JennAir microwave displays F16, often on models with turntable sensors, and the turntable may not rotate.

Safety First: Unplug the microwave before accessing the bottom or internal components.

• Check mechanical parts: Remove the glass tray and roller ring. Inspect the turntable coupler for cracks or wear. Replace if damaged.
• Test motor rotation: With the tray removed, start a short cook cycle (if safe to do so) and observe whether the coupler turns. If it does not, stop the cycle and disconnect power.
• Access motor: Remove the bottom panel (or outer cover, depending on model) to access the turntable motor.
• Test motor: Disconnect the motor wires and test for continuity with a multimeter. An open motor indicates failure.
• Inspect wiring: Check the wiring harness and any turntable sensor (if equipped) for loose connections or damage.
• Replace faulty parts: Install a new turntable motor and/or turntable coupler as needed. Reassemble and test.