Electrolux Refrigerator Error Code 2nd LED blinking

The 2nd LED blinking at 0.5-second intervals on an Electrolux refrigerator indicates a fault in the defrost sensor circuit. The control board has detected that the defrost sensor is either disconnected or has a short circuit, producing a resistance reading outside the acceptable range. This code corresponds to the medium temperature indicator LED and points specifically to the defrost sensor and its wiring.

The refrigerator may continue cooling in the short term, but running it with a faulty defrost sensor means the automatic defrost cycle may not operate correctly. Over time, this can cause ice to build up on the evaporator coils, which will restrict airflow and reduce cooling efficiency. It is best to diagnose and repair the issue promptly to avoid secondary problems.

If the repair is limited to reseating a loose connector or cleaning corroded terminals, there may be little to no parts cost involved. Replacing a defrost sensor typically costs somewhere in the range of $20 to $60 for the part, with additional labor costs if a technician performs the work. If the control board is ultimately found to be faulty, repair costs will be significantly higher, generally ranging from $150 to $350 or more depending on the board.

Start by unplugging the refrigerator and locating the defrost sensor connector. Check for loose, corroded, or damaged connections and reseat the connector firmly. If the wiring looks intact, use a multimeter to measure the sensor's resistance and compare it to the temperature-to-resistance conversion table for your model. If the resistance reading is incorrect, the defrost sensor will need to be replaced.

A power reset may temporarily clear the code, but it will return if the underlying defrost sensor fault has not been resolved. The control board will re-detect the out-of-range or missing sensor signal and trigger the blinking LED again. Clearing the code permanently requires repairing or replacing the faulty sensor or wiring.