In a scan software graph, Bank 2,1 o2 pulses 3 times for one pulse of bank 1, 1 which takes 8 seconds

have codes in P0xxx format?

How would you even know that? Your code read can't display at the actual switching speed. It would have to be graphed out with a professional scan tool.

Hi , Sorry for not being more clear. I am using Pcmscan, a software on my laptop along with a ELM tool that plugs in to the DLC connector. The car is a 1996 Toyota Avalon V6.
I graphed over 1 minute all PID's my car uses. The O2 bank 1 Sensor 1 has one cycle(peak) in 8 seconds. The O2 bank 2 sensor 1 has three cycles(peaks) in 8 seconds. I can set the software to see only these two PID's when recording. I will do this asap.I was just hoping someone could help me understand this. Thanks.

It's not really that slow. I don't think the software is updating quickly enough.

Thanks WrenchTech. I will scan with just 2 pids. I just discovered the O2 I had put in was the wrong part number 13354 Bosch. Tomorrow I will get the right part 13355 Bosch and put in. And then scan.Attached is the Graph of the problem I had before the change. Thanks.

Hi, here's a graph where the two sensors, Bank 1,1 and Bank 2,1 are almost pulsing the same for about 5 seconds. Using only two PID's when scanned.

Why is this even an issue. Is it setting any codes?

Quote:Why is this even an issue. Is it setting any codes?
No codes are setting. I noticed the LTFT for Bank 2 Sensor 1 was at +12% and was wanting to lower it. I am afraid it will cause the O2 to fail like the one I replaced. Thanks

I had gotten the wrong O2 sensor from Autozone installed. The difference was the length of the wires. So I switched it. I plan to attack the +12% Long term fuel trim next week actually. A few months late.

That is not going to cause the 0/2 to fail. All that is telling you is that the engine has a slight lean condition and the computer has compensated for it.

Thankyou, that's a relief.