Viking Range Error Code 3 flashes (DSI)
Ignition lockout
What the 3 flashes (DSI) error code actually means
Your Viking range tried to light the burner several times and could not detect a flame, so it stopped trying and locked itself out for safety. This is usually caused by a gas supply issue, a problem with the igniter, or a faulty valve that controls gas flow to the burner. The range will not attempt to light again until the problem is fixed and the lockout is reset.
The full 3 flashes (DSI) procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
Or subscribe: $29/month for unlimited access to all codes plus Max AI diagnostics.
Most common causes of 3 flashes (DSI)
- 1Interrupted or insufficient gas supply
- 2Faulty or disconnected spark lead
- 3Mispositioned or fouled electrode
- 4Failed gas solenoid valve
- 5Clogged burner ports
Most DIYers save hundreds by diagnosing before ordering parts.
$29/month · Cancel anytime · Or $9.95 3-day pass
Questions people ask about 3 flashes (DSI)
What does 3 flashes (DSI) mean on a Viking range?
Is it safe to keep using my Viking range when the DSI lockout code is active?
How much does it cost to repair a Viking range showing the 3-flash DSI code?
How do I fix a 3-flash DSI lockout on my Viking range?
Will resetting my Viking range clear the 3-flash DSI code?
78,000+ service manuals · 160,000+ error codes · 55+ brands
Get Started$29/month · Cancel anytime · Or $9.95 3-day pass