Road trip down the interstate and my Service Light Comes on, so i pull off, check the gas cap, pop the hood. nothing strange. I keep driving and mileage is fine (replaced all 4 O2 sensors a few monthes ago) and the engine wasn't overheating or making any noises. Get to where I'm going and swing into Advanced Auto parts to use their scanner and it's not powering on. They said it was a fuse issue that may be triggering the SES light and not letting them run diagnostics. the user manual doesn't show anything obvious, so i call the local Dealership and the guy says he's never heard of a fuse not letting them diagnostics on a car. I'm thinking it could be user error on Advance's part, but going to check the local Autozone when i get home tonight. Anyone have to deal with this, ideas?