Ever started a wash cycle only to find your Bosch dishwasher isn’t draining properly? If you’ve spotted the e24 error code on the display, you’re not alone. This issue is one of the most common errors Bosch dishwasher owners face.
The e24 error code means that the dishwasher’s drain system isn’t working as it should. This can happen due to a clogged filter, a kinked drain hose, or a blocked drain pump. According to Bosch, regular maintenance can help prevent drainage issues and keep your dishwasher running smoothly.
The good news is that many causes of the e24 error are easy to check and fix yourself. In this guide, I’ll walk you through the most common reasons for this error and show you step-by-step how to solve the problem. By the end, you’ll know exactly what to do to get your dishwasher draining again.
What Are the Causes of Error Code E24 on Bosch Dishwasher?
Here are the reasons that can cause the E24 error code on the Bosch dishwasher:
- Blocked drain hose – Food debris or grease buildup inside the drain hose restricts water flow, preventing proper drainage and triggering the E24 error code.
- Dirty dishwasher filter – A clogged filter traps food particles, reducing water flow and causing the dishwasher to display the E24 error during the drain cycle.
- New garbage disposal – Knockout plug isn’t removed – A newly installed garbage disposal may still have the knockout plug intact, blocking the drain line and preventing water from exiting the dishwasher.
- Kinked or damaged inlet hose – A kinked or cracked inlet hose disrupts the water supply, causing the dishwasher to stop mid-cycle and show the error code.
- Siphon connection – An improperly sealed siphon connection allows water backflow into the dishwasher, interrupting the drain cycle and triggering the error.
- Loose pump cover – A loose drain pump cover prevents the drain pump from creating proper suction, limiting water removal, and displaying the E24 code.
- Clogged air gap – A blocked air gap restricts airflow in the drainage system, preventing the dishwasher from draining and causing water to back up.
- High loop missing or incorrect installation – Without a high loop in the drain hose, wastewater can re-enter the dishwasher, leading to incomplete drainage and error code on the screen.
- Issue with the drain pump – A faulty drain pump or damaged impeller disrupts water removal, preventing the dishwasher from completing the drain cycle.
- Malfunctioning control board – Electrical failures within the control board can misinterpret sensor readings, stopping the drain pump and causing the E24 error.
If you’re in a hurry, take a look at this table mentioning common issues and their fixes of E24 error.
| Issue | Fix |
| Blocked Drain Hose | Inspect the hose for clogs or debris and clear any blockages. |
| Dirty Dishwasher Filter | Remove, clean with warm soapy water, and reinstall the filter. |
| New Garbage Disposal (Knockout Plug Not Removed) | Remove the knockout plug inside the disposal inlet. |
| Kinked or Damaged Inlet Hose | Straighten or replace the hose if kinked or damaged. |
| Loose Pump Cover | Secure the pump cover tightly to ensure proper drainage. |
| Clogged Air Gap | Clean the air gap to remove debris and ensure airflow. |
| Improper High Loop Installation | Verify the drain hose has a high loop to prevent backflow. |
| Drain Pump Blockage or Malfunction | Clear debris from the pump or replace it if faulty. |
| Siphon Connection Issue | Ensure the siphon connection is sealed and correctly installed. |
| Malfunctioning Control Board | Reset the dishwasher or replace the control board if needed. |
| Dirty Dishwasher Interior | Clean using a dishwasher cleaner or a vinegar and baking soda solution. |
| Electronic Glitch | Perform a dishwasher reset by holding the Start/Reset button or power cycling. |
How Can I Fix the E24 Error on the Bosch dishwasher?
Here’s how you can solve error code E24 on the Bosch dishwasher:
Clean the Filter
A clogged filter often triggers the E24 error code in a Bosch dishwasher. The filter is located at the bottom of the dishwasher and prevents food debris from entering the drain pump.
To clean it, start by removing the lower dish rack and spray arm. Twist the filter’s top to unlock and lift it out. If it resists, consult your dishwasher’s manual for specific removal instructions.
