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Error code reference

Viking Range Error Code DSI No LED

No power to the DSI module

Viking codesViking range codes

No power to the DSI module — no LED display on DSI board.

First step from the service manual

Check wiring to DSI module.

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

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What DSI No LED means on a Viking range

The DSI No LED condition on a Viking range indicates that the Direct Spark Ignition module is receiving no power, evidenced by a complete absence of LED activity on the DSI board itself. The DSI module is the electronic control center responsible for generating the spark signal that ignites the burners. When the board receives proper power, its onboard LED illuminates to confirm operational status. A completely dark LED means the module is not energized at all, which is a supply-side issue rather than a fault within the ignition circuit itself.

The most direct cause of this condition is a wiring failure between the range's power supply and the DSI module. This includes broken or disconnected wire harness connectors, burnt or corroded terminal pins, or damaged wiring that has shorted or opened due to heat exposure near the burner assembly. Because gas ranges operate near high heat, insulation degradation on wiring routed close to the cooktop or oven cavity is a known failure point.

Beyond wiring, a failed thermal fuse or blown fuse in the circuit feeding the DSI board can also cut power entirely. In some cases, the DSI module itself has suffered an internal failure that prevents it from powering on even when supply voltage is present at its input terminals. Systematic diagnosis starts at the wiring harness and works back toward the power source, confirming voltage at the module input before condemning the board.

Source: manufacturer service documentation.

Common causes of DSI No LED

  1. 01

    Disconnected or damaged wiring harness

    Wiring / connection

    The wiring connector to the DSI module may have come loose, corroded, or suffered heat damage, cutting power to the board entirely. Inspect all connectors and wire runs leading to the DSI module for visible damage, looseness, or burnt insulation.

  2. 02

    Blown fuse in DSI power circuit

    Part replacement

    A fuse protecting the DSI module circuit may have blown due to a surge or short, removing all power from the board. Check any inline fuses or fuse block positions associated with the ignition circuit.

  3. 03

    Burnt or corroded terminal pins

    Wiring / connection

    Individual terminal pins at the DSI module connector can corrode or burn from prolonged heat exposure, creating an open circuit even if the connector appears seated. Inspect each pin for discoloration, pitting, or carbon buildup.

  4. 04

    Failed DSI module

    Part replacement

    If voltage is confirmed present at the module input terminals but the LED remains off, the DSI board itself has likely failed internally. Board replacement is required in this scenario.

  5. 05

    Upstream power supply issue

    Wiring / connection

    A broader power supply problem, such as a failed control board or tripped circuit, could prevent voltage from reaching the DSI module at all. Verify that proper voltage is present at the supply side before focusing diagnostics on the DSI circuit.

See the test procedure for each cause

Frequently asked questions about DSI No LED

What does DSI No LED mean on a Viking range?
DSI No LED means the Direct Spark Ignition module on your Viking range is not receiving power, confirmed by the absence of any LED illumination on the DSI board. Without power to this module, the electronic ignition system cannot function and burners will not spark. The condition points to a supply-side problem such as a wiring fault or blown fuse rather than a failure within the ignition circuit itself.
Can I fix a DSI No LED condition myself?
A knowledgeable DIYer can begin by inspecting the wiring harness and connectors leading to the DSI module for loose connections, corrosion, or visible damage, and by checking any fuses in the ignition circuit. If wiring and fuses check out and voltage is confirmed at the module input, the DSI board itself likely needs replacement, which is a more involved repair. Working near gas components and live electrical circuits carries risk, so if you are not comfortable with both gas appliance safety and electrical diagnostics, professional service is recommended.
Is it safe to use my Viking range when the DSI No LED condition is present?
You should not attempt to use the range in this condition. With the DSI module unpowered, the automatic ignition system is completely non-functional, meaning burners cannot ignite through normal operation. Attempting to manually light burners while the ignition system is in an unknown fault state is not advisable until the root cause has been diagnosed and repaired.
Will resetting the range clear the DSI No LED condition?
A simple power reset is unlikely to resolve this condition because DSI No LED indicates a hardware issue, specifically absent power to the module, rather than a software or logic fault. Unless a loose connector reseats itself during the process, resetting power will not restore the LED or module function. The underlying wiring, fuse, or component fault must be physically identified and corrected.
How much does it cost to repair a DSI No LED issue on a Viking range?
Repair cost depends on the root cause. If the fix is a loose connector or a failed fuse, parts cost is minimal, typically in the range of a few dollars to around $20, though a service call fee will apply if a technician is involved. If the DSI module board itself requires replacement, parts alone can range from roughly $80 to $250 or more depending on the specific model, plus labor. Accurate cost estimates require diagnosis to confirm which component has failed.

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