In this comprehensive guide, we’ll explore the common Bosch dishwasher error codes and their meanings.
We’ll delve into the potential causes behind each error, providing step-by-step solutions to troubleshoot and resolve the issues.
Whether it’s a simple reset or the need for professional assistance, you’ll be well-equipped to tackle any error that may arise.
Understanding these error codes will help you maintain your Bosch dishwasher’s optimal performance, ensuring clean and efficient dishwashing results after each cycle.
Bosch Dishwasher Error Codes
Here is a chart summarizing the dishwasher error codes, potential causes, and solutions:
| Error Code | Potential Cause | Suggested Solution |
|---|---|---|
| E01 | Heat pump motor circuit fault | Reset power to breaker for 30 seconds. |
| E02 | Main control board relay fault/error | Reset power to breaker for 30 seconds. |
| E03 | Main control board relay fault/error | Reset power to breaker for 30 seconds. |
| E05 | Wash arm diverter circuit fault/error | Reset power to breaker for 30 seconds. |
| E06 | Door sensor circuit fault/error | Reset power to breaker for 30 seconds. |
| E07 | Zeolite (Crystal Dry) fan motor defect | Reset power to breaker for 30 seconds. |
| E09 | Heat pump internal heater fault/error | Reset power to breaker for 30 seconds. |
| E10 | Zeolite (Crystal Dry) chamber heater fault/error | Reset power to breaker for 30 seconds. |
| E12 | Limescale build-up in the heat pump | Descaling the dishwasher is required. |
| E14 | Flow meter failure | Contact Bosch Customer Support. |
| E15 | Water in the base of the dishwasher | Turn off the water inflow and contact Bosch Customer Support. |
| E16/E17 | Issue with water flowing into the dishwasher | Check the inlet hose, ensure it’s not kinked or damaged. If unresolved, contact Bosch Customer Support. |
| E18 | Water flow issue or low water level | Check inlet hose and water supply. Call Bosch Customer Support if unresolved. |
| E19 | Detergent dispenser solenoid circuit fault/error | Reset power to breaker for 30 seconds. Call Bosch Customer Support if unresolved. |
| E20 | Heat pump internal heater fault/error | Reset power to breaker for 30 seconds. Call Bosch Customer Support if unresolved. |
| E21 | Heat pump is blocked | Reset power to breaker for 30 seconds. Call Bosch Customer Support if unresolved. |
| E22 | Dishwasher filter is blocked | Remove, clean, and reinstall the filter. Refer to how-to guides if necessary. |
| E23 | Drain pump issue | Contact Bosch Customer Support. |
| E24 | Drain filter being blocked | Check inlet hose, ensure pump cover is not loose, and ensure garbage disposal’s dishwasher drain connection is clear. |
| E25 | Drain pump blocked or cover is loose | Ensure drain pump cover is not loose and pump is not blocked. Refer to the manual for guidance. |
| E27 | House power supply to the unit is too low | Reset power to breaker for 30 seconds. If the error occurs again, contact an electrician. |
Bosch Dishwasher Error Codes and Solutions
E01: Heat Pump Motor Circuit Fault
Potential Cause: There is a fault in the heat pump motor circuit. The heat pump is responsible for heating the water during the wash cycle.
Suggested Solution: First, let’s try resetting the power to the dishwasher. Turn off the breaker that supplies power to the appliance and leave it off for about 30 seconds. Then, turn the breaker back on. This reset may clear any temporary glitches.
If the error persists, it’s best to call Bosch Customer Support for further assistance.
They have experts who can diagnose the specific issue with the heat pump motor and guide you through further steps or arrange for a repair if necessary.
Remember, attempting to repair the heat pump motor yourself may void the warranty or cause additional damage to the dishwasher.
E02 & E03: Main Control Board Relay Fault/Error
Potential Cause: The main control board is experiencing a relay fault or error. The control board is like the brain of your dishwasher, managing various functions during the wash cycle.
