Bank 2 Running lean

[ZcuatroM]

Hi guys, the SES light has been comming on, and I had my tech plug it in, and he said it was bringing up a code that says that bank 2 is running lean. He resested the code and one week later its back on, and its the same code. The car seems to run just fine. Any thoughts would be much appreciated.

[StickMon]

I used to get bank 1 and 2 lean codes during hot weather. Car always ran fine.
Finally found that some buba that had previously worked on the car pinched some O2 sensor wires where they enter through the big square grommet at the lower rear of the head cover.
They were pinched between the ///M cover and the head cover at the location shown below.

[Finnegan]

My money would be on an O2 sensor as well. Start there, then look at other options b

[ZcuatroM]

Thanks guys, both very helpful