Lightning bolt warning light turned on (throttle body)?

Hello, I'm trying to help a friend out. The lightning bolt came on in their van. I know this could be indicative of something with throttle body, but also it could just need a relearn. I haven’t gotten a chance to read their code yet but seeing what’s first steps one would take. I did get it to turn over and stay on once, then next couple times it would want to turn but then shut right off. They got it to a shop (Steve Shannon which is more so a tire/brake shop) by jumping it, but they said the battery tested fine. And once I jumped it drove fine.