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Error code reference

Bosch Refrigerator Error Code F2

Compartment sensor in the refrigerator compartment is short-circuited.

Bosch codesBosch refrigerator codes

Compartment sensor in the refrigerator compartment is short-circuited.

First step from the service manual

Check the sensor and the supply cable to the electronics module.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What F2 means on a Bosch refrigerator

The F2 error code on a Bosch refrigerator indicates a short circuit condition in the compartment temperature sensor located in the refrigerator section. This sensor is a negative temperature coefficient (NTC) thermistor that continuously monitors the internal cabinet temperature and sends resistance-based signals to the electronics control module. When a short circuit occurs, the sensor's resistance drops to near zero ohms rather than the expected range corresponding to normal operating temperatures, causing the electronics module to detect an invalid reading and trigger the fault code.

A short circuit in this circuit can occur at the sensor itself, at the connector terminals, or anywhere along the supply cable that runs from the sensor to the electronics module. Damaged wire insulation, pinched cables, moisture intrusion into connectors, or a failed sensor element can all create a low-resistance path that the module interprets as a short. The sensor and wiring should be inspected along their full length, paying particular attention to areas where the cable may be routed near sharp edges or moving components.

Because the refrigerator compartment sensor is critical for maintaining proper cooling cycles, an F2 fault will typically prevent the control system from accurately regulating the compressor and evaporator fan, which can result in temperature instability or continuous running. Resolving the fault requires confirming whether the short is in the sensor itself or in the cable and connector assembly before replacing any components.

Source: manufacturer service documentation.

Common causes of F2

  1. 01

    Failed NTC thermistor sensor

    Part replacement

    The temperature sensor element itself has internally short-circuited, dropping its resistance to near zero. This can be confirmed by disconnecting the sensor and measuring its resistance with a multimeter to check for a shorted reading.

  2. 02

    Damaged supply cable insulation

    Part replacement

    The wiring harness running from the sensor to the electronics module may have pinched, cut, or worn insulation that allows two conductors to contact each other and create a short. Visually inspect the full cable run for any damage or chafing points.

  3. 03

    Corroded or shorted connector terminals

    Wiring / connection

    Moisture or frost buildup inside the connector housing can bridge the terminal contacts and simulate a short circuit. Disconnect the connector and inspect for moisture, corrosion, or ice, then dry and clean the contacts before retesting.

  4. 04

    Pinched wiring from ice buildup

    Wiring / connection

    Excessive frost accumulation in the compartment can encase and compress wiring against cabinet walls or shelving hardware, causing an intermittent or permanent short. Defrosting the compartment fully may reveal or resolve cable damage.

  5. 05

    Faulty electronics control module

    Part replacement

    In rare cases, an internal fault in the electronics module itself can incorrectly report a short on the sensor input circuit even when the sensor and cable are intact. This should only be considered after the sensor and wiring have been confirmed good.

See the test procedure for each cause

Frequently asked questions about F2

What does F2 mean on a Bosch refrigerator?
F2 on a Bosch refrigerator means the compartment temperature sensor in the refrigerator section has a short circuit condition. The sensor, which is a thermistor that measures cabinet temperature, is sending a signal the electronics module recognizes as an electrical short rather than a valid temperature reading. The fault can be located in the sensor itself, the wiring, or the connector between the sensor and the control board.
Can I fix the F2 error code on my Bosch refrigerator myself?
A knowledgeable DIYer can start by inspecting the sensor cable and connector for visible damage, corrosion, or moisture, and cleaning or reseating the connector to see if the fault clears. If the wiring appears intact, the next step is testing the sensor resistance with a multimeter to confirm it is shorted. Replacing the compartment sensor is a relatively straightforward repair, but accessing the electronics module for further diagnosis may require more technical experience.
Is it safe to keep using my Bosch refrigerator when F2 is displayed?
It is not advisable to rely on the refrigerator for food storage while the F2 fault is active. Because the temperature sensor is shorted, the control system cannot accurately read the compartment temperature, which means cooling may be inconsistent or unreliable. Food safety could be compromised if the refrigerator is not maintaining proper temperatures.
How much does it cost to repair a Bosch refrigerator F2 error?
If the fault is simply a corroded connector that can be cleaned, there may be little to no parts cost involved. Replacing the compartment temperature sensor typically costs between $20 and $80 for the part, depending on the model. If a service technician is required for diagnosis and repair, labor charges will add to the total, generally bringing the full repair cost into the $100 to $250 range.
Will resetting my Bosch refrigerator clear the F2 error code?
A power reset, such as unplugging the refrigerator for a few minutes and restoring power, may temporarily clear the displayed code, but the fault will return if the underlying short circuit in the sensor or wiring has not been corrected. The F2 code is triggered by an active electrical fault that the control module detects on startup and during operation, so a lasting fix requires repairing or replacing the faulty component.

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