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Error code reference

Kenmore Dishwasher Error Code F3E2

Shorted connection or component in temperature sensing circuit; incoming water temperature above 167°F…

Kenmore codesKenmore dishwasher codes

Shorted connection or component in temperature sensing circuit; incoming water temperature above 167°F (75°C); shorted or faulty temperature sensor.

First step from the service manual

Check incoming water temperature. Check operation of temperature sensor in service diagnostics cycle. Unplug and check all components and connections in temperature sensing circuit with meter.

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

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What F3E2 means on a Kenmore dishwasher

The F3E2 error code on a Kenmore dishwasher indicates a fault in the temperature sensing circuit, specifically pointing to a shorted connection or component. The temperature sensor (also called a thermistor) monitors water temperature throughout the wash cycle. When the control detects a short circuit in this sensing circuit, it logs F3E2 and interrupts normal operation. A shorted thermistor typically reads an abnormally low resistance value, which the control interprets as an extremely high temperature signal, triggering the fault.

One of the most common triggers for F3E2 is incoming water that is too hot. If the household water heater is set unusually high and the incoming water temperature exceeds 167°F (75°C), the control will flag this code even if the sensor itself is functioning correctly. This makes checking the actual incoming water temperature the critical first diagnostic step before replacing any components.

Beyond water temperature, the fault can originate from a shorted thermistor, damaged wiring in the sensing circuit, or a corroded or loose connector. To isolate the cause, the sensor should be tested using a meter during the service diagnostics cycle and the circuit wiring should be inspected for pinched, burned, or chafed insulation. Any connection point in the circuit can develop a short to ground or to another conductor, so a systematic continuity and resistance check of all wiring and connectors is necessary for an accurate diagnosis.

Source: manufacturer service documentation.

Common causes of F3E2

  1. 01

    Incoming water temperature too high

    Wiring / connection

    If the household water heater is set above 167°F (75°C), the dishwasher control will flag F3E2 even with a fully functional sensor. Check the water temperature at the kitchen faucet with a thermometer before replacing any parts.

  2. 02

    Shorted or failed temperature sensor (thermistor)

    Part replacement

    A shorted thermistor will present an abnormally low resistance reading when measured with a meter. Run the service diagnostics cycle and test the sensor directly to confirm whether it is producing a valid signal.

  3. 03

    Damaged or pinched wiring in the sensing circuit

    Wiring / connection

    Wiring that has been pinched, chafed against a component, or burned can create a short circuit in the temperature sensing loop. Inspect the full wire harness from the sensor to the control board for any visible damage.

  4. 04

    Corroded or loose connector in the sensing circuit

    Wiring / connection

    Moisture inside the dishwasher can cause connector terminals to corrode, increasing resistance or creating an unintended short. Unplug the dishwasher and inspect all connectors in the temperature sensing circuit for corrosion, moisture, or loose terminals.

  5. 05

    Faulty control board

    Part replacement

    If the sensor, wiring, and connectors all test within spec and the incoming water temperature is confirmed to be below 167°F, a defective control board misreading the sensing circuit signal is possible. This is the least common cause and should only be considered after all other components have been ruled out.

See the test procedure for each cause

Frequently asked questions about F3E2

What does F3E2 mean on a Kenmore dishwasher?
F3E2 indicates a shorted connection or component in the temperature sensing circuit. This can be caused by incoming water that is too hot (above 167°F / 75°C), a shorted or failed thermistor, or damaged wiring and connectors in the sensing circuit. The dishwasher stops normal operation when this code appears to prevent potential damage from uncontrolled temperatures.
Can I fix F3E2 on my Kenmore dishwasher myself?
Some causes of F3E2 are DIY-friendly. If your water heater is set too high, lowering it below 167°F can clear the code without any parts. Inspecting wiring and connectors for visible damage is also within reach for a careful DIYer. Replacing the thermistor is a moderate repair, but always unplug the dishwasher before working on any electrical components.
Is it safe to use my Kenmore dishwasher when F3E2 is showing?
It is not recommended to continue running the dishwasher while F3E2 is active. The code signals a fault in the temperature sensing circuit, meaning the control may not be accurately monitoring water temperature. Operating the unit in this condition could result in improper washing performance or, if water is genuinely overheating, potential damage to internal components.
Will resetting my Kenmore dishwasher clear the F3E2 code?
A reset may temporarily clear the F3E2 code, but it will return if the underlying fault is not corrected. If the root cause is a shorted thermistor, damaged wiring, or persistently high incoming water temperature, the code will reappear once the next cycle begins. Diagnose and repair the cause before relying on a reset.
How much does it cost to repair a Kenmore dishwasher F3E2 error?
Repair costs vary depending on the root cause. If the fix is simply lowering the water heater temperature, there is no parts cost. Replacing a thermistor typically runs in the range of $15 to $50 for the part, with labor adding $75 to $150 if a technician is needed. A control board replacement is the most expensive scenario, often ranging from $150 to $350 or more for parts and labor combined.

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