Electrolux Refrigerator OP Code: Causes & Fix

What is the Electrolux Refrigerator OP error?#

OP on an Electrolux refrigerator signals an open-circuit temperature sensor: the thermistor the control relies on reads infinite resistance, so the board loses its temperature reference and the compressor may not run at all. It matters because a fridge that will not cool spoils food, so the urgent first check is whether the sensor plug at the main board has simply worked loose before assuming the sensor element itself has died.

OP on a Electrolux Refrigerator: likely causes and repair cost#

On a Electrolux Refrigerator, the OP code signals: sensor open circuit.

Typical professional repair: $80–$200 · Difficulty: moderate · usually a technician job

Symptoms that often accompany OP: Compressor does not run at all; Temperature display shows dashes or goes blank; Unit powers up but never cools; Fresh food and freezer both drift warm; Error appears the moment the door is opened and the harness flexes

Technician diagnostic sequence for OP:

1. Check sensor connector at main board — reseat and test
2. Measure sensor resistance — open circuit (OL/infinite) confirms break
3. Trace sensor wire from board to evaporator for physical damage
4. On Frigidaire models, sensor clips fracture from ice expansion — inspect clip

Parts a technician may check or replace: — Thermistor sensor; — Sensor wire harness

Field note: OP (open) and SH (short) are the two complementary halves of the same thermistor fault: SH reads near zero ohms, OP reads infinite (OL). If the sensor measures OL on the multimeter the thermistor element itself has failed and a new connector alone will not fix it. On Frigidaire-built variants the sensor clip fractures from ice expansion and pulls a wire out of the terminal, which reads as OP even though the thermistor bead is fine — always inspect the clip and the crimp before ordering the sensor.

How to troubleshoot the OP error yourself#

This one is mostly a technician job, but there is a sensible sequence worth understanding before you call. OP is the "open" half of a thermistor fault — its mirror, SH, is a dead-short reading near zero ohms, while OP reads infinite. The most common trigger is not a failed sensor at all but a connector that has vibrated loose or a wire pulled out of its terminal, so the very first thing a tech does is find the sensor connector at the main board, reseat it, and re-test. If reseating restores cooling, the repair was essentially free. When it does not, the sensor is measured: an OL or infinite reading confirms a genuine break, and the wire is then traced from the board to the evaporator looking for physical damage. On Frigidaire-built variants the sensor clip fractures from ice expansion and yanks a lead out of the crimp, which reads as OP even though the thermistor bead is perfectly good. Because this means opening the cabinet and metering low-voltage circuits, stop at the reseat attempt and let a technician handle the diagnosis and any sensor replacement.

Is the Electrolux Refrigerator OP error worth fixing?#

OP is one of the cheapest refrigerator faults to put right, so repair is almost always the answer. The professional range is $80 to $200, and a thermistor plus the labor to trace and reseat its wiring sits at the low end — trivial next to a new refrigerator. Nothing about an open sensor implies a problem with the compressor, the sealed system, or the cabinet, so there is no mechanical reason to replace the appliance. Unless the fridge is already failing in other ways, fixing OP restores full cooling for a modest, well-bounded cost.

Electrolux Refrigerator OP: frequently asked questions#

What does OP mean on an Electrolux refrigerator?#

It is a sensor open-circuit fault: a temperature thermistor reads infinite resistance, so the control loses its reading. The compressor may stop and both compartments can drift warm.

Is it safe to keep using a refrigerator showing OP?#

Not for storing food — with the sensor open the unit often will not cool. There is no shock hazard, but move perishables elsewhere until the sensor circuit is restored.

Can I clear OP myself?#

You can reseat the sensor connector at the main board, which fixes it when the plug has simply worked loose. If cooling does not return, the thermistor or its wiring has failed and needs a technician.

How much does it cost to repair OP?#

Typically $80 to $200. A thermistor is inexpensive; most of the cost is the labor to open the cabinet, trace the lead, and confirm the break before fitting the new sensor.

How is OP different from SH?#

They are two halves of the same thermistor fault. OP reads open (infinite resistance) while SH reads a near-zero short. OP usually means a broken wire or dead element; SH means a shorted one.

Is an Electrolux refrigerator with OP worth repairing?#

Yes — it is a low-cost sensor fault that says nothing about the compressor or sealed system, so on any reasonably aged unit repair is clearly the better choice than replacement.