Frigidaire · Refrigerator Moderate

OP — Sensor Circuit Open

Open-circuit indication on a temperature sensor input — generic sensor-open fault on some Frigidaire models.

Keep using it?
Yes, with caution
DIY difficulty
Moderate
Verified against
frigidaire.com ↗

How to fix it

  1. Unplug refrigerator.
  2. Identify which compartment displays OP (fresh food side or freezer side).
  3. Ohm the corresponding thermistor and replace if open.
  4. Reseat or repair wiring.
  5. Replace main board if input is dead.

Why it happens

Typical signs: OP shown in temperature display · Cooling control degraded · Possible defrost issues

  • Open thermistor Sensor element failed.
  • Disconnected sensor Connector unseated.
  • Broken wire Conductor severed.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

More Frigidaire refrigerator codes

1F 1F — Ice Maker Fault 1 SH 1 SH — Fresh Food Sensor Shorted 1 SY 1 SY — Fresh Food Sensor Open 2 SH 2 SH — Freezer Sensor Shorted 3 SH 3 SH — Temperature Sensor Short 3 SY 3 SY — Evaporator Sensor Open

All Frigidaire codes → All refrigerator codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: frigidaire.com.