Bosch associates E24 with partial or complete drainage failure, commonly caused by a blocked filter or pump, a loose pump cover, a bent drain hose or a restricted household drain connection. Standing water does not by itself prove that the pump must be replaced. Identify the E-number on the door edge and consult that model’s manual before removing the pump cover because access differs. Begin with the visible filter and hose path, protect yourself from broken glass, then test only after every cover and filter is locked back into position.
Safety first
- Disconnect power before reaching below the filter, let hot water cool and wear protective gloves because broken glass may be hidden around the pump.
What the symptom may indicate
Checks in the right order
- Switch off and remove standing water
Turn the dishwasher off, disconnect power and close the water supply. Let the water cool, remove the lower basket and lift out standing water with a cup and sponge.
- Clean the filter and inspect the pump area
Remove and wash the filter with mild soap and a soft brush. Following the exact manual, remove the pump cover, clear loose debris with protective gloves and refit the cover until it clicks.
- Check the drain hose and connection
Inspect the accessible hose for a sharp bend or crushing. Check the air gap, siphon or disposal connection used in your installation; a newly fitted disposal may still contain its knockout plug.
- Reassemble and run a rinse
Lock the filter and pump cover, reconnect the hose and restore power. Reset only as described in the owner manual and run a rinse while watching for leaks and normal drainage.
Stop and get qualified help when
- Stop if the appliance leaks, the pump cover cannot be identified from the manual, wiring is visible, the impeller is damaged or E24 returns after the safe checks; contact Bosch service.
Next step
Repair, replace a part, or arrange a diagnosis?
Use the checks and stop conditions above to choose the least costly safe next step. A symptom alone never proves that the appliance has failed.
Resolve it without buying anything
Complete the 4 safe checks in order. If normal operation returns and no warning sign remains, no replacement is indicated.
Replace only the confirmed part
If the checks isolate a worn or blocked component, match its complete reference to the exact appliance model before ordering.
This guide does not identify a replacement part. Do not order a generic component from the symptom alone.
Arrange a diagnosis before replacing the appliance
Stop at any warning sign listed above. A qualified diagnosis should confirm that repair is unsafe, unavailable or uneconomical before an appliance replacement is considered.
Stop and get qualified help when : 1
Compare replacement appliances on AmazonPaid Amazon search. Results are suggestions, not a diagnosis or a recommendation to discard the appliance.Sources used
- Bosch — Bosch identifies E24 as a drainage failure and lists a blocked filter or hose, loose pump cover and obstructed plumbing connection as checks.
- Bosch — Bosch France confirms that E24 corresponds to partial or complete drainage failure and advises filter and drain-pump maintenance.
Last checked: 29 August 2026