Viking Range Error Code LED on continuously

A continuously lit LED on a Viking range indicates a control fault within the DSI (Direct Spark Ignition) module. The DSI module manages spark generation, flame sensing, and gas valve control. This fault means the module has detected an internal error rather than a simple ignition failure. The range should not be operated until the fault is resolved.

It is not recommended to operate the range while this fault is active. The DSI module controls both the ignition spark and the gas valve, so a faulted module may not properly regulate gas flow or ignition timing. To avoid any risk of uncontrolled gas release or ignition failure, the fault should be diagnosed and resolved before resuming normal use.

If the fault requires DSI module replacement, parts alone typically range from around $80 to $250 or more depending on the specific Viking model. Professional labor to diagnose and replace the module generally adds $100 to $200 to the total cost. If the fault clears with a power cycle or is traced to a wiring issue, the repair cost may be minimal.

A power cycle is the recommended first step and will clear the fault if it was caused by a temporary voltage irregularity or a momentary software glitch in the DSI module. Turn off the range, disconnect it from power for at least 60 seconds, then restore power and check the LED. If the LED comes back on continuously, the module has a persistent hardware fault and will need to be replaced.

Start by cycling power to the range for at least 60 seconds to allow the DSI module to reinitialize. If the LED returns to a continuous ON state after power is restored, the DSI module itself needs to be replaced. Inspect the wiring harness connected to the module for loose connectors, shorts, or visible damage before installing a new module, as wiring faults can cause the same symptom.