Whirlpool Cooktop Error Code F-12

F-12 indicates a coil under-current fault on a single burner circuit. The power control board detected that one burner coil is drawing less current than expected during operation. The cooktop disables that burner and displays F-12 to alert you to the problem. The failure originates at the power control board and affects only one burner.

The cooktop disables the affected burner when F-12 is active, so the faulted burner will not operate. While other burners may still function, using any appliance in a fault state is not recommended without diagnosing the root cause first. Have the unit inspected before returning it to regular use.

Repair costs depend on the root cause. If only a wiring connection needs to be reseated, the cost may be limited to a service call fee, typically in the range of $75 to $150. A replacement burner coil assembly generally runs $50 to $150 for the part, while a new power control board can cost $150 to $400 or more depending on the model. Labor charges will add to these figures if a technician performs the repair.

The first diagnostic step is something many handy homeowners can handle: disconnect power to the cooktop and check that the wiring harness connectors at T2A/T2B or T3A/T3B on the power control board are fully seated and undamaged. If a loose connection is the cause, reseating the connector may resolve the fault. If the burner coil or the power control board itself has failed, those repairs involve higher-voltage components and are best handled by a qualified technician.

Disconnecting power briefly may temporarily clear the error display, but the code will return if the underlying cause has not been corrected. A loose connection that is reseated properly can result in a permanent fix, but a failed coil or damaged board will cause F-12 to reappear as soon as that burner is activated again.