Bosch ovens are known for their efficiency and reliability, but like any appliance, they may encounter technical issues that manifest as error codes. These codes are designed to help diagnose and troubleshoot problems with your oven. In this detailed guide, we’ll go over all possible error codes for Bosch ovens, providing an easy reference for understanding their meanings, causes, and solutions. This article serves as a one-stop solution for all Bosch oven error codes, making it easier to identify and fix issues.
Bosch Oven Error Codes
| Error Code | Meaning | Cause | Possible Fix |
|---|---|---|---|
| Er1 | Temperature Sensor Failure | Damaged temperature sensor or faulty wiring. | Inspect wiring and sensor; replace if necessary. |
| Er2 | Problems with Connection to the Electrical Network | Faulty power supply connection or control module. | Check main supply, terminal connections, and control module. |
| Er3 | Overheating of the Oven | Malfunctioning cooling fans or improper ventilation. | Turn off oven, allow cooling, check airflow. |
| Er6 | Defective Door Lock | Broken or defective door lock mechanism. | Inspect and replace door lock if faulty. |
| Er8 | Problems In The Circuit | Malfunction in wiring or control board. | Professional repair needed to diagnose circuit issues. |
| E005 | Protective Relay Won’t Turn On | Fault in the relay or related electrical components. | Turn off and on to reset; replace relay if necessary. |
| E011 | Long Pressing of One Button | Moisture or debris in control panel. | Clean control panel thoroughly. |
| E115 | The Temperature Is Too High | Malfunctioning temperature sensor or cooling system. | Turn off oven and allow cooling; inspect components. |
| E305 | No Connection Between Baseplates | Failure in communication between components. | Turn off and wait before restarting; check connections. |
| F31 | Oven Temperature Sensor Failure | Dirt on sensor probe or connection issues. | Clean sensor probe and check connections. |
| F33 | Drawer Sensor Failure | Non-critical error, mostly if infrequently used. | Inspect sensor; ignore if drawer isn’t used often. |
| F41 | Faulty Latch Motor or Wiring | Malfunction in latch motor or wiring issues. | Inspect switches and wiring; replace faulty components. |
| F43 | Motorized Latch Will Not Unlock | Jammed or malfunctioning latch motor. | Lubricate latch; replace if issues persist. |
| F45 | Faulty or Jammed Upper Oven Door | Mechanical issues with door lock or latch. | Inspect and ensure no obstructions; replace lock if needed. |
Common Bosch Oven Error Codes
Er1 – Temperature Sensor Failure
Meaning: The oven’s temperature sensor is malfunctioning or not reading correctly.
Cause: This error is typically caused by a damaged temperature sensor or faulty wiring connected to the sensor.
Possible Fix:
- Inspect the wiring of the temperature sensor for damage or disconnection.
- Check the sensor itself for any signs of wear or malfunction.
- If the wiring and sensor appear to be in good condition, the issue may lie with the control module, which may need replacement.
- Tip: This issue may require assistance from a professional appliance technician to fix.
Er2 – Problems with Connection to the Electrical Network
Meaning: There’s an issue with the incoming power or control module in the oven.
Cause: This error often arises due to a faulty power supply connection or control module malfunction.
Possible Fix:
- Ensure that the main power supply to the oven is within the correct operating range.
- Check the terminal connection block for any faults or loose connections.
- If the control module is faulty, replacing it may be necessary.
Er3 – Overheating of the Oven
Meaning: The oven has overheated beyond its safety temperature limits.
Cause: The overheating could be due to malfunctioning cooling fans or improper ventilation.
Possible Fix:
- Turn off the oven and allow it to cool down.
- Ensure that there is proper airflow and ventilation around the oven.
- Check and repair or replace any malfunctioning cooling fans if necessary.
Er6 – Defective Door Lock
Meaning: The oven’s door lock is not functioning properly.
Cause: This error is caused by a broken or defective door lock mechanism.
Possible Fix:
- Inspect the door lock for visible damage.
