Bosch refrigerators are known for their high quality and cutting-edge technology, ensuring optimal food preservation. However, like any sophisticated appliance, they can experience malfunctions. When this happens, Bosch refrigerators display error codes to help users diagnose and troubleshoot issues. In this comprehensive guide, we’ll cover all the possible error codes for Bosch refrigerators, providing a one-stop solution for understanding what they mean, their causes, and how to fix them.
Bosch Refrigerator Error Codes
| Error Code | Meaning | Cause | Possible Fix |
|---|---|---|---|
| E01 | Refrigerator compartment temperature sensor is faulty | Faulty sensor in the refrigerator compartment | Inspect and replace the faulty sensor |
| E02 | Freezer compartment temperature sensor is faulty | Defective freezer temperature sensor | Replace the freezer compartment temperature sensor |
| E03 | Temperature-controlled drawer temperature sensor is faulty | Malfunction in the temperature-controlled drawer sensor | Replace the faulty sensor in the temperature-controlled drawer |
| E10 | Main control board module is faulty | Malfunctioning main control board | Replace the main control board module |
| E11 | The display control module is faulty | Faulty display control module | Replace the display control module |
| E15 | Ambient temperature sensor is faulty | Defective ambient temperature sensor | Inspect and replace the ambient temperature sensor |
| E20 | Communication error between the main control board and display control module | Wiring issue or defective control boards | Check wiring and control boards for malfunctions |
| E21 | Communication error between display and ice/water dispenser control module | Faulty wiring or control modules | Inspect wiring and modules, replace if needed |
| LOCK | Lock for changing settings is enabled | Settings locked to prevent accidental changes | Disable lock function by following instructions for your model |
| The + button is lit | Temperature inside the refrigerator is rising | Cold air leakage or faulty temperature sensor | Check for air leaks and replace temperature sensor if necessary |
| ALL/AU | System warning alarm off | Elevated freezer temperature | Diagnose and resolve cause of the temperature increase |
| Flashing 4 | Door cable damage | Loose or damaged door cable | Tighten connections or replace the damaged cable |
| h0 / ho / НО | No-Frost defrost system is damaged | Defective thermostat or defrost heating element | Check and replace the faulty components |
| EA200 | Pressure level sensor is faulty | Defective pressure sensor in the engine | Replace the faulty pressure sensor |
| Error 01 | Damage to the control module | Faulty control module | Contact the service center for module repair |
| Error 15 | Damage to the control module | Faulty control module | Contact the service center for module repair |
| Error 06 | Door is not closed tightly | Faulty door close sensor | Check door sensor and ensure door is closed properly |
| Е1/R1 | Refrigerator compartment temperature sensor failure | Sensor or wiring malfunction | Tighten connections, replace sensor or wiring |
| Е2 | Evaporator sensor in the refrigerator is faulty | Defective evaporator sensor | Replace the faulty evaporator sensor |
| Е3/F1 | Freezer temperature sensor does not signal | Broken freezer temperature sensor | Replace the sensor urgently |
| Е4 | Condenser sensor in the freezer is broken | Defective condenser sensor | Inspect connections and repair or replace the sensor |
| РТ | Electronic module not working correctly | Faulty element in the electronic module | Diagnose and test module parts, replace faulty elements |
| D1 | Sensor on the rib has failed | Defective rib sensor | Replace the rib sensor |
| DR | Door sensor has tripped | Loose door, sagging hinges, or damaged seal | Close door tightly, adjust hinges, replace or clean seal |
| DF | Freezer door open/close switch does not operate | Faulty door switch or connections | Check switch, reinstall, or replace it |
| EF | Flow sensor or solenoid valve not functioning | Faulty flow sensor or solenoid valve | Diagnose and repair or replace the faulty part |
| ET | Horizontal switch does not work | Defective horizontal switch | Replace the faulty switch |
| EC | On/Off key is stuck | Faulty or stuck key | Inspect and replace the On/Off key |
| ES | Ice/water switch lever does not work | Faulty lever, switch, or wiring | Diagnose and replace damaged components |
| EA | Freezer motor does not work | Freezer motor failure | Inspect and replace the faulty motor |
| EG | Inlet valve not working | Faulty water inlet valve | Inspect the valve and replace if necessary |
| AL | Temperature increase in the compartment | Cooling system failure or door left open | Ensure door is closed and inspect the cooling system |
Common Bosch Refrigerator Error Codes
E01 – Refrigerator Compartment Temperature Sensor Faulty
When the refrigerator compartment temperature sensor is faulty, the appliance may not maintain the correct cooling levels.
