Your wideband readings look normal for idle.

 

I thought it was jumping around a whole lot? What about all of the codes and the SES light though?

Trust me, i'd love for it to not be an o2 issue.

 

Wideband readings always jump around a bunch during idle, I've found as long as it's in the 14's or 15's to be normal.

I'm honestly too new to the X ECU to fully understand all the codes. Are you sure the codes are front o2 related? Have you completely disabled the rear o2 within ECUFlash?

 

Tephra already said that his ECU code says that he is using the Rear o2 sensor for Closed Loop. So that is why his AFR at idle looks fine. But it doesn't mean that his front o2 sensor is ok.

 

I consider 13-16 to be fine on my car during cruise or idle (on my PLX gauge). If you were touching 18 (like I currently am) then you could be alarmed.

The front and rear o2 sensors are the same part. Feel free to swap them. I bought a new aftermarket one for my front o2. Another option is to do the disable on your rear o2 (assuming you have a wideband that you can wire into that ECU input) and then swap the rear to the front. There are some posts on how to accomplish that on this site.

 

Note that I once had P2195 from having the front o2 sensor out of the car while driving (replaced temporarily with a wideband). However, once I reset the code, it didn't come back. It would seem that the code is caused by the ECU seeing unexpected readings from the front o2. In my case, it was reading open air, not exhaust.

 

could someone give me a link... or just some info on which o2 to get if I need to do so?

 

Ok something I find quite strange... I unplugged the o2 from the car (the electric part didn't take it out of the exhaust) and oddly enough it ran better! I didn't get an idle issue. Now the car was running in the high 12's to low to mid 13 AFR, but it didn't have an idle issue.

Does this tell anyone anything about the o2 definitely being the problem?

 

swap the front02 and rear02

that will give you a good idea of whats wrong.

If the fault stays the same then you have wiring/ECU problems. If the fault moves to the rear02 then you know its the 02 sensor...

 

can I get rid of the rear o2 trouble codes?

 

lets do one thing at a time

you NEED a front02...

 

ahhh f$#@ i'm going to swap'em then... I swear if it doesn't work I am gonna be so pissed i'll beat both of those sensors with a sledgehammer.

 

ok

 

lol, I like your calm response . I actually don't have an o2 socket, so I will have to call my friend and ask him to bring it home from work and do it on Wednesday because tomorrow is my B-DAY!!!! I'm going to eat all kinds of junk and ruin the 1300 crunches I did tonight

 

Would this 02 sensor work? http://www.autopartswarehouse.com/sk...%26+Drivetrain