Jenn-Air Oven Error Code 1c4c

Error code 1c4c indicates a micro communication failure where the checksum on the serial communications between two internal control boards is invalid. This means the data being transmitted between the boards is corrupted or unreadable. The oven's control system takes no automatic corrective action, so the oven may stop functioning normally until the fault is resolved.

It is not recommended to continue using the oven while this fault is active. Because the control boards are not communicating reliably, the oven may not respond correctly to commands, including temperature regulation and shutoff functions. Discontinue use until the communication fault is diagnosed and repaired.

Repair costs depend on which component is at fault. If only wiring or a connector needs attention, costs may be limited to a service call fee, typically in the range of $75 to $150. If a control board requires replacement, parts alone can range from $150 to $400 or more depending on the board, with additional labor costs on top. Getting a diagnostic estimate from a technician before authorizing repairs is advisable.

A power reset by turning off the circuit breaker for 1 to 5 minutes may temporarily clear the 1c4c code if it was caused by a momentary electrical glitch. However, if the underlying cause is a wiring fault or a failing control board, the error will return. A reset should be considered a first step in diagnosis, not a fix.

Start by inspecting the wiring harness that connects the control boards, checking for loose connectors, corrosion, or physical damage. If the wiring is intact, the next step is evaluating the main control board and secondary board for failure. In many cases, replacing one or both boards resolves the fault. Because this repair involves internal electronics, a qualified appliance technician is recommended if you are not comfortable working inside the oven.