Frigidaire Cooktop Error Code E65

The E65 error code on a Frigidaire cooktop indicates that the temperature sensor associated with the right front heating element has detected a temperature reading that exceeds the acceptable operating threshold. This is an overtemperature fault condition, meaning the control board has received a signal from the sensor suggesting the element or its surrounding area is running hotter than the design limits allow. The cooktop's control system monitors element temperatures continuously to prevent damage to internal components and to ensure safe operation.

The most immediate diagnostic focus should be on ventilation. If the airway beneath or around the cooktop is blocked, or if the cooling fan is not functioning correctly, heat can build up around the sensor and trigger a false overtemperature reading even when the element itself is operating normally. Restricted airflow is one of the most common root causes because it allows ambient heat to accumulate around the sensor housing rather than dissipating as intended.

Beyond ventilation issues, the temperature sensor itself can fail in a way that causes it to report inflated temperature values to the control board. A faulty sensor may have degraded internal resistance characteristics, causing inaccurate readings. In some cases, the control board that interprets those sensor signals can also be at fault if it is misreading correct sensor data. Wiring connections between the sensor and the board should also be inspected for heat damage, corrosion, or looseness, as a poor connection can produce erratic or elevated signal readings.