OBD O2 Sensor 1 question (1 Viewer)

[ToyotaTrk]

Maybe this should go in the OBD thread?? But ive had the app for a little while now hoping it would tell me why my auto self leveling check on start up stopped working - but I see no codes related to that. But I did notice today that O2 Sensor 1 is 0.00

A little tool in the hands of a beginner is dangerous.

What does that mean , if anything? How many sensors are there?

What to do?

Sorry if all this is too beginner - but , im a beginner. Tks!!

 

[grinchy]

There are four total sensors. 2 for each bank of four cylinders.
There is an air/ fuel before the first cat, and an o2 after each cat.
You can see them all easily if you look up at the exhaust piping from behind the front tires

 

[ToyotaTrk]

There are four total sensors. 2 for each bank of four cylinders.
There is an air/ fuel before the first cat, and an o2 after each cat.
You can see them all easily if you look up at the exhaust piping from behind the front tires

Ok. Thanks. For some reason only 2 showing on app and then only 1 is registering!?!