PO138 - Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2)
This is a drawing from the Toyota parts computer which shows two sensors:
![Image](http://i1222.photobucket.com/albums/dd482/col01/__Drawing-2.jpg)
I have a idea on which one it is but would just like it confirmed so I do not buy the wrong one, as they cost $330 unless someone can tell me a cheaper place to get them.
This picture shows the error:
![Image](http://i1222.photobucket.com/albums/dd482/col01/_ErrorScanTool.jpg)
This is Page 1 and I suppose everything is all right here:
![Image](http://i1222.photobucket.com/albums/dd482/col01/01ScanTool.jpg)
Page 2 - I suppose everything is all right:
![Image](http://i1222.photobucket.com/albums/dd482/col01/02ScanTool.jpg)
Page 3 - THIS MIGHT BE AN ERROR:
![Image](http://i1222.photobucket.com/albums/dd482/col01/03ScanTool.jpg)
Page 4 - Looks all right?
![Image](http://i1222.photobucket.com/albums/dd482/col01/04ScanTool.jpg)
Page 7 - Looks all right:
![Image](http://i1222.photobucket.com/albums/dd482/col01/07ScanTool.jpg)
There is nothing much on the pages I have missed.
These are photos from ScanTool:
![Image](http://i1222.photobucket.com/albums/dd482/col01/20EasyOBD2.jpg)
THIS LOOKS LIKE A PROBLEM!
![Image](http://i1222.photobucket.com/albums/dd482/col01/21EasyOBD2.jpg)
Not sure if this is all right:
![Image](http://i1222.photobucket.com/albums/dd482/col01/23EasyOBD2.jpg)
I wonder if anyone can advise which sensor to replace from the Toyota Drawing above? It seems simple to me but I might be wrong.