Match the symptom, then work through the safe checks.
1. What best matches what you observe?
2. Complete only the checks that are safe for you.
Show stop conditions
- E24 remains after the hose and accessible drain connection are confirmed clear
- Standing water contains sharp debris that cannot be removed safely
- Internal pump, wiring, or control diagnosis is required
Likely causes
- The waste-water hose is kinked, sharply bent, or blocked
- The sink siphon, air gap, or drain connection is obstructed or still sealed
- The drain-pump cover is not locked correctly on a model that monitors that condition
- A deeper drain-pump or plumbing fault remains after the external drain path is cleared
Quick checks, in order
Check the drain hose route
With the dishwasher off, inspect the visible waste-water hose for sharp bends, crushing, or obvious blockage. Restore the hose to a smooth route without kinks.
Check the sink drain connection
Inspect the accessible air gap or siphon connection for debris and confirm a newly installed connection is actually open rather than still capped/sealed.
Check the pump cover seating
After disconnecting power, follow the model manual to confirm the drain-pump cover is correctly seated. Use caution around debris because broken glass or sharp fragments may be present.
Stop if drainage still fails
If E24 persists after the external hose/connection checks, avoid repeated cycles with standing water and arrange model-specific service.
Is the external waste-water path clear and correctly connected?
Correct the external drain restriction, then run one rinse/drain test and watch for normal discharge.
The fault may be at the pump cover, drain pump, or another internal drainage component; continue only with model-specific Bosch guidance.
Stop repeating resets. Arrange service to distinguish an internal pump/control problem from the plumbing path.
Stop and get qualified help when
- E24 remains after the hose and accessible drain connection are confirmed clear
- Standing water contains sharp debris that cannot be removed safely
- Internal pump, wiring, or control diagnosis is required
Official support and model manuals
Use the full model number from the rating label. The manufacturer manual is the deciding reference when codes differ by region or product family.
Frequently asked questions
What does Bosch dishwasher E24 mean?
Bosch links E24 mainly to a blocked or kinked waste-water hose/drain path, with the siphon/air-gap connection and pump-cover seating also listed as possible causes on supported models.
Is E24 the same as E25?
No. They are related drainage faults, but Bosch documentation distinguishes E24 around the drain path/hose and E25 more specifically around a blocked drain pump or loose/missing pump cover.