Whirlpool Refrigerator Error Code RC SENSOR

RC SENSOR indicates that the refrigerator compartment thermistor has been flagged as failed during service diagnostics. The thermistor is a resistance-based temperature sensor located in the fresh food section that the control board uses to regulate cooling. When the board receives a signal outside the expected parameters, it stores this fault code. The code is confirmed through the automated thermistor test that runs automatically after Step 4 of the service diagnostics sequence.

The refrigerator may continue to run, but without an accurate temperature reading from the compartment sensor, the control board cannot regulate cooling cycles reliably. This means the fresh food section could be warmer or colder than the set temperature without any indication. Perishable food safety may be at risk, so it is best to address the fault promptly rather than continue using the appliance without resolution.

A simple power reset may temporarily clear the error code from the display, but it will return if the underlying thermistor fault still exists. The only way to confirm the fault is resolved is to run the automated thermistor test through the service diagnostics mode after making any repairs. Clearing the code without fixing the root cause does not restore proper temperature regulation in the fresh food compartment.

A knowledgeable DIYer can attempt some steps, such as checking and reseating the thermistor wiring harness connector and inspecting for visible damage or corrosion. If the connector appears sound and the fault remains, replacing the refrigerator compartment thermistor is a relatively straightforward repair. However, fully confirming the fault requires entering service diagnostics mode and running the automated thermistor test, which may be unfamiliar territory for those without appliance repair experience.

If only the thermistor requires replacement, the part typically costs in the range of $15 to $50, and a DIY repair can keep total costs low. If a technician is needed for diagnostics and replacement, expect labor plus parts to fall in the range of $100 to $250 depending on your location and the service provider. A faulty main control board, if that turns out to be the cause, is a more expensive repair with parts and labor potentially ranging from $200 to $450 or more.