KitchenAid Cooktop Error Code FOP

FOP indicates that communication between the right and left electronic control boards has been lost. These two boards must exchange signals to coordinate cooktop operation, and when that link is broken, the unit shuts down and displays the FOP code. The fault is typically found in the wiring connectors designated CNT7 and CNT6, or in the relay board connection.

Unplugging the cooktop or cutting power at the breaker and then restoring power may temporarily clear the FOP code if the communication failure was caused by a transient electrical glitch. However, if the underlying cause is a loose connector, damaged harness, or failed board, the error will return once the cooktop attempts to resume normal operation. A proper inspection of the board connections is necessary for a lasting fix.

Repair costs vary depending on the root cause. If only a connector needs reseating or cleaning, labor costs for a service call typically range from $75 to $150. If a wiring harness requires replacement, parts and labor combined may run $100 to $250. Replacing one or both electronic control boards is the most expensive scenario, with total costs potentially ranging from $200 to $500 or more depending on parts availability and labor rates in your area.

A homeowner comfortable working with appliances can start by disconnecting power and checking whether any internal board connectors are visibly loose. However, accessing the internal boards and connectors on a built-in cooktop typically requires removing the unit and working with low-voltage wiring. If connectors appear secure and the error persists, diagnosing a failed board or harness is best left to a qualified technician.

No, you should not attempt to use the cooktop while the FOP error is active. The fault indicates that the control boards cannot communicate, which means the cooktop cannot properly regulate cooking zones or respond to user input. Disconnect power and leave the unit off until the fault has been diagnosed and repaired.