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Bosch Refrigerator Error Codes: E2, E3 Ice Maker and Sensor Guide

Quick Answer

Bosch refrigerators use fewer error codes than most brands because Bosch designs for simplicity. The main codes are E2 (ice maker temperature sensor fault) and E3 (freezer temperature sensor fault).

Bosch refrigerators use fewer error codes than most brands because Bosch designs for simplicity. The main codes are E2 (ice maker temperature sensor fault) and E3 (freezer temperature sensor fault). Bosch 800 Series and Benchmark models may also display temperature-related warnings without specific codes. Bosch does not have a user-accessible diagnostic mode on most refrigerator models - professional diagnostic tools connect via a service port on the main board. For most home troubleshooting: E2 means defrost the ice maker area first, E3 means check the freezer sensor. Bosch NTC sensors are different from LG and Samsung - always verify the resistance specification for your model.

BoschRefrigerator

About These Bosch Refrigerator Error Codes

Bosch fridge codes: E2 = ice maker sensor, E3 = freezer sensor. No user diagnostic mode on most models. NTC sensors - verify spec before ordering.

Most Common Error Codes

Ice maker sensor fault (E2) - frost buildup most common45%
Freezer temperature sensor fault (E3)30%
Power surge corrupting control board15%
Sensor connector corroded from moisture10%

Symptoms You May Notice

  • Error code on display
  • Ice maker not working
  • Freezer temp unstable
  • Compressor running constantly

Tools Required for Diagnosis

MultimeterFlashlightScrewdriver set

How to Identify Your Error Code

1

Identify the specific code

Identify the specific code: E2 = ice maker, E3 = freezer. Each has different sensor location and repair.

2

For E2

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name
Bosch Ice Maker SensorModel-specific · $20–$40
Bosch Freezer SensorModel-specific · $20–$40

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs
Labor Approach
Our Verdict
REPAIR
Estimated Cost: $30 (Parts) vs $4000 (New Machine)

Frequently Asked Questions

Does Bosch have a diagnostic mode for refrigerators?
Most Bosch consumer refrigerators do not have a user-accessible diagnostic mode. Professional technicians connect via a service port on the main board using Bosch-specific diagnostic tools.
Are Bosch fridge error codes the same as Bosch dishwasher codes?
No. Bosch dishwashers use E-codes with different meanings than Bosch refrigerators. E2 on a dishwasher is completely different from E2 on a refrigerator.
Bosch fridge parts - where to buy?
BSH Home Appliances (boschparts.com), authorized Bosch dealers, and major parts retailers. Always use your full model number for exact part matching.

Related Bosch Refrigerator Error Codes

Code: E2Bosch E2: Ice Maker SensorCode: E3Bosch E3: Freezer Sensor

Same Fix Works on These Brands

Bosch shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

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Models Known to Experience HUB Errors

This repair applies to most Bosch refrigerators with this error code. Common model numbers include:

B36CL80SNS, B36CT80SNS, B36CD50SNS, B26FT50SNS

Last verified for technical accuracy on March 15, 2026