Frigidaire · Refrigerator Serious

1 SY — Fresh Food Sensor Open

Open-circuit reading on the fresh food (Sensor 1) thermistor on Gallery/Professional units.

Keep using it?
Limited use only
DIY difficulty
Moderate
Verified against
frigidaire.com ↗

How to fix it

  1. Unplug refrigerator.
  2. Inspect and reseat fresh food thermistor harness.
  3. Ohm the sensor — replace if open.
  4. Test continuity of sensor wiring back to main board.
  5. Replace main board if input pin is dead.

Why it happens

Typical signs: 1 SY displayed · Fresh food does not cool to setpoint · Temperature display dashes for fresh food

  • Open thermistor element Sensor has aged out.
  • Broken sensor wire Conductor severed near sensor body.
  • Unplugged harness Connector worked loose.

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.

  • Fresh food thermistor Common replacement
    Amazon →

More Frigidaire refrigerator codes

1F 1F — Ice Maker Fault 1 SH 1 SH — Fresh Food Sensor Shorted 2 SH 2 SH — Freezer Sensor Shorted 3 SH 3 SH — Temperature Sensor Short 3 SY 3 SY — Evaporator Sensor Open 4 SY 4 SY — Ambient / Defrost 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.