Technical Car scanner app

[andyk0001]

I am trying to understand the Oxygen sensor readings on my 2021 Fiat Ducato 2.3 Facelift engine using the Car Scanner app.I am getting variable readings from 3 up to 4.7.
Anyone help.
Thanks

 

[theoneandonly]

The graph is from data collected by Multiecuscan. It starts from startup so sensors dont start up imedeately this is normal

not odball. The value will never exceed 21% ratio of oxygen in air.
the next is more normal running. Where O2 values dip to zero the O2 is consummed and soot could be generated/ deposited.

So you see the O2 can vary a lot. your values are they voltage?
just checked all my data i have not calibrated the Oxygen sensors so cant help there.
Ps its a 2017 twin egr 2.3 130 Ducato

 

[andyK1000]

The graph is from data collected by Multiecuscan. It starts from startup so sensors dont start up imedeately this is normalView attachment 428072 not odball. The value will never exceed 21% ratio of oxygen in air.
the next is more normal running. Where O2 values dip to zero the O2 is consummed and soot could be generated/ deposited.
View attachment 428073

So you see the O2 can vary a lot. your values are they voltage?
just checked all my data i have not calibrated the Oxygen sensors so cant help there.
Ps its a 2017 twin egr 2.3 130 Ducato

Thank you. Very useful info.