Originally Posted By: supton
I don't have the ability to do O2 sensors live. Thought about getting a scanner but never got around to it (my Techstream is on a laptop that lacks a battery). Project for later I think, O2 sensors (quick look shows they are $90 a pop, and since I have four I think I'll approach with caution).
For $20 or less you can buy a Bluetooth OBDII on Amazon and Torque app on Google Play. It reads O2 Voltages real time if your computer on your car monitors them.