Yes, this sounds like the low level sensor has turned the system off. If you unplug the low level sensor at the pump harness relay, right near the pump it should clear the problem on a ignition cycle. If it does, we need to see why you level sensor has an issue. As Richard said, any magnet type interference can cause this. I have seen this before, if the pump motor is very close to the low level probe it can cause an issue, but a big bass speaker or anything can do this.

Let us know what you find.