Suggested Solution: Similar to the previous error, start by resetting the power to the dishwasher. Turn off the breaker for 30 seconds to give it a fresh start.
If the problem persists, it’s time to get in touch with Bosch Customer Support.
Their knowledgeable team can help you troubleshoot the specific issue with the control board.
They might walk you through additional steps or arrange for professional repairs if needed.
Remember, tampering with the control board on your own is not recommended, as it could lead to further complications.
E05: Wash Arm Diverter Circuit Fault/Error
Potential Cause: The wash arm diverter circuit might be experiencing a fault or error. The wash arm diverter controls the flow of water to different spray arms during the wash cycle.
Suggested Solution: For this error, let’s try resetting the power to the dishwasher first. Turn off the breaker for 30 seconds to see if the problem resolves.
If the E05 error code persists, it’s essential to reach out to Bosch Customer Support.
They have trained professionals who can assist you in diagnosing the specific issue with the wash arm diverter circuit.
They’ll guide you through further steps or arrange for a service call if necessary.
Remember, dealing with complex components like the wash arm diverter requires expertise, so it’s best to leave it to the professionals.
E06: Door Sensor Circuit Fault/Error
Potential Cause: The door sensor circuit might be faulty or experiencing an error. The door sensor ensures that the dishwasher door is securely closed during operation.
Suggested Solution: Let’s start with the standard troubleshooting step—resetting the power. Turn off the breaker for 30 seconds to see if that resolves the issue.
If the error code E06 remains, it’s crucial to get assistance from Bosch Customer Support.
Their experts can help you pinpoint the specific problem with the door sensor circuit.
They’ll guide you through further troubleshooting or schedule a repair if needed.
Remember, tampering with electrical components like the door sensor circuit could be hazardous, so it’s best to seek professional help.
E07: Zeolite (Crystal Dry) Fan Motor Defect
Potential Cause: The Zeolite (Crystal Dry) fan motor might be defective. The Zeolite system aids in the drying process of your dishwasher, and if the fan motor is malfunctioning, it can hinder the drying performance.
Suggested Solution: To troubleshoot this issue, start by resetting the power to the dishwasher. Turn off the breaker that supplies power to the appliance and leave it off for about 30 seconds. Then, turn the breaker back on. This reset may clear any temporary glitches.
If the error persists, it’s essential to contact Bosch Customer Support for expert assistance.
They can diagnose the specific problem with the fan motor and guide you through further steps or arrange for a repair if necessary.
Avoid attempting to repair the fan motor yourself, as it may void the warranty or cause further damage to the appliance.
Understanding the significance of the Zeolite system and its role in the drying process can help you appreciate the value of addressing this error promptly.
Timely resolution will ensure your dishes come out clean and dry after each wash, providing you with the convenience and efficiency you expect from your Bosch dishwasher.
E09: Heat Pump Internal Heater Fault/Error
Potential Cause: The E09 error code indicates a fault or error with the heat pump’s internal heater. The heat pump is responsible for heating the water during the wash cycle.
Suggested Solution: Start by resetting the power to the dishwasher. Turn off the breaker supplying power to the appliance and leave it off for about 30 seconds. Then, turn the breaker back on. This simple reset might clear any temporary issues.
If the error code E09 persists, it’s crucial to contact Bosch Customer Support for further troubleshooting.
They have knowledgeable technicians who can diagnose the specific problem with the heat pump’s internal heater.
They’ll guide you through additional steps or arrange for a repair if needed.
Attempting to repair the internal heater on your own is not recommended, as it may void the warranty or lead to more significant problems.
E10: Zeolite (Crystal Dry) Chamber Heater Fault/Error
Potential Cause: The E10 error code suggests a fault or error with the Zeolite (Crystal Dry) chamber heater. The Zeolite system helps with the drying process in your dishwasher.
