P2195 and p2196 codes popped up recently on 2003 Explorer 4.0

Look at volts or millivolts

2003 Explorer 4.0L

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Look at volts or millivolts

Ok, I'll try to explain what I'm seeing here.

First, the definition for P2195 isn't exactly how it sounds, and not really what that picture you posted says.

Ford says, "Description
A HEGO sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time. "

FYI, HEGO is Ford language for an O2 sensor.

Read that description closely. It doesn't say the engine is running lean. It says an O2 is indicating lean because it's trying to correct an overly RICH condition.

You could also say the engine is running rich because one of the sensors is stuck or biased lean.

In other words, you may a sensor that is lying to you.

I need to go back and look at some of your first pictures.

Ok, go back and look at the third picture you posted. From what you've given us, that's the one with the most evidence.

Look at your short term fuel trim, it's at 42%. So the PCM is trying to add fuel, but look at your bank 1 sensor 2 O2. It's almost maxed out, it's over 950mv. These two things don't agree. If you are already the rich, why is the PCM adding fuel?

From what you've given us, I'd say that you PROBABLY have a bad bank 1 O2 sensor. This is hard to say from snapshots of data. Longer amounts of graphed out data would be better, but I don't know how capable your scan tool is of this.

You can see in the picture that the b1s1 O2 is at 365mv. Again, this is just one moment of time, so it's impossible to say, but like someone mentioned earlier, it seems like the B1S1 O2 was never going very high.

Let me know if you have questions. I can try to explain better if you are struggling to understand what I'm trying to say

Ok so boy s1b1 o2 sensor upstream?
I changed fuel filter today still jerking.

From what I could see in your data, that is what it looked like.

Like I said, graphed data over time is better than data that is just a split second in time.

Can you graph your o2 data for all 4 sensors when the problem is happening?

Do you know if you can graph the 4 of them at the same time?

Bought o2 sensor tonight based on code and had duel filter changed today.

Not sure but I think I can at least 2 at a time.

Did you change the sensor yet?

2 at a time is okay, all 4 would be better, but we can make that work.

Take the vehicle out, preferably when it's doing the problem. Graph both pre-cat O2's while flooring the vehicle, let it go to redline and through a shift if you can.

Do this on the road, under a load. Don't just snap the throttle in your driveway.

By the way, I didn't mean change 2 sensors or 4. I meant graph 4 sensors or 2.

I changed b1s1 o2 sensor today. I have better acceleration but still feels like bucking n jerking.
Yesterday fuel filter was changed. And I was advised to clean throttle body again with B12 which I did and it triggered a code. (P0102)

Then I let it idle then would rev up

Fuel trims

When p2195 was triggered

When p2195 was triggered. (2)

So, after you changed the sensor, you cleared the codes and the P2195 still came back?

Also, on the bucking and jerking, I don't remember that from the original post. Do you know where to find Mode 6 data in your scan tool? It sounds like you're dealing with a misfire as far as that is concerned?

No when I sprayed B12 into throttle body I got a map or maf code.
I changed my oil just now.
It's been bucking or jerking and o2 sensor could cause that too based on Google. I was going to ask about wires tonight if it would trigger a misfire code. Acceleration seems to be better with fuel filter and 1 new o2 sensor. I changed wires and plugs last year but maybe the autozone wire has an issue. Plug wides have a warranty.
I may change the other upstream o2 sensor later and plugs n wires again. I took live data video today driving.
I fieled yesterday and today and was showing 8mpg average.
I believe some of my fuel trims are negative.

I don't think you need to go changing the other upstream O2 sensor. The fuel trims the you've posted lately look pretty good. A decent range is 0, +/-10%, and you were right there from what I've seen.

Can you check to see if your scanner has the option of looking at something called mode$06 data? It can help you identify which cylinder is misfiring.