GE Cooktop Error Code 1X3

The GE cooktop error code 1X3 indicates an open circuit condition in the RTD (Resistance Temperature Detector) temperature sensor associated with a specific surface element. The "X" in the code is a variable digit that identifies which sensor or surface element is affected, so a code of 113 points to sensor 1, 123 to sensor 2, and so on. An RTD sensor works by changing its electrical resistance in a predictable way as temperature changes. When the control board reads an open circuit instead of a valid resistance value, it interprets this as a failed or disconnected sensor and triggers the 1X3 fault.

The most likely causes of this fault fall into two categories: connection failures and physical component damage. Loose or corroded connectors in the wire harness between the RTD sensor and the control board are a frequent culprit, especially after repeated heating and cooling cycles that can cause connector terminals to loosen over time. The heater ribbon, which is a flat resistive heating element used in induction and radiant cooktop designs, should also be inspected for visible cracks, burns, or breaks, as damage to it can disrupt the sensor circuit.

Diagnosis should begin by powering down the unit and inspecting all heater, sensor, and wire harness connectors for the affected element. Confirm each connector is fully seated and free of corrosion or heat damage. If connections are secure and undamaged, the RTD sensor itself may have failed and will need to be tested for continuity. A completely open reading with no continuity confirms sensor failure and requires replacement of the sensor or associated harness assembly.