Suggested Solution: To address this issue, try resetting the power to the dishwasher
Turn off the breaker that supplies power to the appliance and leave it off for approximately 30 seconds. Then, turn the breaker back on. This reset may resolve the problem.
If the E10 error code persists, contact Bosch Customer Support for expert assistance.
Their trained professionals can identify the specific issue with the Zeolite chamber heater and guide you through further steps or arrange for a service visit.
Repairing the chamber heater on your own is not advised, as it requires specialized knowledge and can void the warranty.
E12: Limescale Build-up in the Heat Pump
Potential Cause: The E12 error code is related to limescale build-up in the heat pump of your Bosch dishwasher. Limescale can accumulate over time and affect the efficiency of the heat pump.
Suggested Solution: To address this issue, your dishwasher requires descaling. Follow the manufacturer’s guidelines or refer to the dishwasher’s manual for descaling instructions.
Descaling will help remove limescale deposits and restore the heat pump’s optimal performance.
Regular descaling is essential to maintain the dishwasher’s efficiency and prolong its lifespan.
It’s recommended to descale the dishwasher periodically, depending on your water hardness and frequency of use.
Neglecting this maintenance task can lead to more significant issues and higher energy consumption.
E14: Flow Meter Failure
Potential Cause: If you encounter the E14 error code on your Bosch dishwasher, it indicates a flow meter failure. The flow meter measures the water entering the dishwasher.
Suggested Solution: For this error, it’s crucial to contact Bosch Customer Support immediately.
The flow meter is a critical component that ensures the correct amount of water is supplied to the dishwasher.
Their experts can diagnose the specific issue with the flow meter and guide you through further steps or arrange for a repair if needed.
Attempting to repair or replace the flow meter yourself is not advised, as it requires specialized knowledge and can void the warranty.
Prompt resolution of the E14 error is essential to prevent water-related issues and ensure the dishwasher’s efficient performance.
E15: Water in the Base of the Dishwasher
Potential Cause: The E15 error code means there is water accumulated in the base of your Bosch dishwasher. This can be due to a leak or some other issue.
Suggested Solution: To prevent further damage, turn off the water inflow to the dishwasher immediately. Then, contact Bosch Customer Support for professional guidance and resolution.
Water in the base of the dishwasher can lead to serious problems, including damage to electrical components and potential safety hazards.
Therefore, it’s crucial to address the E15 error promptly to avoid further complications and ensure the dishwasher’s safe operation.
E16/E17: Issue with Water Flowing into the Dishwasher
Potential Cause: The E16/E17 error codes suggest there might be an issue with water flowing into your Bosch dishwasher. This can be caused by a kinked or damaged inlet hose.
Suggested Solution: First, check the inlet hose to ensure it’s not blocked, kinked, or damaged. Straighten any kinks or replace the hose if it’s damaged.
If the problem persists, it’s essential to contact Bosch Customer Support for further assistance.
The issue might be related to the water supply or an internal component.
Their experts can guide you through additional troubleshooting steps or arrange for a service visit to address the E16/E17 error effectively.
E18: Water Flow Issue or Low Water Level
Potential Cause: The E18 error code indicates there might be a water flow issue or the water level in your Bosch dishwasher is too low.
Suggested Solution: To troubleshoot, check the inlet hose and the water supply for any problems. Ensure the water supply valve is fully open, and there are no blockages.
If the error continues, it’s crucial to contact Bosch Customer Support for expert help.
Their technicians can diagnose the specific cause of the E18 error and provide you with appropriate solutions to restore the dishwasher’s proper water flow and level.
Regularly inspecting the water supply and ensuring its proper flow is essential to the dishwasher’s efficient performance.
Low water levels can lead to poor wash results and potentially damage the dishwasher’s components.
E19: Detergent Dispenser Solenoid Circuit Fault/Error
Potential Cause: If you see the E19 error code on your Bosch dishwasher’s display, it means there is a fault or error with the detergent dispenser solenoid circuit. The solenoid controls the release of detergent during the wash cycle.
