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Error code reference

Viking Range Error Code 2 flashes every 4 sec

DSI control fault.

Viking codesViking range codes

DSI control fault.

First step from the service manual

Cycle power and retry. If fault remains, replace DSI.

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
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What 2 flashes every 4 sec means on a Viking range

The 2-flash-every-4-second sequence on a Viking range indicates a DSI (Direct Spark Ignition) control fault. The DSI control board is the electronic module responsible for managing the ignition sequence on gas burners. It sends a high-voltage spark signal to the igniter, monitors the flame sensor feedback to confirm ignition, and controls the gas valve accordingly. When this module detects an internal fault or fails to execute its ignition logic correctly, it signals the fault condition through the LED flash pattern.

This fault is distinct from a simple ignition failure. It points specifically to a problem within the DSI control circuit itself, rather than a failed igniter electrode or a gas supply issue. The control board may have experienced a component failure, a loss of proper power input, or a logic error that prevents it from completing the ignition cycle. Wiring harness problems, such as loose or corroded connectors at the DSI board, can also cause the board to report a fault even if the board itself is functional.

The recommended first diagnostic step is to cycle power to the range completely, which clears any temporary logic errors in the DSI module. If the 2-flash fault code returns after restoring power and attempting to operate the burners, the DSI control board is considered faulty and requires replacement. Because the DSI board governs gas valve operation, a confirmed board failure means the affected burner circuit will not operate safely until the repair is completed.

Source: manufacturer service documentation.

Common causes of 2 flashes every 4 sec

  1. 01

    Failed DSI control board

    Part replacement

    The DSI module itself has an internal component failure, preventing it from executing the ignition sequence. This is the most common cause when the fault persists after a power cycle.

  2. 02

    Temporary logic error or power glitch

    Wiring / connection

    A brief power fluctuation or voltage spike can cause the DSI board to enter a fault state without any physical damage. Cycling power to the range fully clears the stored fault in many cases.

  3. 03

    Loose or corroded wiring connectors at the DSI board

    Wiring / connection

    Poor electrical connections at the DSI control board harness can interrupt signal continuity and trigger a fault code. Inspect all connectors to the board for corrosion, looseness, or heat damage.

  4. 04

    Inadequate or interrupted power supply to the DSI module

    Wiring / connection

    If the DSI board is not receiving consistent voltage from the range's main wiring harness, it may report a control fault. Check the supply wiring and connections upstream of the board.

  5. 05

    Control board damaged by moisture or grease intrusion

    Part replacement

    Boilover spills or steam exposure can introduce moisture or grease onto the DSI board, causing shorts or component damage that produces a persistent fault condition.

See the test procedure for each cause

Frequently asked questions about 2 flashes every 4 sec

What does 2 flashes every 4 sec mean on a Viking range?
This flash pattern signals a DSI (Direct Spark Ignition) control fault on your Viking range. The DSI control board is the module that manages the gas burner ignition sequence, and it has detected an internal fault or failure. The range uses the repeating 2-flash pattern to alert you that the ignition control system requires attention. If cycling power does not clear the fault, the DSI board will need to be replaced.
Will resetting the power clear the 2-flash error code on my Viking range?
A power cycle is the first recommended step and will resolve the fault if it was caused by a temporary logic error or power fluctuation. Turn the range off at the breaker or unplug it, wait at least 30 seconds, and restore power before testing the burners again. If the 2-flash code returns after the reset, the DSI control board has a confirmed fault and will need to be replaced rather than simply reset.
Is it safe to use my Viking range while it shows the 2-flash DSI fault?
The DSI control board governs the ignition sequence and gas valve operation for the affected burner circuit. A faulted DSI board means the ignition system is not functioning as designed, which creates an unreliable and potentially unsafe operating condition. It is best to avoid using the affected burner circuit until the fault is diagnosed and the DSI board is replaced if necessary.
How do I fix the 2-flash error code on a Viking range?
Start by cycling power to the range completely at the breaker for at least 30 seconds, then restore power and test the burners. If the 2-flash fault code returns, the DSI control board requires replacement. Before replacing the board, inspect the wiring harness connectors at the DSI module for looseness, corrosion, or heat damage, as a poor connection can also trigger this fault.
How much does it cost to fix a DSI control fault on a Viking range?
Repair costs depend on whether the DSI board itself needs replacement or if the fix is limited to correcting a wiring connection issue. DSI control board parts for Viking ranges typically range from around $100 to $300 or more depending on the specific model. Adding professional labor for diagnosis and installation, total repair costs commonly fall in the range of $200 to $500. Getting a firm quote from a qualified technician after diagnosis will give you the most accurate estimate for your specific unit.

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