What do u mean by taking time, checking carefully and yada yada yada?
When you scan a vehicle, all you do is plugin the device, check for information/error codes. That's it. You don't need to go thru all the 1s and 0s in the cache carefully or take time to do that.
Just get a OBDII device yourself and a good scanning software. Once you get the output of the software, do a google search. U will find lots of info. That's what I do. I just use a cheap OBDII device, dozens of software and lil bit of googling skills.