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Error code reference

Kenmore Washer Error Code EF5

Better models only

Kenmore codesKenmore washer codes

Better models only. NTC temperature for the cold water valve over the limits.

First step from the service manual

Hot and cold water hoses switched.

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

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  • 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
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What EF5 means on a Kenmore washer

The EF5 error code appears on select higher-end Kenmore washer models and indicates that the NTC (Negative Temperature Coefficient) thermistor monitoring the cold water inlet valve has detected a temperature reading that falls outside the acceptable operating range. NTC thermistors change resistance in a predictable, inverse relationship with temperature: as temperature rises, resistance drops. The control board continuously monitors this resistance to verify that incoming cold water is within expected thermal parameters. When the reading exceeds or drops below the programmed limits, EF5 is triggered.

The most frequent cause of this fault is a simple installation or connection error: the hot and cold water supply hoses have been swapped at the back of the machine. When hot water is routed through the cold water inlet, the NTC thermistor at that valve detects an unexpectedly high temperature and the control board logs EF5. This is the first thing to verify before suspecting any component failure. Check that the cold water hose connects to the valve labeled "C" or "Cold" and that the hot water hose connects to the valve labeled "H" or "Hot".

If the hoses are connected correctly, the fault may point to a failing NTC thermistor at the cold water inlet valve, a wiring harness issue between the thermistor and the control board, or an actual supply water temperature problem such as a cross-connection in the home plumbing. In rare cases, a faulty main control board that misreads the thermistor signal can also generate this code. Systematic resistance testing of the thermistor and continuity checks on the wiring harness will help isolate the root cause.

Source: manufacturer service documentation.

Common causes of EF5

  1. 01

    Hot and cold hoses reversed

    Wiring / connection

    If the hot water supply hose is connected to the cold water inlet port, the thermistor at that valve will detect an out-of-range high temperature and trigger EF5. Inspect the hose connections at the back of the washer and verify each hose matches its labeled inlet.

  2. 02

    Faulty NTC thermistor at cold water inlet

    Part replacement

    The NTC thermistor embedded in or near the cold water valve can fail and report resistance values that the control board interprets as an over-limit temperature. Testing the thermistor with a multimeter and comparing resistance to the expected temperature-resistance curve will confirm whether it has drifted out of spec or failed open or short.

  3. 03

    Wiring harness damage or poor connection

    Wiring / connection

    A damaged wire, corroded connector, or loose terminal between the cold water inlet thermistor and the main control board can produce erratic resistance readings that trigger EF5. Inspect the harness for pinching, corrosion, or disconnected terminals at both the valve and the control board.

  4. 04

    Home plumbing cross-connection

    Wiring / connection

    A cross-connection in the household plumbing can allow hot water to mix into the cold supply line, raising the temperature at the washer's cold inlet beyond acceptable limits. Run the cold water tap nearest the washer and check whether it runs consistently cold before concluding the washer itself is at fault.

  5. 05

    Defective main control board

    Part replacement

    If all wiring, hose connections, and the thermistor itself test within spec, a failing control board that misinterprets the thermistor signal may be responsible for a persistent EF5 code. Control board replacement is typically a last-resort diagnosis after all other causes have been ruled out.

See the test procedure for each cause

Frequently asked questions about EF5

What does EF5 mean on a Kenmore washer?
EF5 indicates that the NTC temperature sensor monitoring the cold water inlet valve has detected a temperature outside the acceptable limits. This code appears only on select higher-end Kenmore washer models. The most common trigger is having the hot and cold water supply hoses swapped at the back of the machine. Once the root cause is corrected, the error should clear.
How do I fix an EF5 error on my Kenmore washer?
Start by checking the hot and cold water hose connections at the back of the washer to make sure they are not reversed. If the hoses are connected correctly, the next step is to test the NTC thermistor at the cold water inlet valve with a multimeter for resistance values that fall outside the expected range. Also inspect the wiring harness between the thermistor and control board for damage or loose connectors. If all components test normally, a qualified technician should evaluate the main control board.
Is it safe to use my Kenmore washer while it shows EF5?
It is not recommended to continue running the washer while EF5 is active. If the hoses are reversed, the machine may be using hot water when cold is intended, which can damage certain fabrics and affect wash performance. Running the washer repeatedly with an unresolved sensor or wiring fault can also place unnecessary stress on the control board. Resolve the underlying cause before resuming normal operation.
Will resetting my Kenmore washer clear the EF5 code?
A power reset may temporarily clear the EF5 code, but the error will return if the underlying cause has not been corrected. Unplugging the washer for a few minutes and restarting it is a reasonable first step to confirm whether the fault is persistent. If the code comes back after a reset, a physical inspection of the hose connections, thermistor, and wiring is necessary to find and fix the root cause.
How much does it cost to repair an EF5 error on a Kenmore washer?
If the fix is simply reconnecting the hot and cold hoses correctly, there is no parts cost and the repair takes only a few minutes. Replacing an NTC thermistor or cold water inlet valve assembly typically costs between $20 and $80 for the part, plus labor if a technician is used. A main control board, if that turns out to be the cause, can range from $100 to $300 or more depending on the model. Getting a diagnostic visit from a technician usually runs between $50 and $100 before any parts are factored in.

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