I am not a mechanic by no means but have been working on vehicles for the past 30 years repairing what I can. This is my first time owning a scan tool that can read live data. I have a Launch 129e scan tool.Mike...Welcome to ClubFrontier. Judging from your Registry & posts, it looks like you just joined. Is this your first Frontier? Are you mechanically inclined or a novice when it comes to diagnostics & repairs? Tell us a little about yourself & your scan tool. There are many different kinds available on the market - some very simple that can read & display Vehicle Diagnostic Codes to the complex expensive-as-hell, (depending on your income), multi-directional tools that can "talk" to your car & can test / display all kinds of crazy information from your car. Depending on your model year Frontier, you should be able to find & download a Factory Service Manual here from CF, (use the Search Function), or from the Internet. A Factory Service Manual should be able to provide the "readings" & test proceduces for all the different sensors on your truck.
Are you using your scan tool just to learn about your Frontier or are you trying to troubleshoot / repair an issue on your Frontier now??? Any info you can provide would be greatly appreciated.
Hope to hear back from you soon.