Bosch dishwashers are known for their quality and reliability, but like any appliance, they may encounter issues over time. When a Bosch dishwasher encounters a problem, it typically displays an error code to indicate the type of malfunction. Understanding these error codes is crucial for diagnosing and fixing the issue, which can save time and prevent the need for professional repair. This comprehensive guide provides all the Bosch dishwasher error codes, their meanings, causes, and potential solutions, making it your one-stop reference for troubleshooting.

Bosch Dishwasher Error Codes

Error Code Meaning Cause Possible Fix
E01 Water inlet issue Clogged water supply or faulty valve Check water supply, hose, and inlet valve.
E02 Drainage problem Blocked drain hose or filter Clean filter and check drain hose for blockages.
E03 Temperature error Water temperature too high Check water heater settings; ensure correct installation.
E04 Heating error Faulty heating element Test heating element; replace if defective.
E05 Water leakage detected Leak in the appliance Inspect for leaks; replace damaged parts.
E06 Control board issue Faulty control board Reset dishwasher; replace control board if error persists.
E07 Door latch problem Door not closing properly Check door alignment; replace latch if damaged.
E09 Electrical issue Faulty wiring or connection Inspect wiring; repair or replace damaged components.
E10 Salt reservoir error Salt container empty or blocked Refill salt; clean reservoir if necessary.
E12 Drain pump error Blocked or malfunctioning drain pump Clean drain pump; replace if defective.
E14 Water sensor issue Faulty water level sensor Check sensor; replace if faulty.
E15 Water overflow detected Excess water in the base Check for leaks; inspect float switch.
E16 Low water issue Water supply not reaching the dishwasher Check supply line and inlet valve.
E17 Water inlet delay Delayed water supply Check supply line; ensure no kinks.
E18 Water drainage timeout Drainage taking too long Clean filter and drain hose; check for blockages.
E19 Unidentified error General appliance malfunction Reset the dishwasher; contact support if persistent.
E20 Temperature sensor error Faulty temperature sensor Test sensor; replace if necessary.
E21 Door switch malfunction Faulty door switch Test door switch; replace if defective.
E22 Overflow protection activated Water detected in the base Inspect for leaks; clear water from base.
E23 Sensor error Faulty sensors Check and replace faulty sensors.
E24 Blocked drain hose Clogged drain hose Clear any blockages in the drain hose.
E25 Not draining properly Blocked filter or pump Clean filter and check the pump for obstructions.
E27 Water pressure issue Low water pressure Check home water pressure; ensure hoses are clear.
E0100 Control module error Faulty control module Reset appliance; replace module if issue persists.
E0103 Data communication error Connection issue between components Check connections; repair or replace as needed.
E0105 Software error Corrupt software Update software via service mode.
E0106 Sensor calibration issue Calibration error of sensors Recalibrate sensors; refer to service manual.
E0107 General fault Undetermined error Reset dishwasher; contact support for assistance.
E0110 Device malfunction Faulty component Inspect components; replace if necessary.
E2030 Drying function error Drying cycle failure Check heating element; replace if faulty.
E2060 Fan error Faulty drying fan Inspect fan; replace if defective.
E2120 Water hardness issue Incorrect water hardness setting Adjust settings; check water quality.
E2130 Descaling reminder Need for descaling Run descaling program.
E3000 Electrical fault Power supply issue Check electrical connections; consult an electrician.
E3100 Signal error Weak signal Ensure proper installation and signal strength.
E3200 Communication error Issues with internal communication Reset the appliance; contact support if it persists.
E3300 Water supply issue Insufficient water supply Check water supply and hoses.
E3400 Water outlet issue Drainage problems Inspect drain for blockages; clear as needed.
E6001 General failure Unspecified internal error Reset appliance; seek professional help if necessary.
E6002 Data error Fault in data processing Inspect wiring; replace control board if needed.
E6101 Low voltage detected Insufficient voltage supply Check electrical supply; consult an electrician.
E6102 High voltage detected Over voltage supply Inspect electrical supply; contact a professional.
E6103 Voltage fluctuation Instability in voltage Use a voltage stabilizer; consult an electrician.
E6160 External power supply issue Problems with external supply Check connections and circuit integrity.
E6900 Internal fault General malfunction Reset the appliance; seek professional help if necessary.
E8000 Hardware failure Critical component failure Inspect and replace faulty components.
E9001 System error Fault in system operation Reset dishwasher; contact customer support if it continues.
E9240 Invalid setting Configuration mismatch Check settings; restore factory settings if needed.
H01 Heating error Heating system malfunction Inspect heating element; replace if necessary.

