I was wondering if anyone can tell me exactly how much of a pain it is to change the bank 1 sensor 3 on my 2005 camry pzev 2azfe

 

Its on the exhaust pipe behind the converter that's under the car chassis.

Need to get under the car to access sensor. Most likely hardest part.

Need a special sensor socket (available at auto parts stores) and breaker bar or a box wrench.

Disconnect sensor wiring plug.

Unscrew sensor. It could be frozen and need some effort. Here is where the long breaker bar comes in.

Use only special thread lube on new sensor threads hat typically comes with the new sensor.

Tighten to 33 ft-lbs.

 

Someone told me the plug runs into the car under the seat is that true?

 

Somewhere under the car.

To disconnect requires getting under the car.