Samsung Refrigerator Error Code Ice Maker (Fridge) Sensor Error

This error means the refrigerator's control board has detected a problem with the temperature sensor inside the fridge ice maker. The sensor is either disconnected, has a broken or shorted wire, or is reporting a temperature that falls outside the accepted range of -58°F (-50°C) to 149°F (+65°C). The control board monitors this sensor through Main PCB connector CN90 pins 3 and 9, and any signal outside the 4.5V to 1.0V window triggers the error.

A power reset may temporarily clear the error code from the display, but the code will return if the underlying fault is still present. Because this error is triggered by an electrical condition in the sensor circuit, the root cause must be corrected before the error will clear permanently. Resetting is useful for confirming whether a fault is intermittent, but it is not a repair.

If the repair only requires reseating a connector or repairing a wire, costs are minimal and may involve only a service call fee, typically in the range of $75 to $150 depending on your area. Replacing the ice maker temperature sensor itself is generally an inexpensive part, with the sensor component often ranging from $15 to $50, plus labor if a technician performs the work. If the Main PCB is found to be at fault, board replacement can range from $150 to $400 or more depending on the specific model.

A knowledgeable DIYer can handle some causes, particularly checking that the connector at CN90 is fully seated and inspecting the wire harness for visible damage. Voltage testing at the connector pins and resistance testing at the sensor require a multimeter and basic electrical knowledge. If the sensor thermistor itself has failed or the wire harness needs replacement, those repairs are straightforward for anyone comfortable working with appliance wiring.

The refrigerator's main cooling system will typically continue operating even with this error active, so food safety is generally not an immediate concern. However, the ice maker in the fridge section will likely be disabled or unreliable until the sensor issue is resolved. It is best to address the fault promptly to prevent ice maker damage from operating without proper temperature feedback.