Seems to be a problem with my B2 02 sensor, what do I do from here?

[osuhog]

I've been running OLSD because I haven't been able to get CL to run as well as OL. I re-enabled CL & ran a scan tonight to see what I could tell. Any opinions on what my B2 02 sensor is doing here? It seems to be flat-lining a lot. I tried another sensor & it didn't make any difference.

MAF & VE are tuned very well.

The first pic is at idle, 2nd pic is in park with me holding it at about 1700 RPM's. I also included the log file & cfg if anybody wants to see.

What do I check next, or where should I go from here to try to keep a solid running CL tune.

Any help would be greatly appreciated!

[mrfister77]

Are you sure you don't have a leak in front of the sensor?

[osuhog]

That was my first thought, but I sure don't think so. If there's a leak somewhere, it isn't making a peep.

I just had an idea though. My wideband is on the drivers side, installed right behind the B1 narrow band 02 sensor. If I don't get this figured out, I think I'll extend the pass side narrow band 02 sensor over to the wideband bung on the drivers side & see what it does. Any danger in running it that way if it works?

I'll keep this thread updated.

[mrfister77]

That's a good Q. I wouldn't have thought of doing that. Genius way of tracking your problem down though.

[JoeyJoeJoe]

You could run OL that way, but in CL it will be making B2 fueling adjustments based on B1 conditions. Swap the sensors with each other, put B1 in B2 and vice versa, if the problem follows the sensor, the sensor is the problem, if it stays on the same side it is wiring, or mechanical on that side.

[osuhog]

Thanks guys, I actually tried a THIRD sensor on B2 this morning & it seems to be good now. At least it is so far. I'll re-scan it over the next few days & make sure all is still well.

Thanks again!