Quote:
Originally Posted by Nine8Six
How do you ensure its within the mV rated range? Fluid sensors needs a pretty sharp resolution to function to specs, no? Was under the impression only a computer was geared for this sort of accuracy. Mind you if one have a industrial grade multi-meter then it might be doable. Really dunno... excuse my ignorance on the subject, never done it. Interesting stuff
Warning: requires 10 mega-ohms independence multi-meter on Porsche cars (and Prius). To prevent drawing too much current and damaging the other end, something like that 
Porsche are complex things! Love it tough... |
You won't get "accurate" readings with just a simple voltmeter. You can however determine if it is "dead" if you get something similar to nearly no voltage that his scanner is reading. It is a little easier to do on the secondary o2 as it's voltage should be much steadier than the fronts. If you have a fancy meter or a scope or even a high low min/max meter that is a little better. All the reading should be done after the car is warmed up, the heater circuit can malfunction on the o2 and cause problems as well.