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Error code reference

Kenmore Refrigerator Error Code E rS

Refrigerator sensor error

Kenmore codesKenmore refrigerator codes

Refrigerator sensor error — the refrigerator temperature sensor has a short, open, or abnormal resistance reading.

First step from the service manual

Check for a loose connection between Main PCB (CON7 pins 15 & 16) and the sensor; check sensor resistance.

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

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What E rS means on a Kenmore refrigerator

The E rS error code on a Kenmore refrigerator indicates a fault in the refrigerator compartment temperature sensor circuit. This sensor is a thermistor, a resistive component whose resistance changes predictably with temperature. The main control board continuously monitors the resistance across this sensor to calculate the compartment temperature and regulate the cooling cycle. When the board detects a resistance reading that falls outside the expected range, either too low (short circuit), infinitely high (open circuit), or simply abnormal, it logs E rS and may limit or suspend normal operation to protect stored food and internal components.

The sensor connects to the main PCB at connector CON7, specifically pins 15 and 16. This connection point is the first area to inspect because wiring harness issues at the connector are among the most frequent root causes. A loose, corroded, or damaged connector at CON7 can introduce resistance into the circuit that the board interprets as a faulty sensor reading, even when the sensor itself is functioning correctly. Inspecting the connector for bent pins, corrosion, or partial seating takes only a few minutes and should always precede sensor replacement.

If the connector checks out, the sensor itself should be tested with a multimeter. Resistance values vary by temperature, so consult the specification for the expected range at ambient conditions. A reading of zero ohms points to a short, while an open line with infinite resistance confirms a broken sensor or wiring. Damaged wiring in the harness between the sensor and CON7 can also produce these readings and should be inspected carefully along its full length.

Source: manufacturer service documentation.

Common causes of E rS

  1. 01

    Loose or corroded connector at CON7

    Wiring / connection

    The sensor wiring connects to the main PCB at CON7 pins 15 and 16. A loose, dirty, or partially seated connector at this point can disrupt the signal and trigger the error without any fault in the sensor itself.

  2. 02

    Failed refrigerator temperature sensor (thermistor)

    Part replacement

    The thermistor can fail internally, producing a short (near-zero resistance) or an open circuit (infinite resistance). Testing with a multimeter will confirm whether the sensor is out of its normal resistance range.

  3. 03

    Damaged wiring harness

    Part replacement

    The wiring between the sensor and CON7 can be pinched, chafed, or broken, especially near any routing clips or door hinges. A visual inspection along the full harness length and continuity testing will identify breaks or shorts.

  4. 04

    Faulty main PCB

    Part replacement

    If the connector and sensor both test correctly, the main control board itself may have a damaged input circuit on pins 15 or 16 of CON7. This is a less common cause but should be considered after ruling out the sensor and wiring.

See the test procedure for each cause

Frequently asked questions about E rS

What does E rS mean on a Kenmore refrigerator?
E rS indicates a refrigerator compartment temperature sensor error. The main control board has detected a short, open circuit, or abnormal resistance reading from the thermistor responsible for monitoring the fridge compartment temperature. The fault can originate from a loose wiring connection at the main PCB connector CON7, a failed sensor, damaged wiring, or in rarer cases, the control board itself.
Can I fix the E rS error myself?
Many cases of E rS are caused by a loose connector at CON7 on the main PCB, which a handy homeowner or technician can inspect and reseat without special tools. If the connector is secure, testing the sensor resistance with a multimeter will confirm whether the thermistor has failed and needs replacement. Wiring harness repairs or main board replacement are more involved and may warrant professional service.
Is my food safe while the E rS code is showing?
The refrigerator may not maintain accurate or consistent temperatures when the sensor circuit is faulted, since the control board relies on that sensor reading to regulate cooling. Check the actual compartment temperature with a standalone thermometer. If the fridge is not holding 35 to 38 degrees Fahrenheit, perishable food should be moved to a working unit or kept with ice until repairs are completed.
Will resetting the refrigerator clear the E rS code?
A power reset by unplugging the refrigerator for a few minutes may temporarily clear the error, but the code will return if the underlying sensor circuit fault is not corrected. Resetting is useful to confirm the fault is active and repeatable, but it is not a repair. The connector, sensor resistance, and wiring all need to be checked and addressed.
How much does it cost to repair the E rS error on a Kenmore refrigerator?
If only the connector needs to be reseated or cleaned, the repair can cost nothing beyond your time. A replacement refrigerator thermistor typically runs in the range of $15 to $50 for the part. If professional labor is involved, total repair costs including diagnosis and installation generally fall in the range of $100 to $250, depending on your location and whether additional components like the main PCB also need attention.

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