I had these results today. No check engine light on.

I understand they are O2 sensors but which ones??

Did a bit of research but nothing relevant popped up

 

You would be better off checking your fuel trims. The mistake most people make is changing the o2s when they do what they are supposed to do by telling you something is wrong.

 

Will give it a shot, thanks!

 

I don't see any actual codes so its hard to tell.

Generally you check the voltage on the O2 to tell if they are working or not. I've nvr done this and am not sure what all you need to look for. I think if the voltage stays mostly the same its good, but if its sporatic its bad....something like that.

But like the guy above said, fuel trim help narrow things down to one side or the other. If its both sides its more than likely above the heads...so throttle body, intake, or something.

 

I'll do just that. I'm just toying around the scan toy. As soon as temperatures get more reasonable (I work in god's garage), I'll get on the ground cleaning, vacuum checking, manual sensor reading and minor tupe-up stuff before going any further into scans and all those. Was just curious.

The scan toy was cool because it immediatly found my TPS was bad. For the rest, sensors can say whatever they want if basics are not good. My truck used to do around 14-15l/100km. Got up to 18 with the bad TPS. Now I'll fill up and wait!

 

Had these results today. Screenshotted after 30km ride, idling. Looks ok?

Only thing that bugs me is the tank pressure reading. Looks way off. EVAP?

 

In the perfect world, ideally you want long term fuel trims to be 0%, but I've nvr seen that with my personal vehicles and just gave up. It's "acceptable" to be up to like 8-9% and after that it throws a code.

So, yours are in pretty good shape. When you start seeing 17-25% you prob have a vacuum leak somewhere.

 

The tank pressure on our trucks seems like a bug in the program. Mine reads off the charts too. Your fuel trims dont seem far enough off to be setting any codes though. Ill take a look at your voltages and see how they compare with mine when the rain stops.

 

Thanks guys!