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Error code reference

Viking Dishwasher Error Code E:10

User interface board communication fault

Viking codesViking dishwasher codes

User interface board communication fault — communication between the main electronic board and user interface board is lost during normal operation.

First step from the service manual

Check cable harness errors, faulty socket installation, faulty electronics, main electronic board, or user interface board.

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

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What E:10 means on a Viking dishwasher

The E:10 error code on a Viking dishwasher indicates a communication fault between the main electronic control board and the user interface board. These two boards work together constantly during operation: the main board processes sensor inputs and controls wash cycle functions, while the user interface board manages button inputs and display output. When the data signal between them is interrupted or lost during a normal cycle, the control system flags E:10 to halt operation and alert the technician to a breakdown in that communication pathway.

The most common root causes involve the wiring harness that connects the two boards. A loose connector, a damaged socket, or a pinched or broken wire in the cable harness can interrupt the serial or low-voltage data signal the boards depend on. Vibration from repeated wash cycles can gradually loosen connectors that were not fully seated during original assembly or a prior repair. Inspecting all connectors and sockets along the harness for secure seating, corrosion, or visible damage is the correct starting point.

If the harness and connectors check out physically and electrically, the fault likely resides in one of the two boards themselves. Either the main electronic control board or the user interface board may have a failed communication circuit, a damaged data port, or an internal component failure. Diagnosing which board is defective typically requires substitution testing or detailed circuit-level inspection, as both boards must be capable of sending and receiving data for the system to operate correctly.

Source: manufacturer service documentation.

Common causes of E:10

  1. 01

    Loose or disconnected cable harness connector

    Wiring / connection

    The wiring harness connecting the main board to the user interface board may have a connector that is partially unseated or has backed out over time. Check each connector along the harness for firm, fully latched engagement.

  2. 02

    Damaged or faulty wiring harness

    Part replacement

    A wire within the harness may be pinched, frayed, or broken, interrupting the communication signal between boards. Visually inspect the entire harness routing for any signs of chafing, burn marks, or physical damage.

  3. 03

    Faulty socket installation on a board

    Part replacement

    A connector socket on either the main board or the user interface board may be cracked, bent, or improperly seated, preventing reliable contact with the harness plug. Inspect both board-side sockets closely for physical defects.

  4. 04

    Failed user interface board

    Part replacement

    The user interface board itself may have a failed internal communication circuit, making it unable to send or receive data from the main board. If the harness and connectors are intact, the interface board becomes a primary suspect.

  5. 05

    Failed main electronic control board

    Part replacement

    The main control board's communication circuitry may have failed, preventing it from maintaining a data link with the user interface board. This is typically diagnosed after the harness and user interface board have been ruled out.

See the test procedure for each cause

Frequently asked questions about E:10

What does E:10 mean on a Viking dishwasher?
E:10 indicates that communication between the main electronic control board and the user interface board has been lost during normal operation. The dishwasher shuts down because the two boards can no longer exchange data needed to run the wash cycle safely. The fault can stem from a loose wire harness connector, a damaged cable, a faulty socket, or a failed board on either end of the connection.
Can I fix the E:10 error on my Viking dishwasher myself?
A knowledgeable DIYer can start by inspecting the wiring harness and all connector sockets between the two boards, since a loose or unseated connector is the most common cause. If the connectors are secure and undamaged, diagnosing a failed board typically requires component-level testing or substitution, which is better suited to an experienced appliance technician. Working around dishwasher electronics also involves exposure to line voltage, so proper precautions are essential.
Is it safe to keep using my Viking dishwasher when E:10 is displayed?
No. The E:10 fault causes the dishwasher to halt operation because the control system cannot function reliably without communication between the two boards. Running the appliance in this state is not recommended, as the machine cannot properly monitor or manage the wash cycle. The fault should be diagnosed and repaired before resuming normal use.
Will resetting my Viking dishwasher clear the E:10 error?
A power reset may temporarily clear the error code, but if the underlying wiring or board fault is still present, E:10 will return once the dishwasher attempts to operate again. Resetting the unit is a reasonable first step to confirm whether the fault is intermittent, but it is not a repair. A persistent E:10 after reset requires hands-on diagnosis of the harness, connectors, and boards.
How much does it cost to repair an E:10 error on a Viking dishwasher?
Repair costs vary depending on which component is at fault. If only a harness or connector needs replacement, parts and labor costs are typically modest, often in the range of $100 to $250. If one of the electronic boards requires replacement, costs can rise to $200 to $600 or more depending on the specific board and labor rates in your area. Obtaining a diagnostic assessment from a qualified technician before ordering parts is advisable.

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