- Replace the door lock if it is determined to be faulty.
Er8 – Problems In The Circuit
Meaning: There is an issue with the oven’s internal circuit.
Cause: This error typically points to a malfunction in the wiring or the control board.
Possible Fix:
- This issue generally requires professional repair, as it involves diagnosing the internal circuit for faults and addressing wiring issues.
Additional Bosch Oven Error Codes
E005 – Protective Relay Won’t Turn On
Meaning: The protective relay is not activating properly.
Cause: A fault in the relay or related electrical components may be causing the issue.
Possible Fix:
- Turn the oven off and back on to reset the relay.
- If the error persists, inspect the protective relay for damage and replace it if necessary.
E011 – Long Pressing of One Button
Meaning: One of the oven’s buttons has been pressed for an extended period, or dirt/moisture has compromised the control panel.
Cause: Water or debris entering the control panel may cause this error.
Possible Fix:
- Clean the control panel thoroughly, ensuring that no moisture or dirt is present.
- If the issue continues, the control panel may need to be serviced or replaced.
E115 – The Temperature Is Too High
Meaning: The oven temperature is above safe operating levels.
Cause: This may be due to a malfunctioning temperature sensor or cooling system.
Possible Fix:
- Turn off the oven and allow it to cool down.
- Inspect the temperature sensor and the cooling fans, replacing any faulty components as necessary.
E305 – No Connection Between Baseplates
Meaning: There is no connection between the oven’s internal baseplates.
Cause: A failure in communication between critical components of the oven is the usual cause.
Possible Fix:
- Switch the oven off and wait for a few minutes before turning it back on.
- If the problem persists, check the connections between the baseplates and ensure they are secure.
Oven-Specific Error Codes
F31 – Oven Temperature Sensor Failure
Meaning: The oven is unable to read its internal temperature accurately.
Cause: This error is often caused by dirt on the sensor probe or a malfunction in the sensor’s connection.
Possible Fix:
- Clean the sensor probe to remove any dirt or debris.
- Check the sensor plug for secure connection and repair if necessary.
- If the sensor itself is faulty, it may need to be replaced.
F33 – Drawer Sensor Failure
Meaning: The drawer sensor has detected an issue.
Cause: This is a non-critical error, particularly if the drawer is not used frequently.
Possible Fix:
- If the drawer is seldom used, this error can be ignored.
- If the drawer is in regular use, inspect the sensor and replace it if required.
F41 – Faulty Latch Motor or Wiring
Meaning: There is an issue with the latch motor or its wiring.
Cause: A malfunction in the latch motor or a loose connection in the wiring can cause this error.
Possible Fix:
- Inspect the latch switches to ensure they are functioning correctly.
- Check that the latch wiring is secure and not damaged.
- If necessary, replace the faulty latch motor or wiring.
F43 – Motorized Latch Will Not Unlock
Meaning: The motorized latch is stuck in the locked position.
Cause: A jammed or malfunctioning latch motor could cause this error.
Possible Fix:
- Lubricate the latch to ensure smooth movement.
- Use a pick to gently pry the door open.
- Inspect the door hinges and gasket, replacing them if necessary.
- Replace the latch motor if the error persists.
F45 – Faulty or Jammed Upper Oven Door
Meaning: The upper oven door is either jammed or malfunctioning.
Cause: This could be due to a mechanical issue with the door lock or latch.
Possible Fix:
- Inspect the upper door lock and latch for visible issues.
- Ensure that there are no obstructions preventing the door from closing or opening properly.
- Replace the faulty door lock mechanism if needed.
Conclusion: Ensuring Optimal Performance of Your Bosch Oven
Bosch oven error codes are designed to help users identify issues with their appliances quickly. While some of these problems can be resolved at home by following the troubleshooting steps provided in this guide, others may require the expertise of a professional technician. Regular maintenance, cleaning, and checking components like temperature sensors and wiring can help prevent many of these errors from occurring.