Thanks guys, it looks like I need to repair both the Bank 1 Sensor 1 and Bank 1 Sensor 2 OS Sensors. Is the B1S1 the upstream (left or Right) and the B1S2 the downstream (left or right)? I am looking to buy parts so my mechanic can install them so I want to make sure I buy the correct ones.
Any help with what parts to buy is great appreciated.
The error codes I have now are P2195 and P0138