- Cause: A failure in the sensor or a wiring issue.
- Possible Fix: Inspect and replace the refrigerator compartment temperature sensor or check for any loose or damaged wiring.
E02 – Freezer Compartment Temperature Sensor Faulty
This error indicates a malfunction in the freezer’s temperature sensor, which may result in improper cooling.
- Cause: Faulty sensor or wiring issues.
- Possible Fix: Replace the freezer temperature sensor or repair any wiring faults.
E03 – Temperature-Controlled Drawer Sensor Faulty
The sensor for the temperature-controlled drawer is not functioning correctly.
- Cause: Sensor failure or connection issues.
- Possible Fix: Check the drawer’s sensor and wiring, replacing faulty components.
E10 – Main Control Board Module Faulty
This code appears when the main control board module experiences a malfunction.
- Cause: A damaged or defective main control board.
- Possible Fix: Replace the main control board module to restore proper function.
E11 – Display Control Module Faulty
This error suggests that the display control module is not working correctly.
- Cause: A hardware malfunction or connection issue.
- Possible Fix: Inspect the display control module and replace it if necessary.
E15 – Ambient Temperature Sensor Faulty
The ambient temperature sensor, which monitors the external temperature, is malfunctioning.
- Cause: Sensor failure or communication problems.
- Possible Fix: Replace the ambient temperature sensor.
E20 – Communication Error Between Main Control Board and Display Module
This code indicates a communication problem between the main control board and the display control module.
- Cause: Wiring issues or faulty modules.
- Possible Fix: Inspect the connections between the main control board and the display module, and replace any defective parts.
E21 – Communication Error Between Display and Ice/Water Dispenser Module
A communication error between the display control module and the ice/water dispenser control module can lead to this error.
- Cause: Connection problems or wiring faults.
- Possible Fix: Check the wiring and communication pathways, repairing or replacing components as needed.
Inscription Errors and Messages
LOCK – Settings Change Lock Enabled
This error occurs when the lock that prevents accidental setting changes is enabled.
- Cause: The lock function is activated, either intentionally or unintentionally.
- Possible Fix: Refer to the model’s manual to disable the lock feature.
The + Button is Lit – Temperature Rises Without Apparent Cause
This error suggests that the temperature inside the refrigerator is increasing unexpectedly.
- Cause: Air leaks from a poor door seal or a malfunctioning temperature sensor.
- Possible Fix: Check the door seal for leaks, and inspect or replace the temperature sensor.
ALL/AU – System Warning Alarm OFF
This code indicates that the freezer temperature is higher than normal.
- Cause: A malfunction in the freezer or cooling system.
- Possible Fix: Identify and resolve the cause of the temperature increase, such as defrosting the unit or repairing any cooling system issues.
Flashing “4” – Door Cable Damage
If the number “4” is flashing, it signals a potential issue with the door cable.
- Cause: The door may have been repositioned incorrectly, causing cable damage.
- Possible Fix: Secure the door cable, tighten any loose connections, or replace the damaged cable.
System and Sensor Errors
h0 / ho / НО – No-Frost Defrost System Malfunction
This error indicates a problem with the No-Frost defrost system, which prevents ice build-up in the fridge and freezer.
- Cause: Thermostat malfunction or faulty defrost heating element.
- Possible Fix: Inspect the thermostat and heating element, replacing them if necessary.
EA200 – Pressure Level Sensor Faulty
The pressure level sensor in the refrigerator is not functioning properly.
- Cause: A defective pressure sensor.
- Possible Fix: Replace the faulty pressure sensor to restore functionality.
Control Module and Door Sensor Errors
Error 01 & Error 15 – Control Module Damage
These error codes signal that the control module has malfunctioned.
- Cause: A fault in the control board or one of its elements.
- Possible Fix: Contact a service center for control module repairs or replacement.
Error 06 – Door Not Closed Properly
This error occurs when the refrigerator detects that the door is not closed tightly.
- Cause: A faulty door sensor or a misaligned door.
- Possible Fix: Check the door sensor and ensure that the door is properly aligned. Repair or replace any faulty parts.
Temperature and Evaporator Sensor Errors
Е1 / R1 – Refrigerator Temperature Sensor Faulty
This code indicates that the refrigerator’s temperature sensor is malfunctioning.
- Cause: A defective or disconnected temperature sensor.
- Possible Fix: Inspect the sensor and its wiring, replacing any damaged components.
Е2 – Evaporator Sensor Faulty
The evaporator sensor is malfunctioning, leading to temperature fluctuations and potential ice build-up.
