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Error code reference

KitchenAid Range Error Code F6-E4

Lost communication between display board and power board.

KitchenAid codesKitchenAid range codes

Lost communication between display board and power board.

First step from the service manual

Unplug range or disconnect power, open back panels and ensure P2 connector is fully plugged in on both the power board and display board.

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

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What F6-E4 means on a KitchenAid range

The F6-E4 error code on a KitchenAid range indicates a loss of communication between the display board and the power board. These two control boards work together to manage all range functions: the display board handles user inputs and feedback while the power board controls heating elements, ignition, and other high-voltage outputs. Communication between them travels through a wiring harness and connector designated P2. When this signal is interrupted or absent, the range cannot operate safely and displays F6-E4 to alert the user.

The most common cause of this fault is a loose, damaged, or partially seated P2 connector. Vibration during normal use or during installation can cause this connector to work loose at either end, the power board or the display board. The first diagnostic step involves disconnecting power to the range, removing the back panels, and physically inspecting the P2 connector at both board connections to confirm it is fully seated and latched.

If the connector is secure and the error persists, the wiring harness between the boards should be inspected for pinched wires, burn marks, or breaks. Corrosion at the connector pins can also disrupt the signal. In cases where the harness and connector are in good condition, one or both control boards may have failed internally, requiring board-level diagnosis and likely replacement of the display board or power board.

Source: manufacturer service documentation.

Common causes of F6-E4

  1. 01

    Loose or unseated P2 connector

    Wiring / connection

    The P2 connector linking the display board and power board may have worked loose at one or both ends. Inspecting and firmly reseating this connector at both board locations is the required first step.

  2. 02

    Damaged wiring harness

    Part replacement

    The harness running between the two boards may have a pinched, broken, or burned wire that interrupts communication. Visually trace the harness for any obvious damage after reseating the connector.

  3. 03

    Corroded or damaged connector pins

    Part replacement

    Moisture or heat exposure can corrode the pins inside the P2 connector, causing intermittent or complete loss of signal even when the connector appears seated. Inspect the pins closely for discoloration or buildup.

  4. 04

    Failed display board

    Part replacement

    If the harness and connector are in good condition, the display board itself may have failed internally and can no longer send or receive communication signals. Board replacement would be required.

  5. 05

    Failed power board

    Part replacement

    Similarly, the power board may have sustained an internal failure affecting its communication circuit. This is typically diagnosed after ruling out connector and harness issues and a display board fault.

See the test procedure for each cause

Frequently asked questions about F6-E4

What does F6-E4 mean on a KitchenAid range?
F6-E4 means the range has detected a loss of communication between the display board and the power board. These two boards must exchange signals continuously for the range to operate. The fault is most often traced to the P2 connector that links them, which may have come loose inside the unit.
Can I fix the F6-E4 error myself?
In many cases, yes. Start by unplugging the range and removing the back panels to locate and firmly reseat the P2 connector at both the display board and the power board. If the error returns after reconnecting power, the repair becomes more involved and may require harness or board replacement, which many homeowners prefer to leave to a technician.
Will resetting the range clear the F6-E4 code?
Unplugging the range for a few minutes may temporarily clear the code, but if the underlying connection issue is not fixed, the F6-E4 error will return once power is restored and the boards attempt to communicate again. A reset alone is not a repair.
Is it safe to use my KitchenAid range while F6-E4 is displayed?
No. When F6-E4 is active, the display board and power board are not communicating properly, which means the range cannot reliably control its heating elements or other functions. You should avoid using the range until the fault is diagnosed and resolved.
How much does it cost to repair the F6-E4 error on a KitchenAid range?
If only the connector needs reseating, there may be no parts cost, though a service call typically runs between $75 and $150. If the wiring harness needs replacement, expect parts and labor to fall in the $100 to $250 range. A display board or power board replacement can cost between $200 and $500 or more depending on the specific model and labor rates in your area.

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