The TS error on your Frigidaire means the freezer’s temperature sensor (thermistor) has failed or is sending a signal outside the normal range. This usually points to a wiring issue or a faulty sensor that needs testing or replacement.

Error code TS
Meaning Freezer temperature sensor (thermistor) fault or malfunction
Severity Medium — freezer may stop cooling properly until fixed
Time to fix 15–40 minutes
Tools needed Multimeter, Phillips screwdriver

What the TS error means

The TS code stands for “Temperature Sensor” and appears when the freezer’s control board detects a reading from the thermistor that falls outside expected values. This can happen because the sensor itself has failed, the wiring connecting it to the control board is damaged, or the connector has come loose. Similar sensor-related faults show up across the Frigidaire lineup, including the Frigidaire EF Error Code and the Frigidaire EC Error Code, both of which relate to how the appliance monitors internal temperatures.

Common causes

  • Faulty or degraded temperature sensor (thermistor)
  • Loose or corroded wiring connection at the sensor
  • Damaged wiring harness from frost buildup or physical wear
  • Failed main control board misreading sensor signals
  • Moisture or ice interference around the sensor housing
  • Power surge that disrupted the sensor circuit

How to fix the TS error

  1. Power cycle the freezer: Unplug the unit for 5 minutes, then plug it back in. This resets the control board and can clear a temporary sensor glitch.
  2. Locate and inspect the sensor: Find the thermistor, usually mounted near the evaporator coil or inside the freezer wall, and check for visible damage or ice buildup.
  3. Check the wiring connections: Make sure the sensor’s connector is firmly plugged into the control board and that no wires are frayed or pinched.
  4. Test the sensor with a multimeter: Measure resistance across the sensor terminals and compare the reading to Frigidaire’s specification chart for your model; a reading far off the expected range confirms a failed sensor.
  5. Replace the faulty thermistor: If the sensor tests bad, order the correct part number for your model and swap it in, following the wiring diagram inside the freezer panel.
  6. Call a technician if the error persists: If the sensor and wiring test fine but TS keeps appearing, the main control board may need replacement, which is best handled by a qualified appliance repair professional.

FAQ

Can I keep using the freezer while the TS error is showing?
You can, but the freezer may not maintain a safe temperature, so check your food regularly and consider using a backup freezer or cooler until the sensor is fixed.

How much does a replacement temperature sensor cost?
Most Frigidaire thermistors cost between $15 and $40, though prices vary by model, and labor costs will add to this if you hire a technician.

Will resetting the freezer fix the TS error permanently?
A reset sometimes clears the code temporarily, but if the sensor or wiring is actually damaged, the error will return and the faulty part will need to be replaced.