Check engine light on, bunch of codes. what do you guys think?

[Seneca]

My cars been running great, however while at idle my cars been throwing codes, in the order as fallows..
PO133 O2 circuit slow response, bank 1 sensor 1
PO153 O2 Circuit slow response, bank 2 sensor 1
P2195 O2 sensor signal stuck lean-bank 1 sensor 1
P2197 O2 sensor signal stuck lean-bank 2 sensor 1
PO174 system to lean bank 2

This does not seem to effect drivabilty at all. Is it possible for a small exhaust leak (header to Converter) to cause this? There is a very small leak where the headers connect to the converter on the pass side. If i clear the codes, I can sometimes drive as many as 300 miles before it'll come on again. always seems to be at idle. What do you guys think?? thanks.

[sailsmen]

Appears to be the O2 sensors.

[MOTOWN]

Has it effected your gas milage at all?

[SpartaPerformance]

Looks like you may have a leak on the intake side like a vacuum hose.

[LANDY]

It could come from your exhaust leak.
Also the fact that you have LT headers can confuse the 02 sensors, nothing a tuner can't fix tho.

[05crownsport]

Use a spray bottle to mist water near any suspect vacuum lines and listen for idle change to find vacuum leak. If not that, it's gotta be an exhaust leak sucking in fresh air upstream of the 02 sensor. Good luck with it Seneca, and have a happy fathers day!

[Seneca]

thanks for the replies and input guys. Fuel milage is still the same between 15/19 mpg depending on habbits. I did replace the 2 upstream (closest to engine) sensors about 3 months ago. So maybe it is the tune. I will have it retuned soon when i get my torque converter in. Thanks a bunch.. I will check for vac. leaks, Seems like there should be a little surge with a vac leak though? None the less i will check tomorrow.