Bosch dishwasher not draining / E24
Bosch drain troubleshooting starts with the filter/pump area, drain hose, air gap or drain path, and new-disposal installation checks.
What this guide covers
Error codes: E24, E-24 · Symptoms: Won’t drain / standing water in bottom
This guide follows a structured decision tree built from manufacturer troubleshooting information. It does not assume that the most commonly replaced part is the failed part, and it does not show an exact-fit replacement part unless model compatibility has been independently verified.
Continue this exact diagnostic
Safe troubleshooting sequence
Start with the observations and external checks that can be verified without opening energized assemblies. The interactive version asks these in order and changes the path based on your answers.
- Was a garbage disposal recently installed?Bosch specifically calls out an unremoved dishwasher knockout plug as an drain-problem cause after disposal installation.
- Check the filter and pump-cover areaBosch says a blocked filter/drain pump or loose pump cover can cause E24.
- Inspect the drain pathBosch lists a blocked/kinked drain hose or clogged air gap as possible drain-problem causes.
What the answers can lead to
Verify the disposal knockout plug was removed
A new garbage disposal can block dishwasher drainage if its dishwasher inlet knockout plug was never removed.
Evidence strength: Strong
Clean the filter and owner-accessible pump area
Bosch directs owners to check the filter and pump-cover area for drain problems such as E24 drainage faults.
Evidence strength: Strong
Clear the drain-path restriction
A kinked hose or clogged air gap/drain connection matches Bosch's E24 troubleshooting.
Evidence strength: Strong
the drain problem persists after the manufacturer-level drain checks
If the filter/pump-cover area, hose, air gap, and disposal connection are clear, Bosch recommends further support/service.
Evidence strength: Strong that service is next
When professional diagnosis is the safer next step
If the filter/pump-cover area, hose, air gap, and disposal connection are clear, Bosch recommends further support/service.
Appliance Verdict stops before energized electrical testing, gas-system work, sealed-system work, and other checks that can create unnecessary risk. A technician can use the model, issue, and completed checks from the interactive diagnostic as a starting point.
Repair or replace?
A diagnosis and a repair decision are different questions. Once you have a real repair quote, compare the total repair cost with the all-in price of a comparable replacement. Warranty or protection-plan coverage, appliance age, reliability history, efficiency, and likely future repairs can all matter. Appliance Verdict’s interactive result includes a transparent cost comparison rather than a black-box replacement recommendation.
Manufacturer sources
Dataset reviewed through 2026-09-11. Appliance Verdict is independent and is not endorsed by the manufacturers cited. Always follow the exact owner or service documentation for your model.
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