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Error code reference

Viking Range Error Code DSI 5 Flashes

DSI control fault

Viking codesViking range codes

DSI control fault — 5 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 5 Flashes means on a Viking range

The DSI 5 Flashes error on a Viking range indicates a fault within the DSI (Direct Spark Ignition) control module itself. The control signals this condition by flashing 5 times in a repeating cycle every 4 seconds. The DSI module is the electronic brain of the ignition system, responsible for generating the high-voltage spark, monitoring flame presence via a sensor, and coordinating the gas valve operation during burner startup. A control-level fault of this type means the module has detected an internal error or has failed to execute its ignition sequence correctly.

Common triggers for this fault include an internal failure of the DSI board, a disruption to the module's power supply, or wiring issues in the circuit that feeds or connects to the control. In some cases, a transient electrical event such as a power surge can cause the module to enter a fault state without permanent damage. This is why the first diagnostic step is a power cycle: cutting power to the unit allows the DSI module to reset and attempt normal operation again on restart.

If the 5-flash fault code returns after cycling power, the DSI control module is considered failed and requires replacement. Unlike sensor or valve faults that can stem from external wiring or component issues, a persisting control-level fault points directly to the module itself as the defective component. Technicians should confirm correct supply voltage to the module before condemning it, to rule out an upstream electrical problem feeding the fault.

Source: manufacturer service documentation.

Common causes of DSI 5 Flashes

  1. 01

    Failed DSI control module

    Part replacement

    The DSI module itself has developed an internal fault and can no longer operate correctly. This is the most likely cause when the 5-flash code persists after a power cycle.

  2. 02

    Transient power surge or voltage spike

    Wiring / connection

    A brief electrical disturbance can cause the DSI module to enter a locked fault state without permanently damaging it. A full power cycle often clears this condition.

  3. 03

    Interrupted or unstable power supply to the DSI module

    Wiring / connection

    Low or inconsistent voltage reaching the DSI control can cause it to fault repeatedly. Check the supply voltage at the module's input terminals to rule this out before replacing the board.

  4. 04

    Loose or damaged wiring to the DSI module

    Wiring / connection

    Corroded connectors or a damaged wire harness feeding the DSI module can disrupt normal operation and trigger a control fault. Inspect all connections to and from the module for damage or looseness.

See the test procedure for each cause

Frequently asked questions about DSI 5 Flashes

What does DSI 5 Flashes mean on a Viking range?
The DSI 5 Flashes code indicates a fault within the Direct Spark Ignition control module. The module signals this by flashing 5 times every 4 seconds. It means the ignition control has detected an internal error and cannot operate normally. The first step is to cycle power to the range; if the code returns, the DSI module needs replacement.
Will resetting my Viking range clear the DSI 5 Flashes error?
A power cycle is the recommended first step and can clear the fault if it was triggered by a transient electrical event. To reset, disconnect power to the range for at least 30 seconds and then restore it. If the 5-flash code reappears after the reset, the DSI control module has a permanent internal fault and resetting will not resolve it.
Is it safe to use my Viking range when it shows the DSI 5 Flashes error?
When the DSI module is in a fault state, the ignition system may not operate reliably, meaning burners may not light or may not be monitored correctly during startup. It is best to avoid using the affected burners until the fault is diagnosed and resolved. If you smell gas at any point, turn off the gas supply and ventilate the area immediately.
How much does it cost to fix a DSI 5 Flashes error on a Viking range?
If the fix is simply a power cycle, there is no parts cost involved. If the DSI control module requires replacement, parts alone typically range from around $80 to $250 or more depending on the specific model. Adding professional labor, total repair costs generally fall in the range of $150 to $400. Getting a firm quote from a technician before authorizing the repair is recommended.
How do I know if the DSI module is bad or if something else is causing the 5 Flashes code?
Start by cycling power to the range. If the fault clears and does not return, an external electrical disturbance was likely the cause. If the code returns immediately, inspect the wiring and connectors to the DSI module for damage or loose connections, and verify that the module is receiving correct supply voltage. If the wiring and voltage check out and the 5-flash code persists, the DSI module itself is the failed component and should be replaced.

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