mypros+
Error code reference

Bosch Refrigerator Error Code F14

Evaporator sensor in the freezer compartment is short-circuited.

Bosch codesBosch refrigerator codes

Evaporator sensor in the freezer 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.

MyPros+ Max

Get the full diagnostic procedure for F14.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What F14 means on a Bosch refrigerator

The F14 error code on a Bosch refrigerator indicates a short circuit condition in the evaporator sensor located in the freezer compartment. This sensor is a negative temperature coefficient (NTC) thermistor responsible for monitoring the temperature at the evaporator coil. When the sensor or its wiring develops a short circuit, resistance drops abnormally low, causing the electronics module to detect a value outside the acceptable operating range and trigger the fault code.

A short circuit in this context means the sensor circuit is reading near-zero resistance, which the control board interprets as an impossibly low temperature. This prevents the refrigerator from accurately regulating the freezer cooling cycle. Left unaddressed, the appliance may run the compressor continuously or shut down cooling entirely as a protective measure, potentially causing food spoilage or component damage.

The primary diagnostic approach is to inspect the evaporator sensor itself and trace the supply cable running from the sensor back to the electronics module. Damage can occur at the sensor body, along the wiring harness, or at the connector points where moisture or frost accumulation is common in the freezer environment. Pinched wires, corroded connectors, or a failed sensor element are the most frequent sources of this fault.

Source: manufacturer service documentation.

Common causes of F14

  1. 01

    Failed evaporator sensor (shorted thermistor)

    Part replacement

    The NTC thermistor element inside the sensor can fail internally, causing its resistance to drop to near zero and triggering the short circuit fault. This is the most common cause and requires replacing the sensor.

  2. 02

    Damaged wiring harness

    Part replacement

    The cable running from the evaporator sensor to the electronics module can become pinched, chafed, or cracked, causing two conductors to contact each other and create a short. Inspect the full length of the harness for visible damage or wear points.

  3. 03

    Corroded or shorted connector

    Wiring / connection

    The connector joining the sensor cable to the electronics module can accumulate moisture or frost residue over time, leading to corrosion or electrical bridging between pins. Clean and inspect the connector for discoloration or buildup.

  4. 04

    Moisture intrusion at the sensor body

    Part replacement

    Frost or condensation can infiltrate the sensor housing, especially if the door seals are compromised, causing an internal short within the sensor assembly itself. Check the sensor housing for signs of ice accumulation or water entry.

  5. 05

    Faulty electronics module

    Part replacement

    In rare cases, the electronics module itself may have a fault causing it to misread the sensor circuit as a short even when the sensor and wiring are intact. This should be considered only after the sensor and harness have been confirmed good.

See the test procedure for each cause

Frequently asked questions about F14

What does F14 mean on a Bosch refrigerator?
F14 on a Bosch refrigerator indicates that the evaporator sensor in the freezer compartment has a short circuit. This sensor monitors the temperature at the evaporator coil and sends that data to the electronics module. A short circuit causes the sensor resistance to drop abnormally, preventing accurate temperature control. The refrigerator triggers F14 to alert you that this sensor circuit needs inspection and likely repair.
How do I fix the F14 error on my Bosch refrigerator?
Start by checking the evaporator sensor and the supply cable running to the electronics module, as these are the components identified in the fault. Inspect the wiring harness for pinching or damage, check the connector for corrosion, and test the sensor itself for a short circuit condition. If the sensor or wiring is faulty, replacing the affected component should clear the error. If the wiring and sensor test normal, the electronics module may need further evaluation.
Is it safe to use my Bosch refrigerator while F14 is displayed?
Continuing to use the refrigerator with an active F14 fault is not recommended for extended periods. The faulty sensor means the freezer temperature is not being accurately monitored, which can result in inadequate cooling or continuous compressor operation. Food safety may be compromised if the freezer is not maintaining proper temperatures. Address the fault as soon as possible to avoid food spoilage or potential component damage.
Will resetting my Bosch refrigerator clear the F14 error?
A reset may temporarily clear the F14 display, but the code will return if the underlying short circuit in the evaporator sensor or its wiring has not been repaired. Resetting the unit without fixing the root cause does not resolve the fault and may delay necessary repairs. The error should be diagnosed and corrected at the component level for a lasting fix.
How much does it cost to repair a Bosch refrigerator F14 error?
Repair costs vary depending on whether the issue is the sensor itself, the wiring harness, or a connector. A replacement evaporator sensor typically falls in the range of $20 to $60 for the part alone. If professional labor is needed, total repair costs including parts and service can range from $100 to $250 or more depending on your location and the technician's rates. Diagnosing and repairing a damaged harness or connector may cost less if no parts need to be ordered.

Related Bosch refrigerator codes

All Bosch refrigerator codes
View all 209 Bosch refrigerator codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass