Learn what Bosch dishwasher error codes mean and how to fix common problems including E15, E24, E22, E25, E09, and more. Step-by-step troubleshooting guide.
Bosch Dishwasher Error Codes: What They Mean and How to Fix Them
Bosch dishwashers are known for reliability, but when something goes wrong, the display often shows an error code instead of a clear explanation. Understanding these codes can help you identify the issue quickly and determine whether you can fix it yourself or need professional service.
This guide explains the most common Bosch dishwasher error codes, their causes, and practical troubleshooting steps.
Quick Answer Box
| Bosch Error Code | Meaning | Common Fix |
|---|---|---|
| E15 | Water leakage detected | Check for leaks and remove standing water |
| E24 | Drainage problem | Clean drain hose and filter |
| E22 | Filter blocked | Remove and clean dishwasher filter |
| E25 | Drain pump issue | Inspect and clean pump impeller |
| E09 | Heating element failure | Replace heating component |
| E01 | Electronic control fault | Reset dishwasher or replace control board |
| E17 | Water overfill issue | Check water inlet valve |
| E18 | Low water level | Verify water supply and inlet hose |
| E19 | Internal valve malfunction | Service may be required |
What Do Bosch Dishwasher Error Codes Mean?
Bosch dishwasher error codes are diagnostic messages generated by the appliance’s internal control system. Each code identifies a specific malfunction involving drainage, heating, water intake, sensors, pumps, or electronic controls.
When an error appears, the dishwasher typically pauses the wash cycle to prevent further damage.
Bosch Dishwasher Error Code E15
What Does E15 Mean?
The E15 error indicates that the dishwasher’s leak protection system has been activated.
Common Causes
- Water leaking inside the machine
- Damaged door seal
- Loose hose connection
- Excessive detergent foam
- Cracked internal component
How to Fix E15
- Turn off power to the dishwasher.
- Pull the appliance forward carefully.
- Tilt it slightly backward to remove water from the base tray.
- Inspect hoses and seals for leaks.
- Run a short cycle and monitor for recurring leaks.
If the error returns, a damaged component may require replacement.
Bosch Dishwasher Error Code E24
What Does E24 Mean?
E24 is one of the most common Bosch dishwasher errors and indicates a drainage problem.
Common Causes
- Blocked drain hose
- Clogged sink connection
- Dirty filter
- Kinked drain line
- Obstructed garbage disposal inlet
How to Fix E24
- Remove and clean the dishwasher filter.
- Check the drain hose for bends or blockages.
- Inspect the sink drain connection.
- Run the dishwasher’s drain cycle.
- Clean any debris from the air gap if installed.
Bosch Dishwasher Error Code E22
What Does E22 Mean?
The E22 code usually appears when the dishwasher filter becomes clogged.
Symptoms
- Standing water inside the tub
- Slow draining
- Unpleasant odors
- Incomplete wash cycles
Solution
- Remove the bottom rack.
- Unscrew and remove the filter assembly.
- Wash thoroughly under warm water.
- Remove food debris from the filter housing.
- Reinstall the filter correctly.
Regular cleaning helps prevent E22 from recurring.
Bosch Dishwasher Error Code E25
What Does E25 Mean?
E25 signals a problem with the drain pump.
Possible Causes
- Pump blockage
- Broken pump impeller
- Foreign object trapped in pump
- Drain obstruction
Troubleshooting Steps
- Disconnect power.
- Remove the filter.
- Access the drain pump cover.
- Check for glass fragments, food particles, or debris.
- Ensure the impeller spins freely.
Bosch Dishwasher Error Code E09
What Does E09 Mean?
E09 indicates a heating system malfunction.
Common Symptoms
- Dishes remain wet after cycles
- Water does not heat properly
- Extended wash times
Possible Causes
- Failed heating element
- Heat pump failure
- Electrical connection issues
Recommended Action
Heating system repairs often require professional diagnosis because components are integrated into the dishwasher’s circulation system.
Bosch Dishwasher Error Code E01
What Does E01 Mean?
E01 usually points to an electronic control board fault.
Possible Causes
- Voltage fluctuations
- Damaged control module
- Internal wiring issues
Fix
- Disconnect power for 10 minutes.
- Restart the dishwasher.
- If the error persists, the control board may need replacement.
Bosch Dishwasher Error Code E17
What Does E17 Mean?
E17 indicates excessive water entering the dishwasher.
Causes
- Faulty water inlet valve
- Excessive water pressure
- Sensor malfunction
Solutions
- Verify household water pressure.
- Inspect inlet valve operation.
- Check for obstructions affecting sensors.
Bosch Dishwasher Error Code E18
What Does E18 Mean?
The E18 code appears when insufficient water enters the machine.
Common Causes
- Closed water supply valve
- Kinked inlet hose
- Low household water pressure
- Blocked inlet filter
Fix
- Confirm water supply is fully open.
- Inspect inlet hose.
- Clean inlet screen filter.
- Restart the appliance.
Bosch Dishwasher Error Code E19
What Does E19 Mean?
E19 typically indicates a fault with an internal valve or dispenser-related component.
Symptoms
- Interrupted cycles
- Water flow irregularities
- Unexpected shutdowns
Recommended Repair
This issue often requires replacement of a specialized valve assembly and is generally best handled by a qualified technician.
How to Reset a Bosch Dishwasher
Many minor errors can be cleared with a reset.
Standard Reset Procedure
- Press and hold the Start button for approximately 3–5 seconds.
- Wait for the dishwasher to drain.
- Turn off power for several minutes.
- Restore power and restart the cycle.
Note that resetting clears temporary faults but does not repair underlying hardware issues.
Preventing Bosch Dishwasher Error Codes
Regular maintenance significantly reduces future problems.
Best Practices
- Clean filters weekly.
- Inspect spray arms monthly.
- Use the correct dishwasher detergent.
- Check hoses for wear.
- Run a cleaning cycle regularly.
- Avoid overloading dishes.
When to Call a Professional
Professional service is recommended if:
- The same error repeatedly returns.
- Water leaks continue after troubleshooting.
- Heating-related errors occur.
- Electronic control faults persist.
- Internal components require replacement.
Frequently Asked Questions
Why does my Bosch dishwasher keep showing E24?
E24 usually indicates a drainage restriction caused by a blocked filter, clogged drain hose, or sink connection issue.
Can I reset a Bosch dishwasher error code?
Yes. Many temporary faults can be cleared by performing a reset, although the underlying issue must still be addressed.
Is Bosch error code E15 serious?
E15 should be investigated immediately because it indicates water has reached the leak protection system.
What is the most common Bosch dishwasher error?
E24 and E22 are among the most frequently reported Bosch dishwasher error codes because they relate to drainage and filter blockages.
Can I fix Bosch dishwasher errors myself?
Many drainage, filter, and water supply issues can be resolved by homeowners. Electrical, heating, and control board faults typically require professional repair.
Conclusion
Bosch dishwasher error codes are designed to help identify appliance problems quickly. Codes such as E15, E24, E22, E25, and E09 point to specific systems including leak protection, drainage, filtration, pumps, and heating elements. Understanding what each code means allows faster troubleshooting, reduces downtime, and can help prevent unnecessary repair costs.
For recurring errors, persistent leaks, or heating failures, professional diagnosis is the safest solution.
