If your Bosch dishwasher shows E24, start with the accessible drainage checks before buying a pump. A dirty filter, loose pump cover, restricted drain hose or an installation problem can be relevant. The code does not, by itself, tell you that an expensive component has failed.
First stop the dishwasher and disconnect electrical power before touching the pump area. Let hot water cool. Then check the filter, refit it correctly and use your exact model’s manual to inspect the pump cover. If the fault began after a garbage disposal was replaced, ask the installer whether the dishwasher inlet’s knockout plug was removed.
Those checks may resolve a straightforward maintenance or installation problem. If they do not, the next job is to narrow down where drainage is failing—not keep resetting the machine and hoping the warning disappears.
What Does the Bosch Dishwasher E24 Fault Code Mean?
Bosch’s US guidance describes E24 as a drainage problem associated with a blocked filter. It also identifies drain-hose blockage and an unremoved garbage-disposal inlet plug among the possible causes. Its troubleshooting advice includes checking the pump cover and following the owner’s manual for resetting after the problem is corrected. [S1]
In other words, E24 is a starting point for diagnosis, not a shopping instruction. Water left in the tub does not prove the pump motor is dead, and a humming sound cannot establish that diagnosis either.
Before changing anything, photograph the code and record when it appears. Note whether there is substantial standing water, whether the sink drains normally and whether anyone recently moved the dishwasher or changed the disposal. Those details can save you from investigating the wrong part of the system.
Free Check 1: Clean and Correctly Refit the Filter
Use the removal instructions for your exact dishwasher. Bosch recommends cleaning the filter under running water with mild soap and a soft brush. Clean the removable pieces without damaging the mesh, then reassemble and lock the filter securely. [S2]
Do not simply drop the filter back into its opening. Check the locking position described in the manual. If it is damaged or will not secure properly, get the correct part or professional advice instead of running the appliance with it loose.
Do not push food remnants deeper into the sump. Where water is cloudy, assume sharp debris could be hidden and avoid reaching blindly into it. This is an owner-maintenance check, not an invitation to dismantle the pump.
Free Check 2: Check the Pump Cover
The accessible drain-pump cover is usually underneath the filter. Follow the model-specific instructions to locate, remove and refit it. Keep electrical power disconnected throughout this work.
If the cover has been disturbed, make sure it latches correctly. This matters especially when a code appears after cleaning. Bosch links the related E25 code specifically to a blocked pump or a pump cover that is loose or missing. [S3]
If you safely find visible debris in the accessible pump area, remove it according to the manual. Bosch warns that debris may be sharp. Do not force a stuck clip, use an unprotected hand inside the opening or run the dishwasher with the cover removed.
A cover check can reveal a simple assembly problem. It cannot certify that the pump motor and its controls are working correctly.
Free Check 3: Look at Recent Installation Work
Did the trouble begin immediately after a new dishwasher or garbage disposal was installed? That timing deserves attention before anyone recommends replacement parts.
Bosch specifically flags an unremoved knockout plug at the disposal’s dishwasher drain connection as a possible E24 cause. Ask the installer to verify the connection. Do not reach into the disposal or casually disconnect plumbing to check it. [S1]
Also look at accessible drain-hose sections under the sink for obvious kinks or crushing. Do not pull out a built-in dishwasher just to inspect a hidden section. Follow its installation instructions for routing; air-gap requirements and approved arrangements depend on the installation and local rules.
If the sink itself is slow or backing up, a plumbing problem may need attention before further dishwasher testing.
Reset Only After Completing the Checks
Once every owner-removable component is correctly reinstalled, use the drain or reset procedure in your owner’s manual. There is no universal button sequence for every Bosch dishwasher.
Stay nearby during verification and watch for leakage. If the code returns or water still fails to drain, record the result rather than repeating resets indefinitely. A warning disappearing briefly does not prove the underlying cause is fixed.
If you see E15 instead, stop normal drainage troubleshooting. Bosch says E15 means water has been detected in the appliance base and advises turning off the water inflow and contacting support. It is not a fault to clear by tilting the dishwasher and carrying on. [S4]
When Basic Checks Are Not Enough
The difficult decision comes when the filter is clean, the cover is secure and E24 still returns. At that point, you need to separate a remaining restriction, an installation issue and a component fault.
That does not require guessing with a parts catalog. It requires a record of the checks already completed and, where internal testing is needed, qualified diagnosis. A drain pump and a circulation pump are different parts; “dishwasher pump replacement” is not a sufficiently precise quote.
Ask the service provider what establishes the cause, whether the problem is in the appliance or its household connection, and what the complete repair price includes. A cheap part listing does not include diagnosis, labor, taxes or access work.
The Bosch Dishwasher E24 Fault Code Guide
If the free checks have not resolved the problem, our Bosch Dishwasher E24 Fault Code guide gives you a structured next step. It covers E24 and the closely related E25 pump-area problem without assuming that either code means a dead motor.
The downloadable guide includes:
- An ordered sequence of owner-safe drainage checks.
- Pump-cover and reassembly guidance tied to your model manual.
- Installation and household-drain observations to record.
- Clear stop points for leaks and internal electrical diagnosis.
- A technician briefing script and questions before approving parts.
- US cost-planning context, illustrative repair-versus-replacement examples and printable worksheets.
The focused guide costs $3.95. Its value is the organized diagnostic and decision process, not a promise that every dishwasher can be repaired at home. It does not include live electrical testing or bypass instructions.
See the full guide Bosch Dishwasher E24 Fault
For a broader reference across Bosch washing machines, dryers and dishwashers, the existing Bosch Fault Diagnosis guide is available separately at $12.95. Choose the focused guide for this drainage problem; choose the major guide when you want wider appliance coverage.
Repair or Replace? Diagnose First
An accessible blockage and an expensive internal fault lead to different decisions. Until you know which you have, replacing the dishwasher or ordering a pump is premature.
Compare a written repair quote with the complete installed cost of a suitable replacement, not just a bare retail price. Consider other faults, condition, warranty and whether the machine still meets your needs.
Start with the free checks above. If E24 persists, use a structured diagnostic record and professional confirmation to make the next purchase a reasoned decision rather than a guess.
New guide: Bosch Dishwasher E24 Fault Code $3.95.
Bosch major guide:/ — $12.95..
