Maytag Cooktop Error Code 12 LEDs flash

When all 12 LEDs flash on a Maytag cooktop, it indicates a communication failure between the control board and the power board. The control board has detected that it cannot communicate with the power board and responds by resetting the power board every 15 seconds. This error prevents normal cooktop operation until the underlying connection or component issue is resolved.

The cooktop is already attempting its own internal reset by cycling the power board every 15 seconds, but this does not resolve the root cause. Cycling the cooktop's power at the breaker may temporarily clear the display, but if the communication failure condition is still present, the error will return. A lasting fix requires addressing the wiring connection or replacing the faulty board.

If the issue is a loose wiring connection, there may be no parts cost, though a service call from a technician would typically run anywhere from $75 to $150 or more depending on your area. If the control board needs replacement, parts and labor combined can range from $200 to $400 or higher depending on the specific model and local labor rates. Getting a diagnostic quote before authorizing repairs is advisable.

The first step is to check that all wiring harness connections between the control board and the power board are firmly seated and free of corrosion or damage, which is something a knowledgeable DIYer can do with the cooktop powered off and unplugged. If the connections are secure and the error continues, the control board will likely need to be replaced, which requires working with high-voltage components and comfort with appliance disassembly. If you are not experienced with appliance repair, professional service is recommended.

The cooktop should not be used while this error is active. The 12 LEDs flash condition means the control board and power board cannot communicate properly, which means the cooktop cannot function as intended and heating element behavior may be unpredictable. Discontinue use until the fault is diagnosed and repaired.