GE Refrigerator Error Code F81

F81 on a GE refrigerator means the door board is detecting an invalid temperature reading from the icemaker mold thermistor. The control system expects a sensor signal within a specific resistance range, and anything outside that range triggers this fault. As a result, the icemaker will typically stop producing ice until the issue is resolved. The fault usually points to a bad thermistor, damaged wiring, or a faulty door board.

A power reset may temporarily clear the F81 code, but if the underlying fault still exists the code will return once the refrigerator restarts and re-evaluates the thermistor signal. Resetting is useful for confirming whether the fault is intermittent, but it is not a fix for a failed sensor, broken wire, or bad door board.

Repair costs vary depending on which component has failed. A replacement thermistor is generally an inexpensive part, often in the range of $10 to $40, while a door board replacement can cost between $80 and $200 or more for the part alone. Adding labor, a professional repair for this fault typically falls in the range of $150 to $350 depending on the technician and region.

Some steps are DIY-friendly, such as inspecting the door wiring harness for visible damage and reseating any loose connectors. Testing the ice mold thermistor with a multimeter is also within reach for someone comfortable with basic electrical diagnostics. However, if the door board itself needs replacement, the repair becomes more involved and may be better suited for a qualified technician.

The F81 fault specifically affects the icemaker circuit, so the refrigerator and freezer compartments should continue cooling normally. The main safety concern is that ice production will be halted, and any existing ice in the bin may not be replenished. You can continue using the refrigerator for food storage while arranging a repair.