Bosch Refrigerator E2 Error Code Explained

Bosch refrigerators have an internal diagnostic system that can identify problems within the appliance and alert you with a specific error code. This tells you exactly what is wrong with your refrigerator so you can fix it quickly.

This guide covers popular Bosch refrigerator models, including:

B22CS80SNS/01

B22CS80SNS/02

B22CS80SNS/03

B36IT70NNP/08

B36IT71NNP/11

KFU5750

KFU5755

KGU5950BS

KGU5955BS

KGU6465BS

KGU6650

KGU6651

KGU6695

KGU6940BS

KGU6945BS

KSU5820NE

T18BD80FLE

T18BF70FSE

T24BR70FSE

T30BR70FSE

T36BT71FSE

What does the E2 error code mean on my Bosch refrigerator?

If the E2 error code is showing on the display screen of your Bosch refrigerator, it means the freezer compartment temperature sensor is defective and is unable to properly monitor the temperature. 

How do I fix the E2 error code on my Bosch refrigerator?

Fixing the underlying cause of the E2 error code involves checking the wire harnesses that are connected to the temperature sensor in your freezer compartment. If faulty, the wire harnesses will need to be replaced. If the wires are fine, you may need to replace the whole sensor component. 

Here’s how to fix the E2 error code on your Bosch refrigerator:

1. Switch the power off to your refrigerator.
2. Locate the temperature sensor in your freezer compartment.
3. Once located, disconnect the wire harness that is connected to the sensor.
4. Inspect the wires for any signs of damage.
5. If damaged, the wire harness will need to be replaced.
6. If the wire harness isn’t damaged, consider replacing the freezer compartment temperature sensor or get a technician to inspect your refrigerator or replace the sensor.
7. If you replace the wire harness or the sensor unit, you will need to check if the error code has stopped showing. This can be done by turning your fridge back on, which will reset your appliance. If the code is still showing, you will need to get a technician to come and inspect your Bosch refrigerator.

How to fix other common Bosch refrigerator error codes

There are several common error codes that your Bosch refrigerator will show when it detects a problem. Here are some of the most common.

Bosch refrigerator error code E01 

The E01 error code indicates a problem with the refrigerator compartment temperature sensor (as opposed to the E02 error code, which indicates an issue with the freezer compartment temperature sensor). To fix the underlying cause of the code, switch the power off to your appliance and locate the temperature sensor. 

Once located, unplug the wire harness and check it for any defects. If damaged, replace the wire harness. If it’s not damaged, consider replacing the whole sensor unit. Alternatively, call a technician to come and inspect your fridge.

Bosch refrigerator error code E03 

This code means the temperature-controlled drawer temperature sensor is faulty. To fix the underlying cause of the code, switch the power off to your appliance and locate the temperature sensor in the temperature-controlled drawer. 

Once located, unplug the wire harness and check it for any defects. If damaged, replace the wire harness. If it’s not damaged, consider replacing the whole sensor unit. Alternatively, call a technician to come and inspect your fridge.

Bosch refrigerator error code E15 

This code indicates a problem with the ambient temperature sensor. The purpose of the sensor is to assist the display control module to operate correctly. To remove the code, switch your appliance off. After a few minutes, turn the fridge back on. 

This should reset the display control module and the code should stop showing. If not, the display control module may need to be replaced.

Bosch refrigerator error code E10

The E10 code means there is a problem with the main control board in your appliance. To remove the code, switch your fridge off. After a few minutes, turn the fridge back on. 

This should reset the display control module and the code should stop showing. If not, the main control board is likely defective and must be replaced.

Bosh refrigerator error code E11

This code means the display control module is faulty. You can attempt to remove the code by resetting your appliance. This can be done by switching your machine off for a few minutes before turning it back on. 

This should reset the display control module and the code should stop showing. If not, the display control module may need to be replaced.

Bosh refrigerator error code E20 

The E20 error code on your Bosch refrigerator indicates the main control board cannot properly communicate with the display control module. To remove the code, switch your appliance off and locate the main control board and display control module. 

Once located, disconnect the wire harnesses and check them for any damage. If damaged, new wiring will need to be installed. If the wires are fine, reconnect them and check both components for any signs of wear. Again, if damaged, new ones will need to be installed.

Bosh refrigerator error code E21 

This error code means the display control module and the ice and water dispenser control module cannot properly communicate with each other. To remove the code, switch your appliance off and locate both the display control module and the ice and water dispenser control module. 

Once located, disconnect the wire harnesses and check them for any damage. If damaged, install new wiring. If the wires are fine, reconnect them and check both components for any signs of damage. Again, if damaged, replace one or both of them if necessary.