I’ve had a company car for the last month or so, and I’ll have to return it soon. But it’s having some engine trouble (totally not my fault—I think), so I surreptitiously called a repair shop in order to get a quote on a below-the-radar repair. The mechanic asked where the OBD port was, and I sat there, silent and dumbfounded. I didn’t know what he was talking about. “Nevermind”, he said after an awkward pause, “just bring the car in and I’ll find it”. That was easy. But I am curious—where is the OBD port on a 2019 Nissan Sentra?

My brother’s driven the same Toyota Corolla since the early 1990s—somehow this thing is still on the road. He thinks there’s a problem with the engine, so I told him to plug an OBD scan tool into the OBD-II port to figure out what the issue is. Where is the OBD port in a 1993 Toyota Corolla?

I’m trying to help a friend out with troubleshooting what’s wrong with his ‘93 Civic. I told him to hook up a scan tool to scan for trouble codes, but he looked at me like I was speaking gibberish. Anyways, help me help him—where is the OBD port in a 1993 Honda Civic?