Suggested Solution: Similar to previous errors, try resetting the power to the dishwasher first. Turn off the breaker for 30 seconds to see if the issue clears.
If the error persists, it’s recommended to contact Bosch Customer Support for further troubleshooting.
Their experts can diagnose the specific problem with the detergent dispenser solenoid circuit and guide you through additional steps or arrange for a service call if necessary.
E20: Heat Pump Internal Heater Fault/Error
Potential Cause: The E20 error code indicates a fault or error with the heat pump’s internal heater. The heat pump is responsible for heating the water during the wash cycle.
Suggested Solution: Let’s start by resetting the power to the dishwasher. Turn off the breaker supplying power to the appliance and leave it off for about 30 seconds. Then, turn the breaker back on. This simple reset might clear any temporary issues.
If the E20 error code persists, contact Bosch Customer Support for further assistance.
Their trained technicians can diagnose the specific issue with the heat pump’s internal heater and guide you through additional steps or arrange for a repair if needed.
E21: Heat Pump Is Blocked
Potential Cause:
If you encounter the E21 error code, it means the heat pump in your Bosch dishwasher is blocked. This can affect its performance.
Suggested Solution: To address this issue, start by resetting the power to the dishwasher.
Turn off the breaker supplying power to the appliance and leave it off for about 30 seconds. Then, turn the breaker back on. This reset may resolve the problem.
If the E21 error persists, it’s essential to contact Bosch Customer Support for professional help.
Their experts can guide you through further troubleshooting to identify and clear the blockage.
Attempting to fix a blocked heat pump on your own might lead to damage or void the warranty, so it’s best to rely on Bosch’s support team.
E22: Dishwasher Filter Is Blocked
Potential Cause: The E22 error code indicates that the dishwasher filter is blocked, leading to drainage issues. The filter prevents debris from entering the dishwasher pump.
Suggested Solution: To address this problem, follow these steps:
- Turn Off the Dishwasher: First, turn off the dishwasher and unplug it from the power source for safety.
- Locate the Filter: The filter is usually at the bottom of the dishwasher. Consult the dishwasher’s manual to find its exact location.
- Remove the Filter: Gently remove the filter from its position. Be cautious as it might have accumulated debris or food particles.
- Clean the Filter: Rinse the filter under running water to remove any residue. You may use a soft brush or toothbrush to gently clean it.
- Check for Blockages: While the filter is out, inspect the dishwasher’s sump area for any debris or blockages. Remove any foreign materials you find.
- Reinstall the Filter: After cleaning, carefully put the filter back into its original position.
- Restart the Dishwasher: Plug the dishwasher back in and turn it on to see if the E22 error is resolved.
E23: Drain Pump Issue
Potential Cause: If you see the E23 error code on your Bosch dishwasher’s display, it means there is a problem with the drain pump. The drain pump is responsible for removing water from the dishwasher.
Suggested Solution: For this error, it’s essential to contact Bosch Customer Support immediately.
The drain pump is a crucial component for proper drainage after the wash cycle.
Their experts can diagnose the specific issue with the drain pump and guide you through further steps or arrange for a repair if needed.
Attempting to repair or replace the drain pump yourself is not advised, as it requires specialized knowledge and can void the warranty.
Timely resolution of the E23 error is essential to prevent water-related issues and ensure the dishwasher’s efficient performance.
E24: Drain Filter Being Blocked
Potential Cause: The E24 error code indicates that the drain filter might be blocked, causing drainage problems.
Suggested Solution: To address this issue, follow these steps:
- Turn Off the Dishwasher: First, turn off the dishwasher and unplug it from the power source for safety.
- Locate the Drain Filter: The drain filter is usually at the bottom of the dishwasher, near the drain pump. Consult the dishwasher’s manual to find its exact location.
