A Bosch dishwasher E24 error indicates that the dishwasher is not draining correctly. Bosch directs owners to check the drain pump area, hose, and related drainage path. Food debris, glass, a kinked hose, or an installation issue can all interrupt flow.
Turn off the dishwasher at the breaker before reaching into the sump. Wear cut-resistant gloves because broken glass may be hidden in cloudy water.
Common causes of E24
- A dirty filter or debris near the pump cover.
- A blocked or kinked drain hose.
- A clogged sink air gap or disposer connection.
- A disposer knockout plug left in place after installation.
- A failed drain pump or electrical fault.
Safe checks in order
1. Remove standing water carefully
Switch off the breaker. Remove the lower rack and bail out excess water with a cup and sponge. Do not put bare fingers into water where glass could be present.
2. Clean the filter
Unlock and remove the filter assembly as shown in the model manual. Rinse away food residue and inspect the filter for damage before reinstalling it securely.
3. Inspect the pump cover area
Only if your manual describes owner access, remove the pump cover and look for visible debris. Do not force the impeller, disassemble the pump, or restore power while the area is open.
4. Check the drain hose and sink connection
Look for a kink behind the dishwasher or under the sink. Clean an accessible air gap cap. If connected to a disposer, confirm it drains normally and that the dishwasher inlet was opened during installation.
5. Run one test
Reassemble all parts, restore power, and run a short drain or rinse cycle. Watch the sink connection for leaks.
When to call a professional
Call for service if E24 returns, the pump hums or grinds, the hose is inaccessible, water leaks, or the dishwasher must be removed. A plumber may be appropriate when the sink or disposer also drains slowly.
Related dishwasher guides
For a broader diagnosis, see dishwasher not draining. If drainage works but dishes remain dirty, use our dishwasher cleaning guide.
Frequently asked questions
Will resetting a Bosch dishwasher clear E24?
It may clear the display temporarily, but it will not remove a blockage or repair a pump.
Can a garbage disposal cause E24?
Yes. A blocked connection or an unopened knockout on a newly installed disposer can prevent dishwasher drainage.
Is it safe to reach into the pump?
Only inspect the owner-accessible area with power off and protective gloves. Do not reach into hidden components.
Why does E24 return intermittently?
Loose debris, a partially kinked hose, or a weakening pump can restrict flow only on some cycles.