GE Cooktop Error Code FA9

FA9 indicates that the control board on your GE induction cooktop has received a bad reading from the coil thermistor, the temperature sensor built into the induction coil assembly. The board cannot verify the thermal state of the coil, so it shuts down the affected burner zone as a safety measure. The fault points to the thermistor, the induction tray, or the coil assembly itself.

A power reset by disconnecting the cooktop for a few minutes may temporarily clear the FA9 code, but if the underlying thermistor or coil issue has not been resolved, the fault will return as soon as the cooktop attempts to use the affected zone. A reset is useful for confirming whether the fault is intermittent, but it is not a repair.

Repair costs vary depending on whether the fix is a wiring correction or a full coil assembly replacement. A coil assembly replacement, including parts and labor, typically falls in the range of $150 to $400 depending on the specific model and local labor rates. Getting a diagnostic inspection first will confirm which components need to be replaced before committing to a repair.

A knowledgeable DIYer can start by inspecting the induction tray and thermistor wiring connections for obvious damage or loose connectors, which requires no parts. However, if the thermistor or coil assembly needs replacement, the repair involves disassembling the cooktop and working near high-voltage induction components, which is best handled by a qualified technician. Always disconnect power before inspecting any internal components.

The cooktop disables the affected burner zone when FA9 is active, which is a built-in protection against unmonitored overheating. You should not attempt to bypass this fault or continue using that zone until the thermistor issue is repaired. Other zones may remain operational, but the cooktop should be serviced promptly.