Frigidaire Refrigerator OP error code

The fresh-food temperature sensor circuit is open. The sensor is disconnected or has failed, so the control cannot read that compartment's temperature.

Also shown as: OP

Last updated: October 6, 2026

Quick answer: Frigidaire refrigerator error code OP: temperature sensor open. The most common cause is temperature sensor (thermistor) unplugged. Try this first — power-reset the refrigerator. If that does not clear it, note which compartment shows OP. If the code persists, call a qualified technician.

What causes the OP error?

  • Temperature sensor (thermistor) unplugged
  • Broken or chewed sensor wiring
  • Failed thermistor
  • Corroded sensor connector
  • Control board not reading the sensor

How to fix Frigidaire OP — step by step

Work through these in order, from simplest and safest first. Stop as soon as the code clears.

  1. Power-reset the refrigerator
    Unplug the refrigerator for 5 minutes, then plug it back in. This clears a false open-sensor reading from a glitch. If OP returns, the sensor or its wiring is genuinely bad.
  2. Note which compartment shows OP
    Note which display shows OP and whether that compartment is cooling normally. Share both facts with your technician: it tells them exactly which sensor to test.
  3. Check your warranty first
    If the refrigerator is under warranty, call Frigidaire service instead of opening anything. Sensor replacement is usually covered.
  4. Call a technician for sensor replacement
    Replacing a thermistor means locating the sensor, testing its resistance, and splicing in the new one. A technician can identify the right sensor and replace it without damaging the liner.

When to call a technician

Stop and call a qualified technician if any of these apply:
  • OP returns after a power reset
  • The compartment with the OP code is not holding temperature
  • The thermistor or its wiring needs replacement
  • Multiple sensor codes appear at once (possible board fault)

Frequently asked questions

OP vs SH: what is the difference?

OP means the sensor circuit is open (disconnected). SH means the sensor circuit is shorted. Both point to the same sensor needing replacement, but the failure mode differs.

Which sensor does OP refer to?

The code appears on the display for the compartment whose sensor failed: fresh-food display means the fresh-food sensor, freezer display means the freezer sensor.

Can OP clear on its own?

Sometimes. If a connector worked loose, a reset plus reseating clears it. If the sensor itself failed, the code returns.

Sources

Every meaning and fix above was checked against official manufacturer documentation:

FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.

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