Data logging graphs - Whats going on??

[flyboy]

Got me some new software it looks great but is causing me some confusion.

 

Can anyone explain what's happening here.

Totally out of my depth.

To me it looks like the 2 sensors are wired the opposite way round.

When bank 2 is oscillating ( in closed loop?) bank 1 is high.

Then when bank 2 is low ( in open loop?), bank 1 is oscillating.

 

 

[Tricky-Ricky]

Looks rather odd to me too, are they 2V wide-band sensors? the voltage range only reaches 1V? what software is it and is it configured correctly?

[flyboy]

They are Std nissan sensors which are wideband before the cat.

Software is just the pro version of OBD Car Doctor which allows recording of the data

 

They should be oscillating around the 0.45v mark crossing and uncrossing as they are when in closed loop.

 

Its just they should be doing it together

 

Graph 1

Bank 2, Sensor 2V

Min value 0,01 V

Max value 0,93 V

Average value0,44 V

 

Bank 1, Sensor 2V

Min value 0 V

Max value 0,93 V

Average value0,66 V

 

Graph 2

 

Bank 2, Sensor 2V

Min value 0,01 V

Max value 0,92 V

Average value 0,19 V

 

Bank 1, Sensor 2V

Min value 0 V

Max value 0,92 V

Average value 0,4 V

 

Minimum and maximum values are fine just not at the right times ?

Edited February 22, 2015 by flyboy

[Tricky-Ricky]

Not seen lambda logging like that from mine, been having a look to see if I can find any old logs, I did have both ECU data-scan std lambda and Innovate wide-band logs, if I find them I will post them up.

[flyboy]

Think the software is shot

I passed the mot by fixing a small exhaust leak which was throwing the mot sniffer off.