Viking Range Error Code 2 flashes every 4 seconds

The 2 flashes every 4 seconds pattern on a Viking range indicates a control fault originating within the DSI (Direct Spark Ignition) module. The DSI module is the electronic control board responsible for managing the ignition sequence on gas burners, including generating the spark signal, monitoring for a flame sense signal, and controlling the gas valve timing. When the module detects an internal fault condition it cannot recover from on its own, it signals this error pattern to alert the technician that the board itself has malfunctioned rather than a downstream component like the igniter or gas valve.

This type of control fault typically results from the DSI module's internal logic or circuitry failing to operate within expected parameters. Common triggers include power surges or transient voltage spikes that damage the board's components, prolonged exposure to heat or grease contamination that degrades internal circuitry, or simply electronic component failure over time. Unlike sensor-related faults where a wiring issue or failed peripheral component is the root cause, a DSI control fault points to the module itself as the source of the problem.

The recommended first diagnostic step is to cycle power to the range, which gives the DSI module a chance to reset and clear any transient fault condition that may have caused a false trigger. If the 2-flash pattern returns after power is restored, the DSI module has confirmed an internal fault and will require replacement to restore normal ignition operation. Attempting to operate the range with a faulted DSI module is not reliable, as ignition sequencing and flame monitoring functions may be compromised.