Bosch  Refrigerator  Side-by-Side Model Error Codes

These error code explanations can help you diagnose a problem with your Bosch side-by-side refrigerator. For repair how-to help, visit the PartsDirect repair help section, which includes repair help for refrigerators, other major appliances, lawn and garden equipment, garage door openers, vacuum cleaners and more. You can also search for owner’s manuals and find refrigerator replacement parts.

Check out our refrigerator error code charts for information on a different brand of refrigerator.

Error Code Condition Check/Repair Shop Parts
E01 Refrigerator compartment temperature sensor is defective Unplug the refrigerator and reconnect any loose connections on the wire harness on the temperature sensor for the refrigerator compartment, which is in the upper right corner of the refrigerator. Replace the wire harness if damaged. If the wire harness connection is okay, replace the refrigerator compartment temperature sensor.
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Refrigerator compartment temperature sensor, Wire harness
E02 Freezer compartment temperature sensor is defective Unplug the refrigerator and reconnect any loose connections on the wire harness on the temperature sensor for the freezer. Replace the wire harness if damaged. If the wire harness connection is okay, replace the freezer compartment temperature sensor.
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Freezer compartment temperature sensor, Wire harness
E03 Temperature-controlled drawer temperature sensor is defective Unplug the refrigerator and remove the temperature-controlled refrigerator drawer. The temperature sensor is on the right side of the refrigerator compartment liner. Remove the sensor cover reconnect any loose connections on the wire harness on the temperature sensor for the drawer. Reconnect the wire harness if loose. Replace the wire harness if damaged. If the wire harness is okay, replace the temperature controlled drawer temperature sensor.
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Temperature controlled drawer temperature sensor, Wire harness
E15 Ambient temperature sensor is defective The ambient temperature sensor is an internal component of the display control module. Unplug the refrigerator for 3 minutes to reset the display control module. If the E15 code returns you restore power, replace the display control module.
Display control module
E10 Main control board module is defective Unplug the refrigerator for 3 minutes to reset the main control board module. If the E10 code returns after you restore electrical power, replace the main control board module.
Main control board module
E11 Display control module is defective Unplug the refrigerator for 3 minutes to reset the display control module. If the E11 code returns after you restore electrical power, replace the display control module.
Display control module
E20 Communication error between the main control board module and the display control module Unplug the refrigerator and reconnect any loose connections on the wire harness for the main control board module and the display control module. Replace the wire harness if damaged. Check the main control board module and display control module for burnt spots on the circuit boards or visible damage. Replace the main control board module or display control module if damaged.
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Main control board module, Display control module, Wire harness
E21 Communication error between display control module and the ice and water dispenser control module Unplug the refrigerator and reconnect any loose connections on the wire harness on the display control module and the ice and water dispenser control module. Replace the wire harness if damaged. Check the display control module and ice and water dispenser control module for burnt spots on the circuit boards or visible damage. Replace the display control module or ice and water dispenser control module if damaged.
See the repair guide to fix it yourself
Display control module, Ice and water dispenser control module, Wire harness