OBD code p0161

2002 Toyota Rav4 with the code P0161 

P0161: O2 Sensor Heater Circuit Malfunction (Bank #2 Sensor #2)

Its telling to inspect and replace O2 sensor bank 2 sensor 2.

The sensor is located to the bottom right of catalytic converter on passenger side.

22mm oxygen sensor socket wrench required to remove the sensor out from its area.

its located infront, under the passenger seat, just after the CAT, 

As your looking at the exhaust manifold, Bank2 sensor2 is located beneath the converter on the left side.

See the diagram shown below:----

These details will help.

Thanks.

Ford Focus Heated Oxygen (HO2S) Sensor?

http://fordrepairhelp.blogspot.in/2012/03/ford-focus-heated-oxygen-ho2s-sensor.html

Testing Ford Focus Heated Oxygen Sensor?

http://fordrepairhelp.blogspot.in/2012/03/testing-ford-focus-heated-oxygen-sensor.html

Now Voltage at O2 sensor on 1996 Toyota Land Cruiser?

http://repairhelpcenter.blogspot.com/2012/01/now-voltage-at-o2-sensor-on-1996-toyota.html

O2 sensor location for ford freestar?

http://technoanswers.blogspot.in/2012/02/o2-sensor-location-for-ford-freestar.html

HO2S and Catalyst Monitor Sensors working procedure?

http://technoanswers.blogspot.in/2012/02/ho2s-and-catalyst-monitor-sensors.html

1995 Oldsmobile Eighty Eight has bad O2 Sensor?

http://schematicsdiagram.blogspot.com/2011/12/1995-oldsmobile-eighty-eight-has-bad-o2.html

Replacing O2 Sensor For OBD Code P0420?

http://schematicsdiagram.blogspot.in/2012/04/replacing-o2-sensor-for-obd-code-p0420.html