Can I keep running the equipment with this fault active?

Generally no. Faults on Appliance units are emitted when a sensor, safety, or control circuit is outside its operating envelope. Running through an active fault risks compressor, heater, or control-board damage. Diagnose and clear the fault first.

What part is most commonly replaced for Whirlpool Refrigerator Thermistor Replacement - Signs & How-To?

The most frequently replaced parts for Whirlpool Refrigerator Thermistor Replacement - Signs & How-To are listed in the Parts Reference section of this guide with OEM part numbers and typical price ranges. Check the table for direct replacements.

Is Whirlpool Refrigerator Thermistor Replacement - Signs & How-To a DIY repair or do I need a technician?

Sensor swaps, fan motor replacements, and condenser cleaning are typical DIY-level repairs. Anything involving refrigerant, gas, or high-voltage (>240V) work requires a licensed technician for both safety and code-compliance reasons.

Whirlpool Refrigerator Thermistor Replacement - Signs & How-To

Q: What does Whirlpool Refrigerator Thermistor Replacement - Signs & How-To mean?

Warm cabinet, inconsistent temps, or control board errors mean the thermistor is bad. Replacing the sensor restores accurate temperature control.

Q: How do I fix Whirlpool Refrigerator Thermistor Replacement - Signs & How-To?

Follow the step-by-step diagnosis below. The most likely fix is identified by checking power, sensor resistance, and control-board signals in order — using a multimeter and the part numbers documented in the parts reference table.

Whirlpool Refrigerator Thermistor Replacement — What This Part Does

The thermistor is a temperature sensor that measures air temperature inside the refrigerator or freezer compartment and sends that data to the control board. The board uses this reading to cycle the compressor and damper to keep the cabinet at your set temperature. Thermistors fail when the sensor element drifts out of its resistance range, when wiring or connectors corrode or break, or when moisture damages the sensor or harness. A failed thermistor sends invalid data to the control, so the system cannot regulate cooling and the cabinet drifts warm or fluctuates.

Whirlpool uses many different thermistor part numbers across models. On some designs the sensor can be replaced by itself as a bare component. On others it is part of a damper assembly or evaporator fan motor assembly and you must replace the whole unit. Always confirm your model’s specific part and service procedure before ordering.

Jump to Replacement Steps

Signs It Needs Replacing

Warm refrigerator or freezer compartment Cabinet temperature is higher than the set point because the control board is not getting valid temperature feedback.
Temperature swings or inconsistent cooling The compartment cycles between too cold and too warm because the sensor reading is drifting or intermittent.
Error code or fault display The control board displays a thermistor or sensor fault code, though the exact code depends on your model and control platform.
Compressor runs constantly or not at all The control cannot modulate compressor run time correctly without a valid temperature input from the sensor.
Sensor reads incorrect resistance When you test the thermistor with a multimeter at room temperature and in ice water, the resistance is outside specification or does not change.
Visible damage to sensor or wiring Cracks, corrosion, broken insulation, or loose connectors at the thermistor or harness indicate physical failure.

How to Replace It

Unplug the refrigerator or shut off the circuit breaker.
Locate the thermistor by checking your model’s service sheet or parts diagram (common locations are the air tower, damper housing, or evaporator cover).
Remove the applicable cover, bin, or control assembly to access the sensor and its connector.
Disconnect the thermistor plug from the wiring harness or control board.
Test the old sensor with a multimeter set to ohms: measure resistance at room temperature (a typical Whirlpool thermistor reads about 2.75 kΩ at 77°F) and again in ice water (resistance should change significantly), then compare to your model’s resistance chart.
If the sensor is serviceable separately, cut the leads close to the old thermistor, strip the wire ends, splice in the new sensor leads with butt connectors, and cover the connection with heat-shrink tubing.
If your model requires replacing a complete assembly (damper assembly or evaporator fan motor assembly), remove the old unit and install the new assembly with the integrated thermistor.
Route the new sensor into its retainer or slot, reconnect the plug, and reinstall all covers and bins.
Restore power and monitor the compartment temperature to confirm the control board is now regulating cooling correctly.

The Part You Need

Part	Notes
Whirlpool refrigerator thermistor / temperature sensor	Amazon \| Part number is model-specific. Find your model and serial number on the plate inside the fresh-food compartment or on the left wall, then cross-reference the exact thermistor or assembly for your unit.

If this part is failing you may also see one of these codes:

When to Call a Pro

If you are not comfortable using a multimeter to measure resistance in kilohms, or if the thermistor is part of a sealed evaporator or damper assembly that requires removing the entire air tower or refrigerant lines, call a tech. If you replace the sensor and the fault code or warm cabinet persists, the control board or another circuit may be at fault and a technician with a service manual and model-specific resistance chart can isolate the real failure.