Common Bosch Dishwasher Error Codes

Error Code E01

  • Meaning: Heat pump failure.
  • Cause: The heat pump or its connections may be faulty, preventing the dishwasher from heating the water properly.
  • Solution: Check the heat pump and its wiring for issues. Replace the heat pump if necessary.

Error Code E02

  • Meaning: Water filling issue.
  • Cause: The water inlet valve may be malfunctioning, or there may be insufficient water pressure.
  • Solution: Ensure the water supply is sufficient, check the water inlet valve, and replace it if defective.

Error Code E03

  • Meaning: Temperature sensor failure.
  • Cause: A faulty temperature sensor can prevent the dishwasher from accurately detecting water temperature.
  • Solution: Inspect the temperature sensor for damage or loose connections and replace it if needed.

Error Code E04

  • Meaning: Flow sensor issue.
  • Cause: The flow sensor may not be detecting water flow correctly, leading to improper water circulation.
  • Solution: Check the flow sensor for debris or damage and clean or replace it as required.

Error Code E05

  • Meaning: Spray arm malfunction.
  • Cause: Blockages or damage to the spray arms can prevent water from reaching all areas of the dishwasher.
  • Solution: Clean or replace the spray arms to ensure proper water distribution.

Error Code E06

  • Meaning: Door not closed properly.
  • Cause: The door may not be latching correctly, or the door sensor might be malfunctioning.
  • Solution: Ensure the door is fully closed and latched. If the issue persists, check the door lock mechanism.

Error Code E07

  • Meaning: Drying system failure.
  • Cause: The drying fan or heating element may not be working correctly, affecting the drying cycle.
  • Solution: Inspect the drying system components, such as the fan or heating element, and replace faulty parts.

Error Code E09

  • Meaning: Heating element failure.
  • Cause: The heating element may be broken, preventing the dishwasher from heating the water.
  • Solution: Replace the faulty heating element.

Error Code E10

  • Meaning: Water level detection failure.
  • Cause: The dishwasher may be unable to detect the correct water level due to a faulty pressure switch or blockages.
  • Solution: Clean the water lines and inspect the pressure switch for defects.

Water-Related Bosch Dishwasher Error Codes

Error Code E12

  • Meaning: Lime scale buildup on the heating element.
  • Cause: Hard water can cause calcium buildup on the heating element.
  • Solution: Descale the dishwasher using a dishwasher cleaner to remove mineral deposits.

Error Code E14

  • Meaning: Flow sensor malfunction.
  • Cause: Water is not entering the appliance at the correct rate.
  • Solution: Check the water inlet valve and ensure proper water pressure to fix this issue.

Error Code E15

  • Meaning: Water leak detected.
  • Cause: Water may be present in the base tray of the dishwasher due to a leak.
  • Solution: Inspect for leaks, ensure proper drainage, and repair any damaged parts.

Error Codes E16 & E17

  • Meaning: Water filling issues.
  • Cause: Either too much or too little water is entering the dishwasher.
  • Solution: Check the water supply, hoses, and inlet valve to ensure they are functioning correctly.

Error Code E18

  • Meaning: Water flow problem.
  • Cause: The water supply hose might be blocked, kinked, or faulty.
  • Solution: Check and clear any obstructions in the hose and ensure proper water flow.

Error Code E19

  • Meaning: Faulty heat exchanger.
  • Cause: The heat exchanger may be malfunctioning, affecting the dishwasher’s heating and drying functions.
  • Solution: Inspect the heat exchanger and replace it if necessary.

