Hi All, I have a 2015 Lexus nx200t AWD F-Sport

Recently getting check engine light come on (solid), with message AWD malfunction,
AWD disengaged and 2WD engaged. Checking the scanner shows code P0136: power train, 02 circuit malfunction(bank
1 sensor 2) on the fault log. Seems the O2 sensor is faulty. Need some help locating the bank 1 sensor 2 location with any diagrams or pics that are available? Also, if some has replaced this before, is this a DIY job or suggest take it to a shop?

Thanks

 

Refer to images posted below for locations.
The NX service manual recommends the following steps to replace the sensor:
(A) Disconnect the sensor and cable clamp
(B) Remove a section of the exhaust pipe
(C) Remove the Sensor from the pipe

I assume step (B) is necessary because there is insufficient clearance to accommodate the special sensor socket and unscrew the sensor, but I do not know if this is true. Some clever mechanics may have discovered a work-around or fabricated a special tool.

 

Edit: Drove the car for around 50 miles, check engine code is gone. All on its own. Our NX is under 60k miles, hoping the code will stay gone.

Hi op, curious if you had the issue resolved after replacing O2 sensor. Was driving today and same thing happened. Same error message, same code read from AutoZone. 2016 NX F Sport.

If you did do the replacement yourself would love to hear any tips. I've done DIY projects before but nothing on exhaust system, so going in slightly anxious.