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Error code reference

Kenmore Refrigerator Error Code E IS

Icing sensor error

Kenmore codesKenmore refrigerator codes

Icing sensor error — the ice compartment sensor has a short, open, or abnormal resistance reading.

First step from the service manual

Check for a loose connection between Main PCB (CON5 pins 11 & 12) 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 IS means on a Kenmore refrigerator

The E IS error code on a Kenmore refrigerator indicates a fault with the icing sensor, also called the ice compartment sensor. This sensor monitors temperature within the ice-making compartment and feeds that data to the main control board. When the board detects a short circuit, an open circuit, or an out-of-range resistance reading from this sensor, it triggers the E IS code and may suspend normal ice-making operations to prevent mechanical damage or unsafe conditions.

The primary diagnostic focus should be on the electrical connection between the sensor and the main PCB. Specifically, the sensor connects through CON5, pins 11 and 12 on the main board. A loose, corroded, or damaged connector at these pins is among the most frequent triggers for this code. If the connection appears intact, the next step is to measure the sensor's resistance directly. An open circuit will read as infinite resistance, while a shorted sensor will read near zero ohms. Either condition falls outside the acceptable range and confirms sensor failure.

Beyond the connector and sensor itself, wiring harness damage along the routing path between the sensor and the board can also produce this error. Physical damage such as pinched wires, moisture intrusion into connectors, or heat-related insulation breakdown can all cause intermittent or permanent resistance abnormalities. Technicians should inspect the full wire run carefully before condemning either the sensor or the PCB.

Source: manufacturer service documentation.

Common causes of E IS

  1. 01

    Loose or disconnected connector at Main PCB

    Wiring / connection

    The sensor connects to the main board at CON5 pins 11 and 12. A loose or partially seated connector here is the most common cause and can often be resolved by reseating the connector firmly.

  2. 02

    Failed icing sensor (open or short circuit)

    Part replacement

    The sensor itself may have developed an internal open circuit or short, resulting in an out-of-range resistance reading. This is confirmed by measuring resistance directly at the sensor terminals.

  3. 03

    Corroded or damaged connector pins

    Wiring / connection

    Moisture or oxidation on the CON5 connector pins can increase resistance or break continuity, mimicking a sensor fault even when the sensor itself is good. Inspect the pins visually and clean or replace the connector as needed.

  4. 04

    Damaged wiring harness

    Part replacement

    The wire run between the icing sensor and the main PCB can be pinched, abraded, or heat-damaged, causing intermittent or permanent resistance errors. A full visual inspection of the harness routing is necessary to rule this out.

  5. 05

    Faulty main PCB

    Part replacement

    If the sensor and all wiring check out within spec, the input circuit on the main control board at CON5 may have failed. Board replacement is typically the last resort after all other causes are eliminated.

See the test procedure for each cause

Frequently asked questions about E IS

What does E IS mean on a Kenmore refrigerator?
The E IS code indicates an icing sensor error, meaning the main control board has detected a short, open circuit, or abnormal resistance reading from the ice compartment temperature sensor. This sensor monitors conditions inside the ice-making section of the refrigerator. The error may cause ice-making functions to stop until the problem is corrected.
Can I fix the E IS error myself?
A knowledgeable DIYer can start by checking the connector at the main PCB, specifically CON5 pins 11 and 12, to ensure it is fully seated and free of corrosion. If you have a multimeter, you can also test the sensor resistance to determine whether the sensor itself has failed. Replacing the sensor is a straightforward repair if you are comfortable with basic appliance disassembly, but board-level repairs should be left to a qualified technician.
Will resetting the refrigerator clear the E IS code?
A power reset may temporarily clear the E IS code, but it will return if the underlying issue with the sensor or its wiring is not repaired. Resetting is useful for confirming whether the fault is intermittent or persistent, but it is not a fix. The sensor connection and resistance should be diagnosed before relying on a reset.
Is the E IS error code a safety concern?
The E IS error itself does not indicate a safety hazard such as a fire or refrigerant leak risk. However, a malfunctioning icing sensor can cause the ice maker to operate incorrectly, potentially leading to ice production problems or compartment temperature irregularities. It is best to address the error promptly to avoid secondary issues with food or ice quality.
How much does it cost to repair the E IS error on a Kenmore refrigerator?
Repair costs depend on the root cause. If only a loose connector needs reseating, the repair may cost little to nothing beyond a service call fee, typically in the range of $75 to $150. A replacement icing sensor usually costs between $20 and $60 for the part, with labor adding to the total. A main PCB replacement is the most expensive scenario, with parts and labor potentially ranging from $200 to $500 or more depending on the model.

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