Jenn-Air Oven Error Code F5

F5 means the control board detected that the power element relays were disabled during a cook cycle. The relays, controlled through the power relay board (PRB), are supposed to stay closed while the oven is heating. When the control sees them drop out unexpectedly, it stops the cook cycle and displays F5. The root cause is often an intermittent wire connection or a failing PRB rather than a burned-out element.

The oven will not complete a cook cycle while F5 is active because the control has intentionally disabled power to the heating elements. Attempting repeated resets to get through a cook cycle is not recommended since the underlying relay or connection fault could worsen. Until the cause is diagnosed and corrected, the oven should be considered out of service for normal cooking.

Reseating wire harness connections and replacing the temperature sensor are tasks most mechanically comfortable homeowners can handle with basic tools and the oven unplugged from power. Replacing the PRB is also a moderate DIY repair if you are comfortable identifying components on a circuit board assembly and working inside the control cavity. If the fault traces back to the main control board, professional diagnosis is advisable to confirm before spending money on that part, since control boards are expensive and non-returnable once installed.

Start by unplugging the oven and inspecting the wire harness connections at the PRB and the oven temperature sensor. Reseat every connector firmly and look for corrosion, melted insulation, or bent terminals. Reconnect power and run a cook cycle to see if the code returns. If it does, the PRB is the next component to test or replace. Because the fault is intermittent, gently flexing the harness while the oven is running can help pinpoint a loose connection before ordering parts.

If the fix is simply reseating a loose wire harness connector, the cost is just your time. A replacement oven temperature sensor typically runs between $20 and $60 for the part. A power relay board (PRB) for Jenn-Air ranges usually costs between $80 and $200 depending on the model. If a technician is needed for diagnosis and repair, expect a service call fee of $80 to $150 plus parts and labor, making total repair costs anywhere from $150 to $400 in most cases.