KitchenAid Cooktop Error Code F-12

F-12 indicates a coil under-current fault affecting one induction burner, with the failure originating at the power control board. The board detects that current through the burner coil is below the expected level for the selected power setting. This is classified as a Type 1 burner fault, meaning only one burner is affected. The cooktop will not allow normal operation of that burner until the fault is resolved.

The affected burner will not function correctly while the F-12 code is active, and continued attempts to use it could stress the power control board further. Other burners on the cooktop may continue to operate normally, but it is best to have the fault diagnosed promptly. Avoid using the faulting burner until the underlying cause has been identified and corrected.

Repair costs depend on the root cause. If the fix is simply reseating a loose terminal connection, costs are minimal and limited to any service call fee, typically in the range of $75 to $150. Replacing an induction coil or power control board will add parts costs, with total repairs commonly ranging from $200 to $500 or more depending on parts pricing and labor rates in your area.

The first diagnostic step, checking and reseating the terminal connections at T2A/T2B or T3A/T3B on the power control board, is something a confident DIYer can perform after disconnecting power completely. However, testing the induction coil and power control board for electrical faults requires familiarity with component-level diagnostics and safe handling of high-voltage components. If the connection check does not resolve the fault, a qualified appliance technician is recommended.

Disconnecting power briefly may temporarily clear the error display, but the F-12 code will return if the underlying cause, such as a loose terminal connection, a defective coil, or a failing control board, has not been addressed. A reset is useful for confirming whether the fault is intermittent, but it is not a repair. The root cause must be identified and corrected to permanently resolve the code.