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.
Before checking Bosch Dishwasher
- 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 this symptom can mean on Bosch Dishwasher
4 checks for Bosch Dishwasher, starting with Switch off and remove standing water
- 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.
When to stop checking Bosch Dishwasher
- 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
Choose the next step for Bosch Dishwasher
For “Bosch dishwasher E24 error: drainage checks”, base the decision on the documented sequence beginning with “Switch off and remove standing water”, not on the warning or symptom alone.
Start with Switch off and remove standing water
Work through all 4 checks for Bosch Dishwasher. If normal operation returns and no warning sign remains, the diagnosis ends without ordering a part.
Stop the Bosch Dishwasher check at a warning sign
Use the stop conditions above for “Bosch dishwasher E24 error: drainage checks”. A qualified diagnosis should come before replacing the appliance whenever repair safety or feasibility is uncertain.
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