Bosch Refrigerator Error Code F1

F1 on a Bosch refrigerator means the temperature sensor in the refrigerator compartment has an open circuit, meaning the signal path between the sensor and the electronics control module is broken. The sensor is responsible for reporting compartment temperature so the fridge can regulate its cooling cycles. This fault will typically cause incorrect or absent cooling in the refrigerator section. The sensor itself, the connecting wiring, or a loose connector are the most likely culprits.

Continued use with an active F1 error is not recommended for storing perishable food. Without a functioning compartment sensor, the refrigerator cannot accurately regulate temperature, meaning the compartment may run too warm or cycle improperly. Food safety is at risk if the internal temperature rises above safe levels. Address the fault as promptly as possible.

Repair costs depend on what component has failed. A replacement NTC thermistor sensor is generally an inexpensive part, typically ranging from around $15 to $50 depending on the specific model. If the electronics control module needs replacement, costs rise significantly, often falling in the $150 to $400 range for the part alone. Adding professional labor, total repair costs can range from roughly $100 to $500 or more depending on diagnosis and location.

Some causes of the F1 error, such as a loose or disconnected connector, can be addressed by a knowledgeable DIYer who is comfortable checking wiring connections inside the appliance. However, diagnosing a failed thermistor or damaged harness requires a multimeter and some familiarity with electrical testing. Replacing the sensor or control board is a moderate repair that many experienced DIYers can handle, though professional service is recommended if you are not comfortable working with appliance electronics.

A power reset may temporarily clear the displayed error code, but the F1 fault will return as soon as the control module checks the sensor circuit again and detects the open circuit condition. The underlying hardware issue, whether a failed sensor, broken wire, or bad connector, must be repaired before the error will stay cleared permanently.