Electrolux Refrigerator Error Code OP

OP stands for open circuit and indicates that the fresh food compartment temperature sensor is not sending a valid signal to the control board. The board detects infinite resistance from the thermistor circuit, which falls outside the expected NTC range. The freezer section continues to operate normally because it uses a separate thermistor on its own circuit. The fresh food section may not cool properly while this code is active.

A reset may temporarily clear the OP code from the display, but it will return immediately if the underlying open circuit condition still exists. The control board will detect the missing thermistor signal as soon as it resumes monitoring. A reset is only useful for confirming whether the fault is intermittent. A proper repair of the thermistor, wiring, or connector is required to permanently clear the code.

If only the thermistor needs replacement, parts typically range from around $15 to $50 depending on the specific model. If a technician is required for diagnosis and repair, total costs including labor can range from $100 to $250 or more. In cases where the control board is at fault, parts alone can range from $100 to $300. Confirming whether the issue is the sensor or wiring before ordering parts can help avoid unnecessary expenses.

Start by inspecting the fresh food thermistor connector for loose, corroded, or damaged terminals and reseat it firmly. Then use a multimeter to measure the thermistor resistance and compare the reading to the NTC chart at a known ambient temperature. If the resistance reads OL (open line) or is far outside the expected range, the thermistor needs to be replaced. If the thermistor tests correctly, check the wiring harness for continuity between the sensor and the control board.

The OP code does not represent an immediate safety hazard, but it does mean the control board cannot accurately regulate the fresh food compartment temperature. Food stored in the fresh food section may not be kept at a safe temperature, particularly if the cooling cycle is disrupted. It is advisable to address the fault promptly and monitor food temperatures until the repair is completed.