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Error code reference

Viking Range Error Code DSI 2 Flashes

DSI control fault

Viking codesViking range codes

DSI control fault — 2 flashes every 4 seconds.

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
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What DSI 2 Flashes means on a Viking range

The DSI 2 Flashes error code on a Viking range indicates a fault within the DSI (Direct Spark Ignition) control module. The signal pattern is two flashes repeating every four seconds, which is the control board's way of reporting that it has detected an internal fault condition. The DSI control is the electronic brain behind the gas ignition sequence, managing the spark timing, gas valve activation, and flame sensing functions that allow the burner to light and stay lit safely.

When the DSI control detects an internal fault it cannot recover from, it enters this two-flash fault state and halts normal ignition operation. This is distinct from ignition failures caused by a dirty igniter or failed gas valve. The fault originates within the control module itself, meaning the module's internal logic or circuitry has reached a state it cannot self-correct. This can be triggered by a transient electrical event such as a power surge, or by gradual component degradation inside the module over time.

The recommended first step is to cycle power to the range completely, which clears the control's working memory and allows it to reinitialize. If the two-flash fault code returns after a full power cycle, the DSI control module has failed and requires replacement. There is no field repair procedure for the module itself. Continuing to operate the range with a faulted DSI control is not advisable, as the ignition sequence will not function correctly and the gas valve behavior may be unpredictable.

Source: manufacturer service documentation.

Common causes of DSI 2 Flashes

  1. 01

    Failed DSI control module

    Part replacement

    The DSI control module itself has developed an internal fault due to component degradation or failure. This is the primary cause when the two-flash code persists after a full power cycle.

  2. 02

    Power surge or voltage spike

    Wiring / connection

    A transient voltage event can force the DSI control into a latched fault state. Cycling power clears this in some cases, but a severe surge can permanently damage the module.

  3. 03

    Intermittent wiring fault to DSI control

    Wiring / connection

    Loose or corroded wiring connections at the DSI control module can cause the board to register an internal fault. Inspect connectors at the module for damage, corrosion, or loose pins before condemning the board.

  4. 04

    Moisture or contamination on control board

    Part replacement

    Boilover spills or heavy steam exposure can introduce moisture onto the DSI board, causing erratic behavior or a latched fault condition. Inspect the board for visible residue or corrosion traces.

See the test procedure for each cause

Frequently asked questions about DSI 2 Flashes

What does DSI 2 Flashes mean on a Viking range?
The DSI 2 Flashes code means the Direct Spark Ignition control module has detected an internal fault and is signaling it with two flashes every four seconds. The DSI control manages the gas ignition sequence for the burners. When this fault is active, the ignition system will not operate normally. The code points specifically to the control module rather than to the igniter or gas valve.
Will resetting my Viking range clear the DSI 2 Flashes error?
A power cycle is always the recommended first step and can clear the fault if it was triggered by a temporary electrical event. To reset, turn off the range and disconnect power for several minutes before restoring it. If the two-flash pattern returns after the reset, the DSI control module has a persistent internal fault and will need to be replaced.
How do I fix the DSI 2 Flashes error on my Viking range?
Start by cycling power to the range completely and allowing it to reinitialize. If the fault code clears and the range ignites normally, no further action is needed. If the two-flash code returns, the DSI control module must be replaced. Before replacing the module, it is worth inspecting the wiring connections at the board for looseness or corrosion, as a connection issue can sometimes trigger a fault.
Is it safe to use my Viking range while the DSI 2 Flashes code is active?
Operating the range with an active DSI fault is not recommended. The DSI control governs the ignition sequence and gas valve behavior, and a faulted module means those functions may not work correctly or predictably. Until the fault is resolved, the burners may fail to light or may not sequence properly, creating a potential gas accumulation risk.
How much does it cost to fix a DSI 2 Flashes error on a Viking range?
If the DSI control module requires replacement, parts costs typically range from around $150 to $350 or more depending on the specific model, with professional labor adding another $100 to $200 in most cases. If the fault was caused only by a power surge and clears after a reset, there may be no parts cost at all. Getting a quote from a qualified technician after diagnosis will give you the most accurate estimate for your specific unit.

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