04 Mustang GT troble codes

[pge27]

Just got my tuner and loaded the tune. Drove the car one day and now I have codes P2270 and P2272. Too lean conditions. I was under the impression that the tune would shut off to rear o2 sensors. Any ideas?? Are the sensors bad. Running slp longtubes with offroad xpipe.

[mikel]

Lean is different than O2s being off.
This code sounds like the O2s are stuck in the lean position, maybe there is a ground issue?
Did you recently have exhaust work done on the car?

[pge27]

I pulled the codes today. No exhaust work has been done recently. Codes are:
P0138 o2 circuit high voltage bank 1 sensor 2.
P2270 o2 sensor signal stuck lean bank 1 sensor 2.
P2272 o2 sensor stuck lean bank 2 sensor 2.
I'm not sure as to what I can do to correct this issue. Thanks

[mikel]

Looks like you have some bad O2 sensors, not sure what caused it though.

[pge27]

Just to be clear, the canned tune would take care of rear o2sensors with an offroad midpipe. Is that correct?