Drainage and Pump-Related Bosch Dishwasher Error Codes

Error Code E20

  • Meaning: Circulation pump failure.
  • Cause: The circulation pump may be blocked or malfunctioning.
  • Solution: Check the pump for blockages and replace it if it is defective.

Error Code E21

  • Meaning: Drain pump malfunction.
  • Cause: The drain pump may be blocked or faulty, causing drainage issues.
  • Solution: Clean the drain pump and filter, and replace the pump if it is not functioning correctly.

Error Code E22

  • Meaning: Blocked filter.
  • Cause: The dishwasher’s filter is clogged with debris.
  • Solution: Clean the filter to restore proper water flow.

Error Code E23

  • Meaning: Drain pump failure.
  • Cause: The drain pump may have an electrical fault.
  • Solution: Replace the drain pump if it is not working.

Error Code E24

  • Meaning: Drain hose blockage.
  • Cause: The drain hose may be kinked or blocked, preventing proper drainage.
  • Solution: Inspect and clean the drain hose to resolve the issue.

Error Code E25

  • Meaning: Blocked impeller.
  • Cause: Food debris may be obstructing the pump impeller.
  • Solution: Clean the pump impeller and filter to remove any blockages.

Electrical and Control Board Error Codes

Error Code E27

  • Meaning: Low voltage error.
  • Cause: The dishwasher is receiving insufficient electrical voltage.
  • Solution: Check the power supply and ensure that the appliance is receiving adequate voltage.

Error Codes E0100 – E0110

  • Meaning: Faulty control board.
  • Cause: There is an issue with the control board or its communication with other components.
  • Solution: Inspect the control board and replace it if it is damaged or malfunctioning.

Error Codes E2030 – E2130

  • Meaning: Sensor or wiring issues.
  • Cause: Faulty wiring or sensor malfunctions may be disrupting normal operation.
  • Solution: Check the wiring and sensors for damage and repair or replace them as needed.

Error Codes E3000 – E3400

  • Meaning: Communication errors.
  • Cause: There is an issue with the communication between components of the control board.
  • Solution: Reset the dishwasher or inspect the control board for any faults.

Error Codes E6001 – E6160

  • Meaning: Control board failures.
  • Cause: Problems within the control board or its internal electronics.
  • Solution: Replace the control board if necessary.

Error Codes E6900 – E9240

  • Meaning: Software or firmware issues.
  • Cause: Internal communication problems or corrupted software may be the cause.
  • Solution: Perform a factory reset or update the firmware of the dishwasher.

Temperature and Heating Bosch Dishwasher Error Codes

Error Code E8000

  • Meaning: Heating circuit malfunction.
  • Cause: The heating element or temperature sensor may be defective.
  • Solution: Replace the heating element or temperature sensor as needed.

Error Code E9001

  • Meaning: Overheating issue.
  • Cause: The dishwasher may be overheating due to a faulty temperature sensor or control issue.
  • Solution: Inspect and replace the temperature sensor.

Error Code E9240

  • Meaning: Faulty drying system.
  • Cause: There may be issues with the drying fan or heating element, causing ineffective drying.
  • Solution: Inspect the drying system and repair or replace the fan or heating element.

Miscellaneous Bosch Dishwasher Error Codes

Error Code H01

  • Meaning: Delayed start activated.
  • Cause: The dishwasher’s timer delay function has been set.
  • Solution: Cancel the delay start setting or adjust it to run the dishwasher sooner.

Additional Bosch Dishwasher Error Symbols

  • Bosch dishwashers may display additional symbols, such as indicators for low rinse aid, water not heating, or the door not closing properly.
  • Solution: Refer to the user manual for specific details on symbols and their meanings.

Dishwasher Beeping

  • If your Bosch dishwasher is beeping, it may indicate the end of a cycle or an error.
  • Solution: Check for error codes or confirm if the cycle has completed. Refer to troubleshooting if any errors are present.

Conclusion

Understanding Bosch dishwasher error codes can save time and money by allowing you to quickly diagnose and address any issues that arise. Regular maintenance and immediate attention to error codes can extend the lifespan of your appliance and ensure it continues to run efficiently. If you encounter an issue that you cannot resolve, it may be best to contact a Bosch service technician for further assistance.