I need some guidance.

So I've had this car for 7 months now. Ran without any issues until recently. I started getting a P2240 code. ONE time I also got a code for air/fuel ratio....but 99% of the time I only get this 02 circuit bank 2, sensor 1 code.

I cleared the code twice, both times it came back quickly when driving the car.

I removed the Steeda CAI and put the stock CAI back on, and loaded the stock tune back to the car. No change. I still get the P2240 code.

I replaced both...

Constant P2240 code