What could cause a vehicle to not start intermediately?

Hello, This could be one of many issues, and you will likely need the vehicle scan tested to help identify where diagnosis should begin. Unfortunately, intermittent issues can be difficult to diagnose, even for a skilled technician. Before taking it in for service, check the fuel pump relay when it will not start next time. If it is not clicking on sometimes, you have your symptoms identified. If you have a check engine light on, diagnose this first.