- Cause: Sensor failure or wiring issue.
- Possible Fix: Replace the evaporator sensor and check for ice build-up in the evaporator system.
Е3 / F1 – Freezer Temperature Sensor Not Responding
This error occurs when the freezer’s temperature sensor fails to provide a signal.
- Cause: A faulty sensor or wiring problem.
- Possible Fix: Replace the freezer temperature sensor.
Additional Bosch Refrigerator Error Codes
DR – Door Sensor Error
This error indicates an issue with the door sensor, possibly caused by a door that is not closed properly.
- Cause: Door misalignment, worn hinges, or faulty rubber seals.
- Possible Fix: Close the door properly, tighten the hinges, or replace worn-out rubber seals.
DF – Freezer Door Open/Close Switch Not Operating
This code appears when the freezer door’s open/close switch is malfunctioning.
- Cause: A stuck or malfunctioning switch.
- Possible Fix: Inspect and replace the freezer door switch.
EF – Flow Sensor or Solenoid Valve Not Functioning
This error relates to a malfunction in the water flow sensor or the solenoid valve.
- Cause: A faulty flow sensor or solenoid valve responsible for controlling the water flow to the ice maker or water dispenser.
- Possible Fix: Diagnose the flow sensor and solenoid valve for faults and replace them if necessary.
ET – Horizontal Switch Not Working
This error occurs when the horizontal switch fails to function correctly.
- Cause: A defective or stuck switch.
- Possible Fix: Replace the faulty horizontal switch to restore functionality.
EC – On/Off Key Stuck
The refrigerator detects that the On/Off key is stuck or malfunctioning.
- Cause: The key could be physically stuck or have an internal malfunction.
- Possible Fix: Inspect the On/Off key and replace it if it is damaged or not functioning properly.
ES – Ice/Water Switch Lever Not Working
This code relates to a malfunction in the ice or water switch lever, making it impossible to dispense ice or water.
- Cause: Faulty lever, wiring, or switch connections.
- Possible Fix: Diagnose the switch and lever, and replace any damaged or malfunctioning components.
EA – Freezer Motor Not Working
This error indicates that the freezer motor has stopped functioning.
- Cause: A malfunction in the freezer motor, which could be due to wiring or mechanical failure.
- Possible Fix: Check the freezer motor for any signs of malfunction and replace it if it shows no signs of working.
EG – Inlet Valve Not Working
This code points to a malfunction in the inlet valve that controls the water supply for the ice maker.
- Cause: A faulty water inlet valve.
- Possible Fix: Inspect the inlet valve and replace it if necessary to restore the water supply to the ice maker.
AL – Temperature Increase in the Compartment
This error appears when the temperature in the refrigerator or freezer rises to unsafe levels.
- Cause: Possible cooling system failure or a door left open.
- Possible Fix: Ensure the door is closed tightly and inspect the cooling system for any issues. Defrost the unit if necessary.
Additional Bosch Refrigerator Models and Error Codes
Bosch has multiple refrigerator models with various error codes. Here are some model-specific codes:
KIx, KGV, KGN, KAN, KGS
These codes are specific to different Bosch refrigerator models, which could have unique issues related to temperature sensors, cooling systems, and electronic components. While the error codes may vary slightly between these models, the root causes and troubleshooting solutions remain consistent across the Bosch refrigerator lineup.
General Troubleshooting Tips for Bosch Refrigerators
- Reset the Refrigerator: Sometimes, simply resetting the refrigerator by unplugging it for 5-10 minutes and then plugging it back in can clear minor software glitches.
- Check for Software Updates: Some Bosch models have firmware that may need updates. Check the user manual or contact Bosch support for instructions on updating your refrigerator’s software.
- Inspect the Wiring and Connections: Many error codes are caused by faulty wiring or loose connections. Carefully inspect the wiring between the control board, sensors, and other components to ensure everything is securely connected.
- Defrost the Refrigerator: If your refrigerator is experiencing issues with cooling or ice build-up, defrosting the unit might resolve the problem.
- Contact Bosch Customer Support: If you are unable to resolve the issue on your own, contact Bosch’s service center for further assistance. Some problems, especially those involving control boards and complex components, require professional service.
Conclusion
Bosch refrigerators are designed to provide reliable performance, but they can still encounter issues, which are typically displayed via error codes. By understanding these codes and their corresponding causes, you can troubleshoot and fix many common problems without needing professional help. From sensor malfunctions to communication errors between control modules, this guide offers a comprehensive solution for addressing Bosch refrigerator error codes.