Wash the filter thoroughly with warm, soapy water to clear food particles and grease. Check the surrounding area for any trapped debris that might block water flow. While the filter is removed, inspect the drain pump opening to ensure it’s free of obstructions.
Reassemble the components, ensuring the filter locks securely in place. A clean filter helps maintain proper drainage, reducing the likelihood of repeated E24 errors.
Check the Drain Pump
If cleaning the filter doesn’t resolve the issue, the drain pump might be clogged or malfunctioning. The pump removes wastewater during the drain cycle, and any blockage in it can trigger the error code. With the filter removed, locate the pump cover—usually beneath the filter housing. Use a teaspoon to unclip the cover, then carefully check for debris like food particles, glass shards, or plastic fragments.
Verify that the pump’s impeller rotates freely. A jammed impeller indicates a damaged pump, which may need to be replaced. For models with a float near the filter, lift the float to test the pump’s function—this should activate the pump if it’s operational. Always wear gloves when handling the pump area to avoid injury. If the error code still persists follow next steps given below.
Check for Kinked Hoses
A kinked hose can restrict water flow, leading to the E24 error code in a Bosch dishwasher. Start by inspecting the drain hose, which connects the dishwasher to the sink drain or garbage disposal. Ensure it’s free of sharp bends, twists, or kinks that could block water from draining properly.
If the drain hose doesn’t connect to an air gap, check that it’s configured with a high loop—a vertical loop that prevents wastewater from re-entering the dishwasher. While essential for proper drainage, the high loop itself rarely causes the this error. Straighten any bends you find and ensure the hose is securely connected. If the hose appears damaged or excessively worn, consider replacing it to restore proper water flow.
Check the Water Inlet Hose
The water inlet hose supplies water to your dishwasher. If it becomes kinked or damaged, water flow may be restricted, affecting the dishwasher’s ability to complete its cycle and causing the E24 error. Locate the hose at the back of the dishwasher, where it connects to the home’s water supply. Carefully inspect it for bends, twists, or visible damage that could limit water intake.
Straighten any kinks, ensuring the hose has a clear, unrestricted path. If you notice cracks, bulges, or wear, replace the hose to prevent future water flow issues. Additionally, verify that the hose connection is secure and not leaking.
Clean the Dishwasher
A dirty dishwasher can sometimes trigger the E24 error code by obstructing water flow. Residue, grease, and food particles can accumulate inside the appliance, restricting drainage. Cleaning the dishwasher helps remove these blockages and improves its performance.
Start by using a dishwasher cleaning solution, such as one made by Bosch or another trusted brand. If you prefer a homemade option, pour 1 cup of distilled white vinegar into a dishwasher-safe bowl and place it on the top rack. Avoid pouring vinegar directly into the dishwasher, as it will drain out at the start of the cycle. Run a normal cycle without dishes or detergent.
Next, sprinkle 1 cup of baking soda across the bottom of the dishwasher and run a short, hot cycle. Baking soda helps dissolve buildup, while vinegar breaks down grease and grime. Avoid bleach-based cleaners if your dishwasher has stainless steel components, as bleach can cause damage.
Check the Air Gap, Garbage Disposal, or S-Trap
A blocked air gap, garbage disposal, or S-trap can prevent proper drainage, causing the E24 error. The dishwasher’s drain hose usually connects to one of these components under the sink, and clogs can occur in any of them.
If your dishwasher connects to an air gap, remove its cap and clean any debris inside using a brush or pipe cleaner. If the drain hose connects to a garbage disposal, ensure the disposal is clear of food waste. For newly installed disposals, verify that the knockout plug inside the drain port has been removed. If the dishwasher drains into an S-trap, disconnect the hose and check for blockages using a flashlight.
After clearing any obstructions, reconnect the drain hose, ensuring it’s securely attached. Run a test cycle to confirm the dishwasher drains properly. If the error code remains, proceed with further troubleshooting.
Reset the Dishwasher
If previous steps haven’t resolved the E24 error code, resetting the dishwasher can help clear minor electronic glitches that may prevent proper drainage. Resetting the appliance reboots its control board, restoring normal functionality.