- Remove the Drain Filter: Gently remove the drain filter from its position. Be cautious as it might have accumulated debris or food particles.
- Clean the Drain Filter: Rinse the drain filter under running water to remove any residue. You may use a soft brush or toothbrush to gently clean it.
- Check for Blockages: While the drain filter is out, inspect the dishwasher’s sump area for any debris or blockages. Remove any foreign materials you find.
- Reinstall the Drain Filter: After cleaning, carefully put the drain filter back into its original position.
- Restart the Dishwasher: Plug the dishwasher back in and turn it on to see if the E24 error is resolved.
E25: Drain Pump Blocked or Cover Is Loose
Potential Cause: The E25 error code suggests that the drain pump might be blocked, or its cover is loose.
Suggested Solution: To address this issue, follow these steps:
- Turn Off the Dishwasher: First, turn off the dishwasher and unplug it from the power source for safety.
- Locate the Drain Pump: The drain pump is usually at the bottom of the dishwasher, near the drain filter. Consult the dishwasher’s manual to find its exact location.
- Check for Blockages: Inspect the drain pump for any debris or blockages that might be causing the issue. Clear any foreign materials you find.
- Check the Drain Pump Cover: Ensure that the drain pump cover is securely in place and not loose. If it’s loose, tighten it properly.
- Restart the Dishwasher: Plug the dishwasher back in and turn it on to see if the E25 error is resolved.
E27: House Power Supply to the Unit Is Too Low
Potential Cause: If you encounter the E27 error code, it means the house power supply to your Bosch dishwasher is too low. This can affect the dishwasher’s performance.
Suggested Solution: To troubleshoot this issue, start by resetting the power to the dishwasher. Turn off the breaker supplying power to the appliance and leave it off for about 30 seconds. Then, turn the breaker back on. This reset may resolve the problem.
If the E27 error occurs again, it’s essential to contact an electrician for further assessment.
The low power supply issue might be related to the electrical system in your home.
The electrician can identify and address the specific problem to ensure the dishwasher receives the required power for its efficient operation.
Factors That Influence Bosch Dishwasher Error Occurrences
Water Quality and Hardness
Water quality and hardness play a significant role in the occurrence of Bosch dishwasher errors.
Hard water contains high levels of minerals like calcium and magnesium, which can lead to limescale build-up in the dishwasher’s internal components.
Regular descaling is essential to prevent errors caused by limescale accumulation.
Detergent Usage and Dispensing
Using the right detergent and proper dispensing are crucial for a dishwasher’s performance.
Using the wrong detergent or overloading the dispenser can lead to detergent residue build-up or insufficient cleaning, triggering error codes like E19.
Inlet Hose and Water Supply
The inlet hose supplies water to the dishwasher. If the hose is kinked, damaged, or the water supply pressure is too low, errors like E16/E17 or E18 may occur.
Regularly check the inlet hose for any issues to ensure a smooth water supply.
Filters and Drainage System
Filters in the dishwasher prevent debris from entering essential components.
If filters are clogged, it can hinder drainage, leading to errors like E15 or E24. Regularly clean and maintain filters to avoid drainage problems.
Door and Door Seal
A proper door seal ensures a watertight seal during operation.
Damaged or misaligned door seals can lead to water leakage and errors like E15. Check and replace damaged door seals promptly.
Power Supply and Electrical Issues
Problems with the power supply or electrical components can cause various error codes.
Ensure a stable power source and avoid overloading electrical circuits to prevent errors like E27.
Conclusion
Being familiar with the common Bosch dishwasher error codes empowers you to troubleshoot and resolve potential issues effectively.
Remember to start with a simple reset, but don’t hesitate to seek Bosch Customer Support for expert assistance when needed.
Regular maintenance, such as descaling and filter cleaning, will keep your dishwasher running smoothly.
By addressing errors promptly, you can ensure a reliable and efficient appliance that delivers spotless dishes every time. Happy dishwashing!
