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Error code reference

Kenmore Dishwasher Error Code F2E2

User interface cannot communicate with main control; loose user interface connection or wrong control…

Kenmore codesKenmore dishwasher codes

User interface cannot communicate with main control; loose user interface connection or wrong control installed.

First step from the service manual

Unplug dishwasher or disconnect power. Check connections between LCD display module and P1C connector on the control. Check for 5VDC from P1C-2 to P1C-4.

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

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What F2E2 means on a Kenmore dishwasher

The F2E2 error code on a Kenmore dishwasher indicates a communication failure between the user interface (UI) board and the main control board. These two components exchange data continuously during operation, and when that signal path is interrupted or absent, the control system logs F2E2 and halts normal operation. The user interface houses the display, buttons, and the LCD module, while the main control board manages all cycle logic and component outputs. The connection between them runs through the P1C connector on the control board.

The first diagnostic step involves checking the physical connection between the LCD display module and the P1C connector. A loose, corroded, or partially seated connector is the most common trigger for this fault. Once the dishwasher is unpowered, the technician should inspect the connector for bent pins, debris, or signs of moisture damage. After reconnecting and restoring power, the voltage at P1C-2 to P1C-4 should measure 5VDC. This 5-volt reference line is how the main control powers the UI board, and a missing or low voltage reading here points to a control board fault rather than a wiring issue.

If the wiring and voltage check out but the error persists, the cause may be a mismatched or incorrect control board installed in the unit. A replacement control that does not match the dishwasher model will fail to establish proper communication with the UI, producing the same F2E2 code. Verifying the part number of the installed control board against the unit's model number is an important step before replacing any components.

Source: manufacturer service documentation.

Common causes of F2E2

  1. 01

    Loose or unseated P1C connector

    Wiring / connection

    The connector linking the LCD display module to the main control board may have worked loose over time due to vibration. Inspect the P1C connector for secure seating and any signs of corrosion or bent pins.

  2. 02

    Missing or low 5VDC supply voltage

    Part replacement

    The main control board supplies 5VDC from P1C-2 to P1C-4 to power the user interface. If this voltage is absent or out of range, the UI cannot communicate and F2E2 will be triggered, pointing to a faulty main control board.

  3. 03

    Damaged wiring harness between UI and control board

    Part replacement

    The wire harness connecting the user interface to the P1C connector can develop breaks or shorts from repeated door movement. Inspect the harness along its entire length for fraying, pinching, or visible damage.

  4. 04

    Faulty user interface board

    Part replacement

    If the wiring and supply voltage are confirmed good but the error persists, the LCD display module or UI board itself may have failed internally and cannot respond to the control board's communication signals.

  5. 05

    Incorrect or mismatched control board installed

    Part replacement

    A control board that does not match the dishwasher's model number will fail to establish proper communication with the user interface, producing F2E2. Verify the installed control board's part number matches the unit's model.

See the test procedure for each cause

Frequently asked questions about F2E2

What does F2E2 mean on a Kenmore dishwasher?
F2E2 indicates that the user interface board and the main control board cannot communicate with each other. This communication link runs through the P1C connector on the main control. The fault is most often caused by a loose connection, a wiring problem, or an incorrect control board installed in the unit.
Can I fix F2E2 on my Kenmore dishwasher myself?
Some cases of F2E2 can be resolved by a knowledgeable DIYer. Unplugging the dishwasher and reseating the P1C connector is a safe first step that costs nothing. However, if the repair requires checking 5VDC supply voltage or replacing a control board or UI board, a comfort level with basic electrical testing and appliance disassembly is needed. When in doubt, a qualified technician should perform the diagnosis.
Is it safe to use my dishwasher while the F2E2 code is showing?
No, the dishwasher should not be used while F2E2 is active. The error indicates the control system cannot properly communicate with the user interface, which means cycle commands may not be processed correctly. Running the appliance in this state could result in incomplete cycles or unpredictable behavior.
Will resetting my Kenmore dishwasher clear the F2E2 error?
A reset by unplugging the dishwasher for a few minutes may temporarily clear the code, but it will return if the underlying cause is not fixed. If a loose connection was responsible and it reseats itself during the process, the reset may hold. Persistent F2E2 errors require a proper diagnosis of the wiring and control board.
How much does it cost to repair the F2E2 error on a Kenmore dishwasher?
Repair costs vary depending on the failed component. If only a connector needs reseating, there is no parts cost. A replacement user interface board typically runs in the range of $50 to $150 in parts, while a main control board can range from $100 to $250 or more. Adding a technician's labor fee of $75 to $150 per hour brings the total repair estimate to anywhere from $150 to $400 depending on what is needed.

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