01 civic has me stumped. Won't start

What is your question?

Car stalled out so we took it to the shop. Cam sensor was replaced. Did ok for a few weeks and the other night it stalled and will not start back. Has new fuel pump and filter, cam sensor, crank sensor, tps sensor and is no longer throwing codes. Has fuel and pressure and injectors are working. Any ideas or suggestions as to what it could be?