When a Bosch dishwasher shows the E24 error code, it signals a drainage problem. The E24 error code means the dishwasher is not draining correctly, often due to a clogged filter, blocked hose, or a faulty drain pump. This issue can leave standing water in the bottom of the machine and stop the cycle from finishing.
The good news is that this error often has simple fixes that don’t require a service call. By checking the filter, hose, and pump, most people can clear the blockage and restore normal operation. Resetting the dishwasher can also clear temporary glitches that trigger the code.
Understanding what causes the Bosch dishwasher E24 error code and how to fix it can save time, money, and frustration. With a few basic steps, the dishwasher can usually be back to working as it should.
What Does Error Code E24 Mean?
The Bosch dishwasher error code E24 indicates a drain blockage that impedes proper water flow in your dishwasher’s drain system. This is one of the most common error codes on Bosch dishwashers and fortunately, many E24 issues can be resolved with proper troubleshooting.
Error code E24 specifically indicates that your Bosch dishwasher is experiencing drainage problems. When this error appears, it means:
- Water is not draining properly from the dishwasher tub
- The drain system has a blockage preventing normal water flow
- The dishwasher’s sensors detect that water levels aren’t dropping as expected during the drain cycle
Common Causes of E24 Error
Understanding the root causes helps you target your troubleshooting efforts effectively:
1. Clogged Drain Filter
- Food particles and debris accumulate in the dishwasher’s bottom filter
- Grease buildup restricts water flow through the filter system
- Long-term neglect of filter maintenance
2. Blocked Drain Hose
- Kinks or bends in the drain hose
- Food debris lodged in the hose
- Improper installation creating drainage restrictions
3. Garbage Disposal Issues
- Clogged garbage disposal (if dishwasher drains through it)
- Knockout plug not removed during installation
- Disposal not running when dishwasher attempts to drain
4. Sink Drain Problems
- Kitchen sink drain blockage affecting shared drainage
- P-trap clogs in the sink’s plumbing
- Main drain line issues
Step-by-Step Solutions
Solution 1: Clean the Dishwasher Filter
This is the most common fix for E24 errors:
- Remove the bottom dish rack from your dishwasher
- Locate the cylindrical filter at the bottom of the dishwasher tub
- Unscrew the filter assembly (usually turns counterclockwise)
- Remove all filter components and inspect for debris
- Rinse filters under hot running water using a soft brush to remove buildup
- Check for stubborn grease and clean with dish soap if necessary
- Reinstall the filter assembly making sure it’s properly seated and tightened
Solution 2: Inspect and Clear the Drain Hose
- Turn off power to the dishwasher at the circuit breaker
- Access the drain hose (usually under the kitchen sink or behind the dishwasher)
- Check for visible kinks or bends in the hose
- Disconnect the drain hose from the garbage disposal or sink drain
- Flush the hose with hot water to remove blockages
- Use a plumber’s snake if debris is stubborn
- Reconnect the hose ensuring proper slope for drainage
Solution 3: Address Garbage Disposal Issues
If your dishwasher drains through a garbage disposal:
- Run the garbage disposal for 30 seconds with cold water
- Check if the disposal is clogged and clear if necessary
- Verify the knockout plug was removed during dishwasher installation
- Ensure proper connection between dishwasher drain hose and disposal
Solution 4: Check Kitchen Sink Drainage
- Test sink drainage by running water down the drain
- Clear any visible clogs in the sink
- Check the P-trap under the sink for blockages
- Run hot water through the system to flush debris
Advanced Troubleshooting
If Basic Solutions Don’t Work
Check the Drain Pump
- Listen for unusual noises during the drain cycle
- Inspect the drain pump for visible obstructions
- Test pump operation (may require professional assistance)
Verify Proper Installation
- Ensure drain hose has proper slope (not too high or low)
- Check that drain hose isn’t pushed too far into the disposal or drain
- Verify high loop installation in the drain hose
Reset the Dishwasher
- Turn off the dishwasher
- Unplug from power for 5 minutes
- Plug back in and restart
- Run a test cycle to see if error clears
Prevention Tips
To avoid future E24 errors:
Regular Maintenance
- Clean the filter monthly or after heavy use periods
- Scrape dishes thoroughly before loading
- Run hot water at the kitchen sink before starting dishwasher
- Use dishwasher cleaner monthly to prevent buildup
Proper Loading Practices
- Don’t overload the dishwasher
- Face soiled surfaces toward spray arms
- Avoid blocking the bottom of the dishwasher where the filter is located
When to Call a Professional
Contact a qualified appliance repair technician if:
- E24 error persists after trying all solutions
- You’re uncomfortable performing any of these repairs
- Multiple error codes appear simultaneously
- Drain pump replacement is needed
- Electrical issues are suspected
Cost Considerations
DIY repairs typically cost:
- Filter cleaning: Free (regular maintenance)
- Drain hose replacement: $15-30 for parts
- Basic tools and cleaning supplies: $10-25
Professional repair costs usually range:
- Service call and basic cleaning: $100-150
- Drain pump replacement: $150-300
- Complex drainage issues: $200-400
Final Recommendations
Start with the simplest solution: cleaning the dishwasher filter thoroughly. This resolves the majority of E24 errors. If the problem persists, work through the drainage system methodically, checking each component from the dishwasher to the main drain line.
The E24 error code, while concerning, is usually fixable with proper troubleshooting. Regular maintenance and proper use habits will help prevent future occurrences and keep your Bosch dishwasher running efficiently.
Remember to always prioritize safety by disconnecting power before performing any repairs, and don’t hesitate to seek professional help for complex issues or if you’re unsure about any repair procedures.
Key Takeaways
- The E24 error code means the dishwasher is not draining properly.
- Common causes include a clogged filter, kinked hose, or blocked pump.
- Simple checks and resets often solve the problem without professional help.
Frequently Asked Questions
The E24 error points to draining issues that can come from a clogged filter, a kinked or blocked hose, or a faulty drain pump. Resetting the unit can sometimes clear the code, but physical inspection of parts is often needed.
What steps can I take to resolve the E24 error on my dishwasher?
Start by resetting the dishwasher using the control panel or by unplugging it for a few minutes. If the error remains, inspect the filter, drain hose, and pump for blockages. Cleaning these parts often restores normal draining.
Is the E24 error indicative of a draining problem?
Yes. The E24 error means the dishwasher is not draining water properly. This can result from clogs, hose problems, or pump failure.
How do I check the dishwasher filter when troubleshooting the E24 error?
Remove the bottom rack and spray arm to access the filter. Take out the filter assembly and wash it under warm water with mild soap. Make sure no food debris or foreign objects remain.
Could a blocked hose be the cause of the E24 error, and how would I verify this?
Yes. Pull the dishwasher slightly forward and inspect the drain hose for kinks or clogs. Disconnect the hose if needed and flush it with water to confirm it is clear.
Are there specific Bosch dishwasher models more prone to the E24 error, and what are the common fixes?
The error can occur across many Bosch models, especially those with similar drain designs. Common fixes include cleaning the filter, straightening or replacing the hose, and clearing the drain pump.
What professional repair options are available if I’m unable to fix the E24 error myself?
If cleaning and resets do not fix the problem, contact Bosch customer service or a certified appliance repair technician. They can test the drain pump, control board, or wiring and replace faulty parts if needed.
