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Error code reference

Kenmore Refrigerator Error Code EF

Flow sensor is read as open or shorted.

Kenmore codesKenmore refrigerator codes

Flow sensor is read as open or shorted.

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What EF means on a Kenmore refrigerator

The EF error code on a Kenmore refrigerator indicates that the flow sensor has been read by the control board as either open (no continuity) or shorted (resistance reading at or near zero). The flow sensor is a component that monitors water or refrigerant flow within the system, and the control board continuously checks its signal to verify normal operation. When the sensor's output falls outside the expected resistance or voltage range, the board flags the EF code to alert the technician or user that the circuit has failed in one of these two ways.

An open condition means the electrical circuit through the sensor is broken, which can result from a severed wire, a failed sensor element, or a disconnected harness connector. A shorted condition means two conductors in the circuit are making unintended contact, driving the resistance reading to near zero. Both conditions prevent the control board from receiving a valid signal, and the board cannot distinguish between an actual flow problem and a sensor or wiring failure without further diagnostic testing.

Common contributing factors include corrosion on the sensor connector terminals, wiring harness damage from vibration or pinching, and internal failure of the sensor itself. Before replacing any components, technicians should inspect the wiring harness for visible damage, check connector pin seating, and use a multimeter to measure sensor resistance. Comparing that reading against the expected specification will clarify whether the fault lies in the sensor, the wiring, or the control board.

Source: manufacturer service documentation.

Common causes of EF

  1. 01

    Failed flow sensor

    Part replacement

    The sensor itself can fail internally, producing either no signal (open) or a zero-resistance short. Testing the sensor with a multimeter will reveal a reading that is either infinite or near zero, outside the normal operating range.

  2. 02

    Damaged or broken wiring harness

    Part replacement

    Wires leading to the flow sensor can become pinched, abraded, or broken over time due to vibration or improper routing. A visual inspection of the harness along its full length can identify cuts, fraying, or breaks.

  3. 03

    Corroded or disconnected connector

    Wiring / connection

    The electrical connector at the sensor can develop corrosion on its terminals or become partially unseated, interrupting the circuit. Inspecting the connector for green or white oxidation and reseating it firmly is a key early diagnostic step.

  4. 04

    Control board fault

    Part replacement

    If the sensor and all wiring test within normal parameters, the control board itself may be misreading the sensor signal due to a component failure on the board. This is typically diagnosed only after ruling out the sensor and wiring.

See the test procedure for each cause

Frequently asked questions about EF

What does EF mean on a Kenmore refrigerator?
The EF code on a Kenmore refrigerator means the control board is detecting that the flow sensor circuit is either open or shorted. An open circuit means there is a break in the wiring or the sensor has failed with no continuity. A shorted circuit means the resistance has dropped to near zero, which is equally unreadable by the board. Both conditions prevent the system from monitoring flow properly.
Can I fix the EF error code on my Kenmore refrigerator myself?
A knowledgeable DIYer can start by checking the wiring harness and connector at the flow sensor for visible damage, corrosion, or loose connections, and reseating the connector if needed. Testing the sensor itself requires a multimeter to measure resistance and compare it to the expected value. If the sensor has failed, replacing it is a moderate-difficulty repair. If the control board is at fault, replacement is more involved and may be better suited for a professional technician.
Is it safe to keep using my refrigerator when the EF code is showing?
Operating the refrigerator with an active EF code is not recommended for extended periods, as the control board cannot confirm that flow is occurring normally. This could affect cooling performance or lead to additional component stress over time. You should address the fault as soon as practical to avoid potential food spoilage or further damage.
Will resetting my Kenmore refrigerator clear the EF error code?
Resetting the refrigerator by unplugging it for a few minutes may temporarily clear the EF code, but the code will return if the underlying electrical fault in the flow sensor circuit has not been corrected. A reset is not a repair and should only be used as part of the diagnostic process to confirm whether the fault is persistent. The sensor, wiring, and connectors must be inspected and tested to resolve the issue permanently.
How much does it cost to repair a Kenmore refrigerator with an EF error code?
Repair costs vary depending on the root cause. Replacing a flow sensor typically runs in the range of $50 to $150 for the part, plus labor if a technician is hired. If the control board is at fault, parts alone can range from $100 to $300 or more. Wiring repairs by a technician may fall in the $75 to $200 range depending on the extent of the damage and local labor rates.

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