For most Bosch dishwashers, press and hold the Start/Reset button for approximately 3 to 5 seconds until the display turns off. After releasing the button, wait about 5 to 10 minutes before turning the dishwasher back on. This delay allows the system to fully reset.
If the dishwasher doesn’t have a dedicated reset button, power cycle the appliance by unplugging it from the electrical outlet or switching off the circuit breaker. Keep it disconnected for at least 5 minutes before restoring power. Afterward, run a test cycle to check if the dishwasher drains properly.
When to Seek Professional Help?
If the E24 error doesn’t go away after cleaning the filter, checking the hoses, and inspecting the drain pump, it’s time to call a professional. A technician can check for more complex issues like a broken drain pump, faulty wiring, or a problem with the control board.
If the dishwasher keeps having drainage problems even with regular cleaning, getting expert help can save you from bigger repairs later. For the best results, contact a certified Bosch technician, especially if your dishwasher is still under warranty.
What Are the Tips to Prevent Error Codes in the Future?
Preventing error codes in your Bosch dishwasher involves routine maintenance, proper usage, and timely inspections. Follow these practical tips to ensure smooth operation and reduce the risk of malfunctions:
- Clean the Filter Regularly: Remove and rinse the dishwasher filter every month to prevent food particles from clogging the drainage system.
- Inspect the Drain Hose: Ensure the drain hose is free of kinks, clogs, or damage that could obstruct water flow. Verify that the high loop is correctly positioned to prevent backflow.
- Check the Drain Pump: Periodically inspect the drain pump for debris, ensuring the impeller spins freely and the pump cover is securely in place.
- Maintain the Air Gap or Garbage Disposal: Clean the air gap and garbage disposal regularly to prevent blockages that could lead to drainage issues.
- Use the Right Detergent: Choose dishwasher-safe detergent that doesn’t create excessive suds, which can trigger drainage errors.
- Load Dishes Properly: Avoid overloading the dishwasher or blocking the spray arms, as improper loading can restrict water circulation.
Conclusion
Understanding the Bosch dishwasher E24 error helps you address drainage problems effectively. This error often results from a clogged filter, kinked drain hose, or blocked drain pump. Identifying these issues is the first step toward restoring proper dishwasher function.
Fortunately, most solutions are simple. Cleaning the filter, inspecting hoses, and checking the pump can often resolve the error without professional help. Ensuring a high loop installation and clearing the air gap also prevents drainage issues.
Regular maintenance plays a key role in avoiding future errors. Cleaning the filter monthly, inspecting hoses, and using the correct detergent keeps your dishwasher running smoothly. By following these troubleshooting steps and preventive measures, you can maintain optimal performance and minimize the chances of encountering this error again.
FAQs
Why Is My Bosch Dishwasher Not Draining E24?
The Bosch dishwasher E24 error indicates a drainage issue caused by a clogged filter, blocked drain hose, or faulty pump. Incorrect installation, like a missing high loop or blocked air gap, can also trigger the error. Water pooling at the dishwasher’s bottom signals the need for troubleshooting.
How Do I Know if My Dishwasher Pump Is Clogged?
A clogged dishwasher pump causes standing water, slow drainage, and unusual noises like gurgling or humming. To check, remove the filter, access the pump cover, and inspect the impeller for debris or restricted movement. Use protective gloves when handling sharp objects like broken glass or food particles.
What Does E24 Mean on a Dishwasher?
E24 indicates the dishwasher can’t drain due to a clogged filter, blocked drain hose, or malfunctioning pump. Symptoms include water pooling at the bottom, interrupted wash cycles, and gurgling sounds. Ensure the garbage disposal’s knockout plug is removed if recently installed to prevent drainage blockages.
Can I Reset My Bosch Dishwasher to Fix the E24 Error?
Yes, resetting the dishwasher can resolve E24 errors. Disconnect the appliance from power for five minutes or press and hold the Start/Reset button for three to five seconds. If the error persists, inspect and clean the filter, drain hose, and pump. Persistent issues may indicate a faulty control board.
