remove and rinse the filter as the model manual shows, reseat it correctly and do not reach into the pump or handle unseen debris.
Do not reach into standing water or an unseen pump cavity. Stop for leaks, hot water, glass, repeated humming or electrical odour.
Evidence: Bosch US dishwasher error codes
Inspect the external drain route
Look for a crushed hose or blocked sink connection without detaching plumbing, then stop if water remains or the code returns.
Do not reach into standing water or an unseen pump cavity. Stop for leaks, hot water, glass, repeated humming or electrical odour.
Evidence: Bosch US dishwasher error codes
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Virtual technician
Does E23 still appear after these checks?
This guided flow uses the exact code and your answers to choose a test, an expected result and the next branch.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- Bosch
- Product type
- Dishwashers
Known code variants
- Balay dishwasher E23
- Balay E23
- Bosch dishwasher E23
- Bosch E23
- Bosch E23 error
- Bosch E23 lavavajillas
- Bosch Geschirrspüler Fehler E23
- code erreur E23 lave-vaisselle Bosch
- code erreur E23 lave-vaisselle Siemens
- codice E23 Bosch
- codice E23 Siemens
- código E23 Bosch
- código E23 Siemens
- E23
- E23 Bosch dishwasher
- E23 lavavajillas Balay
- E23 Siemens dishwasher
- E:23
- erreur E23 Bosch
- erreur E23 Siemens
- Error E23 Balay
- error E23 lavadora Siemens
- error E23 lavavajillas Bosch
- error E23 lavavajillas Siemens
- errore E23 lavastoviglie Bosch
- errore E23 lavastoviglie Siemens
- F23
- F:23
- Fehlercode E23 Bosch
- Fehlercode E23 Siemens
- lavadora Siemens E23 fuga de agua
- Siemens dishwasher E23
- Siemens E23
- Siemens E23 error washer
- Siemens E23 lavadora
- Siemens Geschirrspüler Fehler E23
- Siemens washer E23 leak
- Siemens washing machine E23
What it means
Bosch's official United States dishwasher table associates E23 with a drain-pump problem. This page is restricted to Bosch dishwashers: the same code on a washer, dryer or another appliance can mean something else, and the exact E-number and manual decide compatibility.
Warnings and stop conditions
- Mediumsource verified
Do not reach into standing water or an unseen pump cavity. Stop for leaks, hot water, glass, repeated humming or electrical odour.
Evidence: Bosch US dishwasher error codes
Symptoms and causes
Probable causes · in order
- The accessible filter or drain path is restrictedConfirmed
Food debris, a kinked hose, a poor sink connection or a mis-seated cover can slow or stop drainage.
Evidence: Bosch US dishwasher error codes
- The drain pump, check valve, harness or control is faultyPossible
A clear filter does not rule out an internal hydraulic or electrical drain fault.
Evidence: Bosch US dishwasher error codes
Sources and technical references
- 1
Bosch US dishwasher error codes
BSH Hausgeräte GmbH · 2026 · official_doc
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