What are the symptoms of error code E2?

Freezer displays E2 on the control panel, Freezer temperature fluctuates or is inaccurate, Compressor runs continuously or not at all, Freezer fails to reach set temperature, Frost buildup due to improper cooling cycles

What causes error code E2?

Faulty freezer temperature sensor (NTC), Loose or damaged wiring harness, Corroded sensor connector, Control board misreading sensor values, Sudden power interruption causing sensor fault

How do I fix error code E2?

Power cycle the freezer to clear temporary sensor faults., Ensure the freezer is not overloaded and air channels are clear., Inspect wiring and connectors for damage or corrosion., If the error persists, the temperature sensor may require replacement.

Bosch Freezer - E2 Error Code

Freezer temperature sensor malfunction.

Meaning

Freezer temperature sensor malfunction.

The E2 error indicates that the freezer's temperature sensor (NTC) is sending invalid, out-of-range, or no readings to the control board. Bosch explains that this code appears when the sensor is damaged, wiring is loose, or the sensor is detecting temperatures that fall outside expected parameters. The freezer may stop cooling or run continuously to prevent food spoilage or compressor strain.

Symptoms

Freezer displays E2 on the control panel
Freezer temperature fluctuates or is inaccurate
Compressor runs continuously or not at all
Freezer fails to reach set temperature
Frost buildup due to improper cooling cycles

Causes

Faulty freezer temperature sensor (NTC)
Loose or damaged wiring harness
Corroded sensor connector
Control board misreading sensor values
Sudden power interruption causing sensor fault

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Step-by-Step Fixes

Power cycle the freezer to clear temporary sensor faults.
Ensure the freezer is not overloaded and air channels are clear.
Inspect wiring and connectors for damage or corrosion.
If the error persists, the temperature sensor may require replacement.

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Safety Notes

Unplug the freezer before inspecting internal components.
Avoid using sharp tools near wiring or insulation.
Do not operate the freezer if temperatures are unstable.

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Applicable Models

Show Models

Upright Freezers: GSN29VW30, GSN29VW31, GSN29VW32, GSN29VW33, GSN29VW36, GSN29VW40, GSN29VW45
Serie 4 Freezers: GSN33VW30G, GSN33VW31G, GSN33VW32G, GSN33VW36G, GSN33VW40G
Serie 6 Freezers: GSN36VW30G, GSN36VW31G, GSN36VW32G, GSN36VW36G, GSN36VW40G, GSN36AI31, GSN36BI30
Serie 8 Freezers: GSN58AW30, GSN58AW31, GSN58AW40, GSN58AW45
Bottom‑Freezer Refrigerators (Freezer Section Affected): KGN36HI32, KGN36XI42, KGN39AI45, KGN39VI45, KGN39VW35, KGN49AI30, KGN49XI40
Built‑In Freezers: GIN31AE30G, GIN31AE40G, GIN41AC30G, GIN41AC40G
Older Legacy Models: GSD29VW20, GSD29VW21, GSD36VW20, GSD36VW21

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Other Bosch Freezer Error Codes

Show All Error Codes

Model-Specific Notes

Many Bosch GSN and GIN series freezers enter a protective cooling mode when E2 is detected, running the compressor at a fixed duty cycle until the sensor fault is resolved.

Disclaimer

The information provided on this page is for educational and informational purposes only. Repairs involve electrical, mechanical, and water-related risks. Always follow manufacturer instructions and consider contacting a qualified technician for diagnosis or repair.