Bosch Refrigerator Error Code F31

F31 on a Bosch refrigerator means the ice rod sensor circuit is interrupted, specifically an open circuit condition. The electronics module is not receiving any signal from the ice rod sensor, which monitors the ice-making system. This could be caused by a broken wire, a disconnected connector, or a failed sensor element.

The refrigerator itself will typically continue cooling food with an F31 error, but the ice maker may be disabled or operating incorrectly. There is no immediate safety risk to food or household safety in most cases. However, leaving the fault unresolved may prevent ice production entirely, and underlying wiring issues should be addressed promptly to avoid further damage.

Repair costs vary depending on the cause. If the issue is simply a disconnected connector, there may be no parts cost at all, though a service call will typically run between $75 and $150. Replacing the ice rod sensor or wiring harness adds parts costs that generally range from $20 to $80 depending on the specific model. If the electronics module itself needs replacement, total costs including labor could range from $200 to $450 or more.

Some causes of F31 are DIY-accessible, such as reconnecting a loose plug or clearing frost buildup from the ice maker area. However, testing sensor resistance with a multimeter and replacing the ice rod sensor or wiring harness requires basic electrical knowledge and comfort working inside the appliance. If you are not confident working around appliance wiring, a qualified technician is the safer option.

A reset may temporarily clear the F31 code from the display, but the error will return if the underlying fault has not been corrected. The electronics module will re-detect the open circuit in the ice rod sensor on its next diagnostic cycle. A permanent fix requires identifying and repairing the broken wiring, connector, or failed sensor.