Jenn-Air Range Error Code 1c4c

The 1c4c code indicates a board-to-board communication failure between the display board and the relay board inside the range. These two boards must exchange data continuously for the oven to function, and when that link is broken, the range displays this fault and stops operating normally. The cause can be a faulty wiring harness, damaged connector, or a failed board on either end of the communication circuit.

It is not recommended to operate the range while this code is present. The communication failure between the display and relay boards means the control system cannot reliably manage heating elements, which creates an unpredictable and potentially unsafe operating condition. The range should remain off until the fault is diagnosed and repaired.

Repair costs vary depending on whether the fix requires only a connector or harness repair versus full board replacement. A relay board or display board replacement, including parts and labor, typically falls in the range of $200 to $600 or more depending on the specific model and local labor rates. Getting a diagnostic visit from a certified technician first will help identify whether one or both boards need to be replaced before committing to parts costs.

A homeowner with basic electrical knowledge can check for obviously loose connectors inside the range after disconnecting power, but diagnosing which board has failed typically requires test equipment and experience with appliance electronics. If the connectors look secure and undamaged, replacing the relay board or display board is best left to a qualified technician. Incorrect board handling can cause additional damage.

Resetting the range by cutting power at the breaker may temporarily clear the code, but it is very likely to return quickly because the underlying hardware problem remains. A reset does not repair a damaged connector, a broken wiring harness, or a failed board. Persistent return of the code after a reset confirms a physical fault that requires hands-on diagnosis.