Samsung Refrigerator Error Code F5

F5 on a Samsung refrigerator indicates a freezer compartment sensor error. The control board has detected a problem with the thermistor circuit due to a wire cut, short circuit, contact failure, or missing sensor. The code also triggers when the sensor reports a temperature above 150°F or below -58°F, which points to a sensor that has drifted out of its valid operating range. The freezer may not maintain correct temperatures until the fault is corrected.

The refrigerator may continue to run with an F5 code, but without reliable sensor feedback the control board cannot accurately regulate freezer temperature. Food safety is at risk if the freezer is not maintaining proper temperatures. Check the actual freezer temperature with a separate thermometer and avoid storing perishables until the sensor fault is resolved.

Repair costs depend on the specific cause. A replacement freezer thermistor typically costs between $15 and $50 for the part alone. If professional labor is needed, a service call plus repair time can bring the total to a range of $100 to $250 or more depending on your location and the technician's rates. Wiring harness repairs or control board replacement will fall toward the higher end of that range.

Some causes of the F5 code are DIY-friendly. You can inspect and reseat wiring connectors at the freezer thermistor and control board without special tools. If the wiring and connectors check out, testing the thermistor resistance with a multimeter is the next step. Replacing the thermistor is a moderate repair that many technicians and experienced DIYers can complete, but if the fault is in the main control board or involves complex wiring repair, a qualified technician is recommended.

A power reset by unplugging the unit for a few minutes may temporarily clear the F5 code, but the error will return if the underlying wiring or sensor fault is still present. A reset should be treated as a diagnostic step to confirm whether the fault is intermittent, not as a permanent fix. The sensor circuit must be inspected and the root cause corrected to eliminate the code.