KitchenAid Oven Error Code F30

The F30 error code on a KitchenAid oven indicates a fault detected in the upper oven temperature sensor circuit. Specifically, the control has read the sensor as either open (no continuity, infinite resistance) or shorted (near-zero resistance), both of which fall outside the acceptable operating range. The temperature sensor is a negative temperature coefficient (NTC) resistor, and its baseline resistance should measure approximately 1075 ohms at 68°F (room temperature). Any significant deviation from this value signals a circuit problem that prevents the oven from accurately monitoring and regulating heat.

The circuit runs from the sensor itself through the wiring harness to the Appliance Manager board at connector pins P3-1 and P3-2. A fault can originate at any point along this path: the sensor element, the wire leads, the connector terminals, or the board input itself. Heat exposure over time can degrade sensor accuracy or cause the internal element to fail entirely. Physical damage to the wiring, such as chafing against oven cavity components or insulation breakdown from prolonged heat, can also introduce shorts or open conditions.

Diagnosis should begin with a resistance measurement at the sensor using a multimeter. Disconnect the sensor leads and measure across the sensor terminals. A reading far above or below 1075 ohms at room temperature confirms sensor failure. If the sensor reads correctly, inspect the wiring harness between the sensor and the Appliance Manager connector P3-1 to P3-2 for damaged insulation, broken conductors, or corroded terminals. If wiring is intact and sensor resistance is correct, the Appliance Manager board may be suspect.