I have a Whirlpool Gas oven and range top and recently the bake function has been working intermittently. Sometimes the oven will heat up normally with the bake function but in most instances when the bake function is initiated, the oven just sits at “100” degrees according to the display and the igniter does not turn on. When I check the igniter it does not appear to be pulling any power at least not for a while at the beginning. Eventually (sometimes after 30 minutes-an hour) the oven will eventually turn on and start to heat up but it takes a very long abnormal amount of time.

However, when I hit the broil function, the same igniter lights up as expected and lights the gas.

Any tips on diagnosing if this is the igniter vs the temperature sensor vs something else?