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Error code reference

Viking Range Error Code 5 flashes (DSI)

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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What 5 flashes (DSI) means on a Viking range

The 5-flash DSI fault on a Viking range indicates a problem with the Direct Spark Ignition control module. The DSI system is responsible for managing the ignition sequence on gas burners or the oven, including generating the spark, monitoring the flame sensor signal, and controlling the gas valve timing. When the DSI control detects an internal fault or fails to complete its ignition cycle correctly, it signals the fault condition with 5 consecutive LED flashes.

This fault typically points to a failure within the DSI control board itself rather than a wiring or sensor issue downstream. The DSI module integrates several functions: spark generation, flame rectification sensing, and valve relay control. An internal component failure, power irregularity, or a sustained ignition error that the board cannot recover from can all trigger this fault state. The board may lock out and refuse further ignition attempts as a safety measure.

The recommended first step is a power cycle, which resets the DSI control and clears any temporary lock-out condition. If the 5-flash fault returns after restoring power and attempting ignition, the DSI control board itself is considered faulty and requires replacement. Continued operation with a faulting DSI module is not advisable, as the ignition sequence may be unreliable or the gas valve control may not function correctly.

Source: manufacturer service documentation.

Common causes of 5 flashes (DSI)

  1. 01

    Failed DSI control board

    Part replacement

    An internal failure within the DSI module itself is the most likely cause when the 5-flash code persists after a power cycle. The board may have a failed relay, capacitor, or logic component that prevents normal ignition operation.

  2. 02

    Power supply interruption or voltage irregularity

    Wiring / connection

    A momentary power surge, voltage drop, or brief outage can cause the DSI control to enter a fault or lock-out state. A power cycle will often clear this if the board itself is still functional.

  3. 03

    Wiring connection issue to the DSI module

    Wiring / connection

    Loose, corroded, or damaged wiring connections at the DSI board can disrupt its operation and trigger fault detection. Inspect all connectors at the board for signs of heat damage, corrosion, or loose terminals.

  4. 04

    Repeated ignition failure causing lock-out

    Wiring / connection

    If the DSI control attempted ignition multiple times without establishing a flame, it may have locked itself out and triggered the fault code. A power cycle resets this state, but if the underlying ignition problem is not resolved, the fault may return.

See the test procedure for each cause

Frequently asked questions about 5 flashes (DSI)

What does 5 flashes (DSI) mean on a Viking range?
Five flashes on a Viking range indicates a fault with the DSI, or Direct Spark Ignition, control module. This is the electronic board that manages the ignition sequence for gas burners or the oven. The fault means the DSI control has detected an internal error or lock-out condition it cannot clear on its own. Viking's diagnostic procedure calls for a power cycle first, followed by DSI board replacement if the fault persists.
Will resetting the power clear the 5-flash DSI fault on my Viking range?
A power cycle will clear the fault if the cause was a temporary lock-out or a power irregularity. Turn the range off at the circuit breaker, wait at least 30 seconds, and restore power. If the 5-flash code returns after the reset, the DSI control board has an internal fault and will need to be replaced.
How do I fix the DSI fault on a Viking range?
Start by cycling power to the range at the circuit breaker and retrying ignition. If the 5-flash fault comes back, inspect the wiring connections at the DSI control board for loose or damaged terminals. If connections are intact and the fault persists, the DSI control module requires replacement. This repair involves working with gas appliance components, so a qualified technician is recommended if you are not experienced with range repairs.
Is it safe to use my Viking range when it shows a DSI fault?
Using the range while the DSI fault is active is not advisable. The DSI module controls the ignition sequence and gas valve timing, and a faulty board may not reliably light the burner or may not properly manage gas flow. Continuing to attempt ignition with a faulting DSI control introduces a safety risk until the issue is diagnosed and resolved.
How much does it cost to fix a DSI fault on a Viking range?
If only a power cycle is needed, there is no parts cost. If the DSI control board requires replacement, parts costs typically range from around $150 to $400 or more depending on the specific Viking model. Adding professional labor for diagnosis and installation, the total repair cost generally falls in the range of $250 to $600. Costs vary based on your location and the service provider.

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