JennAir oven displays F1-3, may occur intermittently during use

Safety: Shut off power at the breaker before accessing the oven interior or rear panel.

• Locate sensor: Inside the oven cavity, find the thin metal probe (temperature sensor) usually mounted on the back wall with two screws.
• Check connections: Remove the mounting screws and gently pull the sensor forward to access the connector. Ensure the plug is fully seated and not burnt.
• Test resistance: With the sensor unplugged and the oven cold, measure resistance across the sensor terminals using a multimeter. A typical JennAir sensor should read around 1050–1100 ohms at room temperature. An infinite or very high reading indicates an open sensor.
• Inspect harness: If the sensor tests good, check the wiring harness from the sensor connector back to the control board for breaks or burns (access from the rear or top of the oven).
• Replace faulty part: Replace the oven temperature sensor if open, or repair/replace the damaged harness. Clear the code by cycling power.