KitchenAid Range Error Code F3E6

The F3E6 error code on a KitchenAid range indicates that the warming drawer temperature sensor circuit is open. An open circuit means the control board is receiving no signal from the sensor, which typically occurs when the sensor itself has failed internally, or when the wiring between the sensor and the control board has lost continuity. The warming drawer uses a dedicated thermistor-style temperature sensor to monitor heat levels and regulate the drawer's heating element. Without a valid sensor reading, the control board disables the warming drawer function and triggers this fault code.

The most common root cause is a loose or disconnected wiring harness connector at the sensor itself. Vibration from normal range use can work connectors loose over time, and this is the first thing to rule out before replacing any components. Beyond a loose connection, the sensor element can fail in an open state, meaning its internal resistance has broken down completely and no longer completes the circuit. Less commonly, the wiring harness between the sensor and control board can develop a break due to physical damage, heat exposure, or a pinched wire.

Diagnosis begins with unplugging the range and accessing the back panels to visually inspect and reseat the warming drawer sensor connector. If the connection is secure, the next step is to test the sensor's resistance with a multimeter. A sensor reading an open circuit or far outside its expected resistance range at room temperature should be replaced. If the sensor tests within spec, the wiring harness and the control board itself become suspects.