Viking Range Error Code 2 flashes every 4 seconds (DSI)

This flash pattern indicates a control fault within the DSI (Direct Spark Ignition) module, which is the component that manages spark ignition timing and gas valve operation. The fault is internal to the module itself, not a problem with an external part like the igniter or flame sensor. The range is alerting you that the DSI module needs attention before normal operation can resume.

Start by cycling power to the range to rule out a transient fault. If the code comes back after restoring power, the DSI module requires replacement. This involves disconnecting wiring harnesses and mounting hardware to remove the old module and install a new one. Given that this repair involves gas appliance controls, many technicians and informed DIYers prefer to have a qualified professional perform the module swap.

Repair costs vary depending on the specific model and labor rates in your area. Parts costs for a replacement DSI module typically fall in the range of $80 to $250 or more depending on the module type. Professional labor to diagnose and replace the module generally adds $100 to $200 to the total. Getting a quote from a Viking-authorized service provider before proceeding is a good idea.

A power cycle is the recommended first step and can clear the code if the fault was caused by a temporary electronic glitch. To reset, cut power to the range at the breaker or unplug it, wait a minute, then restore power. If the 2-flash pattern returns, the DSI module has a confirmed internal fault and resetting alone will not resolve it.

Using the range with a confirmed DSI module fault is not recommended. The DSI module controls the gas valve sequencing during ignition, and a faulted module may not reliably manage gas flow if an ignition attempt fails. Continuing to operate the range under these conditions presents a potential gas safety risk. Stop using the affected burners or oven until the module is replaced.