I YouTubed some videos on trouble shooting gas ovens then downloaded the maintenance manual for our make & model. I removed the oven parts required to observe the oven igniter was not working. I checked with a two local appliance stores but they didn't have any in stock and would require two weeks to order. I found the part online for less then the local stores. I ordered the part on Friday and it arrived in the mail on Monday. Fifteen minutes later the oven was working and heating upon each again.