P0137 Toyota -

Question

Is the P0136O2 Sensor Circuit Malfunction (Bank 1 Sensor 2) or the P0137O2 Sensor Circuit Malfunction (Bank 1 Sensor 2) is this the right or left side?
I got both of these readings when testing the car 2011 Toyota Camry and was going to do the repair myself.

Answer 1

if the car is under warranty the dealer will fix the issue for free.

what is the engine size?

Bank 1 sensor 2 for a 4 cyclinder engine, see location below.