Frigidaire Cooktop Error Code E52

The E52 error code on a Frigidaire cooktop indicates a break or open circuit condition in the temperature sensor associated with the left rear heating element. This sensor is a thermistor or thermocouple-type device that continuously monitors the surface or element temperature and feeds that data back to the generator circuit board. When the board detects that the sensor signal is absent or falls outside the expected resistance range, it interprets this as a sensor break and triggers the E52 fault to prevent uncontrolled or unmonitored heating.

The generator circuit board is the central control component that manages power delivery to the induction or radiant element and relies on accurate temperature feedback to regulate cooking performance and enforce safety limits. A break in the sensor circuit can occur at several points: the sensor itself may have failed internally, the wiring harness connecting the sensor to the board may be damaged or disconnected, or the connector at the board may be loose or corroded. Because the board cannot confirm safe operating temperatures without this input, it disables the affected element and displays E52.

The first diagnostic step is to inspect the physical connection between the left rear element temperature sensor and the generator circuit board. A loose connector is a common and easily corrected cause of this fault. If the connection is secure and the fault persists, the sensor itself or the wiring harness between the sensor and board should be tested for continuity to confirm where the open circuit exists.