Electrolux Range Error Code F031

The F031 error code on an Electrolux range indicates that the oven temperature probe, also called an RTD (Resistance Temperature Detector), has been detected in a shorted condition. The oven relay board continuously monitors the resistance signal coming from the RTD probe at pins 3 and 4 of connector J6. Under normal operating conditions, the RTD probe changes resistance predictably as oven temperature rises and falls. When the board reads an abnormally low resistance value, consistent with a short circuit, it triggers the F031 fault to prevent the oven from operating incorrectly or unsafely.

The RTD probe is a two-wire sensor typically mounted inside the oven cavity, with its connector routed to the relay board. A short can occur within the probe element itself, along the wire harness between the probe and the board, or at the connector. Physically damaged insulation from high heat exposure, pinched wiring, or a probe that has failed internally are the most frequent causes. Because the relay board uses this resistance signal to regulate heating element operation, a shorted probe can cause the board to misread oven temperature, potentially leading to runaway heating or complete oven shutdown.

Diagnosis begins with the range unplugged and the RTD connector disconnected at J6 pins 3 and 4. Checking resistance between each wire and chassis ground will reveal whether the short exists in the wiring harness or is isolated to the probe itself. A properly functioning probe will show no continuity to ground. If a short to ground is present in either wire, the harness must be inspected along its full length before replacing the probe.