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Error code reference

Jenn-Air Oven Error Code FC

Second oven error sensed (double oven only).

Jenn-Air codesJenn-Air oven codes

Second oven error sensed (double oven only).

First step from the service manual

Check sensor and harness. Replace second oven board.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What FC means on a Jenn-Air oven

The FC error code on a Jenn-Air oven indicates a communication failure between the oven's internal control boards. Specifically, the main control board has lost reliable communication with the power relay board (PRB), which is responsible for switching the electrical loads that power the heating elements. The fault is typically traced first to the J2 wiring harness, the connector and wire bundle that carries signals between these two boards. If the harness checks out, the PRB itself is the likely failed component.

For homeowners, think of the two boards as the brain and the muscle of your oven. The main control board sends instructions, and the power relay board carries them out by switching power to the bake and broil elements. When these two boards cannot communicate, the oven shuts down and displays FC to prevent unsafe or unpredictable operation. The problem is usually either a loose or damaged connector on the J2 harness or a failed power relay board.

This error will prevent normal oven operation until the communication path is restored. The repair requires inspecting internal wiring connections and potentially replacing the PRB, so comfort working inside appliance control panels is needed.

Source: manufacturer service documentation.

Common causes of FC

  1. 01

    Loose or damaged J2 wiring harness connector

    Wiring / connection

    The J2 harness connects the main control board to the power relay board. A loose, corroded, or broken connector on this harness interrupts the communication signal and triggers the FC code.

  2. 02

    Damaged or shorted J2 harness wiring

    Part replacement

    Individual wires within the J2 harness can fray, burn, or short against the oven chassis, breaking the communication circuit even if the connectors appear seated correctly.

  3. 03

    Failed power relay board (PRB)

    Part replacement

    If the J2 harness and its connectors test good, the power relay board itself has likely failed internally and can no longer receive or respond to signals from the main control board.

  4. 04

    Failed main control board

    Part replacement

    In less common cases, the main control board loses the ability to send communication signals through the J2 harness. This is typically diagnosed only after confirming the harness and PRB are both functional.

See the test procedure for each cause

Frequently asked questions about FC

What does the FC error code mean on a Jenn-Air oven?
FC on a Jenn-Air oven means the main control board and the power relay board (PRB) have lost communication with each other. The signal path between these two boards, carried through the J2 wiring harness, has been interrupted. The oven cannot operate safely without this communication link, so it shuts down and displays the code.
How do I fix the FC error code on a Jenn-Air oven?
Start by disconnecting power to the oven for at least 60 seconds and restoring it to see if the fault clears. If FC returns, you need to access the control area and inspect the J2 wiring harness, checking that all connectors are fully seated, free of corrosion, and that no wires are visibly damaged. If the harness checks out, the next step is replacing the power relay board (PRB). If replacing the PRB does not resolve it, the main control board may also need replacement.
Is it safe to use my Jenn-Air oven while the FC code is displayed?
No. The FC code means the power relay board cannot receive commands from the main control board, which means the oven cannot control its heating elements reliably. Using the oven in this state risks uncontrolled heating behavior. Keep the oven off until the fault is diagnosed and repaired.
How much does it cost to repair the FC error on a Jenn-Air oven?
If only the J2 harness connection is loose, the repair costs nothing beyond your time. A replacement J2 wiring harness, if the wiring is damaged, typically runs $20 to $60. A replacement power relay board (PRB) for Jenn-Air ovens generally costs $80 to $200 depending on the model. If a service technician is needed for diagnosis and installation, expect $100 to $200 in labor on top of parts. Homeowners comfortable with appliance disassembly can handle the harness inspection and PRB swap themselves.
Can resetting my Jenn-Air oven clear the FC code?
A reset, done by cutting power at the breaker or unplugging the oven for 60 seconds, will sometimes clear the FC code temporarily if the fault was caused by a one-time electrical glitch. However, if FC returns after the reset and a normal cook cycle, the underlying problem with the J2 harness or the power relay board is still present and needs physical inspection and repair.

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