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Error code reference

Kenmore Refrigerator Error Code R2

Refrigerator sensor open or short circuit detected.

Kenmore codesKenmore refrigerator codes

Refrigerator sensor open or short circuit detected.

First step from the service manual

Check each sensor connection.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What R2 means on a Kenmore refrigerator

The R2 error code indicates the Kenmore refrigerator's control board has detected either an open circuit or a short circuit in the refrigerator compartment temperature sensor. An open circuit means the signal wire is broken or disconnected, producing no resistance reading. A short circuit means two conductors are touching where they should not be, producing a reading that falls outside the sensor's valid resistance range. Either condition makes the control board unable to trust the temperature data coming from that sensor, so it flags R2 and may alter or disable normal cooling operations.

For homeowners, the refrigerator compartment sensor is a small thermistor mounted inside the fresh food section. Its job is to continuously report the compartment temperature to the main control board so the board can cycle the compressor and fans correctly. When this sensor stops communicating properly, the refrigerator loses its ability to regulate temperature accurately. Your food may get too warm or too cold depending on how the control board responds to the fault.

The first place to check is the physical connection between the sensor and its wiring harness. Loose, corroded, or damaged connectors are a frequent cause of this code and can sometimes be resolved without replacing the sensor itself. If the connector checks out, testing the sensor's resistance with a multimeter will confirm whether the sensor has failed internally.

Source: manufacturer service documentation.

Common causes of R2

  1. 01

    Loose or disconnected sensor wiring harness connector

    Wiring / connection

    The refrigerator compartment sensor plugs into a wiring harness connector that can work loose over time due to vibration or during routine service. A disconnected connector creates an open circuit, which immediately triggers R2.

  2. 02

    Failed refrigerator compartment temperature sensor

    Part replacement

    The thermistor element inside the sensor can fail open or short internally, producing a resistance reading the control board rejects as invalid. A multimeter test across the sensor terminals will show infinite resistance (open) or near-zero resistance (short) when the sensor has failed.

  3. 03

    Damaged or pinched sensor wiring harness

    Part replacement

    The wire running from the sensor to the control board can be pinched by a drawer, shelf bracket, or door hinge, causing a short or break in the circuit. Physical inspection of the full wire run is needed to locate damage.

  4. 04

    Faulty main control board

    Part replacement

    If the sensor and all wiring test within spec but R2 persists, the input circuit on the main control board that reads the sensor signal may have failed. This is the least likely cause and should only be considered after all wiring and sensor components are confirmed good.

See the test procedure for each cause

Frequently asked questions about R2

What does the R2 error code mean on a Kenmore refrigerator?
R2 means the control board detected an open circuit or short circuit in the refrigerator compartment temperature sensor. The board is no longer receiving a valid resistance signal from the sensor and cannot accurately monitor fresh food compartment temperature. The fault can originate at the sensor itself, the wiring harness, or the connector between them.
How do I fix the R2 error code on my Kenmore refrigerator?
Start by unplugging the refrigerator and locating the refrigerator compartment sensor, typically mounted on the rear wall of the fresh food section. Unplug and firmly reseat the sensor's wiring harness connector, then restore power and check if R2 clears. If the code returns, use a multimeter to measure resistance across the sensor terminals at room temperature and compare it to the spec in your model's service manual. A reading of infinity or near zero confirms a failed sensor that needs replacement.
Is it safe to keep using my Kenmore refrigerator while it shows the R2 code?
Short-term use is possible, but R2 means the refrigerator is operating without reliable temperature feedback from the compartment sensor, which can cause inconsistent cooling. Food safety risk increases the longer the fault is active because the compressor may run too little or too much. Check actual compartment temperature with a thermometer and keep it at or below 40 degrees Fahrenheit. Address the fault as soon as possible rather than leaving it unresolved.
How much does it cost to fix the R2 error code on a Kenmore refrigerator?
If only the sensor needs replacement, the part typically costs between $15 and $40 depending on the model, and most homeowners can replace it in under 30 minutes using a screwdriver. If the wiring harness is damaged, a replacement harness runs $20 to $60 with a similar DIY difficulty level. A service call adds $80 to $150 in labor on top of parts. Main control board replacement is the most expensive outcome, often $150 to $300 for the part alone, and is only warranted after sensor and wiring are ruled out.
Can a loose wire connection cause the R2 code on a Kenmore refrigerator?
Yes, a loose or corroded connector at the refrigerator compartment sensor is one of the most common triggers for R2. A disconnected plug creates an open circuit that the control board reads as a sensor fault. Reseating the connector firmly and checking for corrosion or bent pins costs nothing and should always be the first step before purchasing replacement parts.

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