Air/fuel Ratio Sensor (bank 1 Sensor)

[RX in NC]

I learned from a Lexus support manager this afternoon that our trouble codes of P01130 and P01135 both point to the "Air/Fuel Ratio Sensor", also called the "Bank 1 Sensor".

Anyone know where this particular sensor is located, what it looks like, and how you get to it? The Lexus support manager could research and crosscheck my trouble codes but she's not familiar with the differences among the various sensors on Lexus vehicles.

Thanks for your assistance.

[wwest]

Not familiar......

Shouldn't be in that position then.

Oxygen sensor mounted in the exhaust downstream of the engine but before the catalytic converter.