mypros+
Error code reference

Kenmore Refrigerator Error Code Er RS2

Abnormal Refrigerator Sensor (2)

Kenmore codesKenmore refrigerator codes

Abnormal Refrigerator Sensor (2) - cut or short circuit wire on refrigerator sensor 2 (middle room).

First step from the service manual

Check for a loose connection in CON7; check Gray to Gray wires.

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

MyPros+ Max

Get the full diagnostic procedure for Er RS2.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What Er RS2 means on a Kenmore refrigerator

The Er RS2 error code on a Kenmore refrigerator indicates an abnormal signal from Refrigerator Sensor 2, which monitors the middle compartment of the refrigerator section. This sensor is a thermistor-based component that communicates temperature data to the main control board. When the control board detects a reading outside the expected resistance range, either due to a circuit interruption (open/cut wire) or a short circuit condition, it logs the Er RS2 fault and may reduce cooling efficiency or alter compressor behavior to protect the cabinet.

The primary diagnostic focus for this code is connector CON7 and the associated gray-to-gray wire harness connected to sensor 2. A loose, corroded, or damaged connection at CON7 is the most common trigger for this fault, as even minor contact issues can cause the control board to read the sensor signal as out of range. Beyond the connector, the wiring harness itself should be inspected along its full routing path for pinch points, chafing, or breaks that could cause an open circuit or a short to ground or to an adjacent wire.

If the wiring and connector check out as intact, the sensor itself may have failed. A faulty thermistor will produce an incorrect resistance reading that the board interprets as a cut or shorted circuit. Resolving this code requires confirming proper resistance at the sensor leads, verifying continuity through the gray wire harness, and ensuring CON7 is fully seated and free of corrosion or bent pins.

Source: manufacturer service documentation.

Common causes of Er RS2

  1. 01

    Loose or faulty connection at CON7

    Wiring / connection

    The gray-to-gray wire connector at CON7 may not be fully seated, or the terminals inside the connector may be corroded or bent. Inspect and reseat CON7 first, as this is the most frequent cause of Er RS2.

  2. 02

    Damaged or broken wire in the harness

    Part replacement

    The gray wire leading to refrigerator sensor 2 may be cut, pinched, or broken somewhere along its routing path. A continuity test on the wiring from CON7 to the sensor will confirm whether an open circuit exists.

  3. 03

    Short circuit in the sensor wiring

    Part replacement

    If the gray wire insulation is compromised, the wire may be shorting to ground or to an adjacent conductor. This produces an out-of-range signal at the control board and triggers the Er RS2 fault.

  4. 04

    Failed refrigerator sensor 2 thermistor

    Part replacement

    The middle compartment thermistor itself may have failed internally, causing it to read as an open or shorted circuit even when wiring is intact. Measure the resistance across the sensor leads and compare to the rated specification to confirm failure.

  5. 05

    Corroded or damaged connector terminals

    Wiring / connection

    Moisture intrusion into CON7 can cause terminal corrosion that increases resistance in the circuit to the point where the control board flags the sensor as abnormal. Inspect the connector pins closely for green or white oxidation deposits.

See the test procedure for each cause

Frequently asked questions about Er RS2

What does Er RS2 mean on a Kenmore refrigerator?
Er RS2 indicates an abnormal signal from Refrigerator Sensor 2, the thermistor that monitors the middle section of the refrigerator compartment. The control board has detected either an open circuit (cut wire) or a short circuit condition in the sensor 2 circuit. The first place to check is connector CON7 and the gray-to-gray wiring connected to that sensor.
Can I fix the Er RS2 error code myself?
Many cases of Er RS2 are caused by a loose connection at CON7, which a knowledgeable DIYer can inspect and reseat without special tools. If the connector looks secure, tracing and testing the gray wire harness for continuity and checking the thermistor resistance are the next steps. Actual wiring repairs or sensor replacement require basic electrical skills and the correct replacement parts.
Is it safe to keep using my refrigerator while Er RS2 is displayed?
The refrigerator may continue to run, but without accurate temperature data from the middle compartment sensor, the control board cannot precisely regulate cooling in that zone. Food safety could be at risk if temperatures drift outside safe ranges. It is best to address the fault promptly and use an independent thermometer to monitor the compartment temperature in the meantime.
How much does it cost to repair the Er RS2 error on a Kenmore refrigerator?
If only a loose connection needs to be reseated, the repair may cost nothing beyond your time. Replacing a damaged wire harness section or the sensor 2 thermistor typically runs between $15 and $60 in parts, depending on the component. Adding professional labor usually brings the total repair cost to a range of $100 to $250.
Will resetting my Kenmore refrigerator clear the Er RS2 code?
A power reset by unplugging the unit for a few minutes may temporarily clear the error code display, but if the underlying wiring or sensor problem has not been corrected, the code will return once the control board re-evaluates the sensor circuit. A lasting fix requires identifying and repairing the root cause, whether that is the CON7 connector, the gray wire harness, or the sensor itself.

Related Kenmore refrigerator codes

All Kenmore refrigerator codes
View all 146 Kenmore refrigerator codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass