My KitchenAid (Whirlpool) gas oven sparks, lights, and then turns off after about 10 seconds. It has worked flawlessly the last few years and started doing this last week.

After troubleshooting using the Whirlpool Direct Spark Ignition (DSI) Job Aid (Part No. 8177893), I thought I had isolated the issue to a faulty DSI. I have AC to the DSI, but found that the DC voltage across J1-1 (bake) and J1-2 drops from about 15V DC to zero at exactly the same time the oven flames out.

Furthermore, the resistance (measured at the DSI to save my wood floors from sliding the oven out) for J1-1 (bake) to J1-2 and J1-3 (broil) to J1-2 is exactly the same. It should also be noted that the broil function still works perfectly - just the bake does not work.

Is this a sign the DSI needs to be replaced or could it still be problem with the gas valve or elsewhere? I had settled on the DSI replacement until i found the decision flow chart at the end of the Whirlpool Job Aid which suggests that ignition followed by a flame out without ongoing sparking means the gas valve should be replaced.

Gene, i really appreciate the time you took to answer my question. I saw the other link before posting, but thought maybe it wasn't applicable. What puzzles me is that it has worked perfectly for five years. Could it possibly be the burner after all this time? That's what led me to think there was some other failure.