Son has a 2012 Civic w/ 140K miles that won't start. Just put in a new battery. All lights and interior dash lights are fine. I hear a noticeable single click under the hood from the starter when turning the key. I can't tap on the starter since I can't see it. It's not accessible from the top and there is a splash shield on the bottom that would need to be removed. Any other things to check? I put a code reader on it, and nothing pops up.