first clean the O2 sensor, is the first sensor at the exhaust, is locate in front at the middle its have 4 o 3 cables i don't remember... i cant post links sorry...

 

Thanks Pollo. I can see one O2 sensor very easily, right at the front of the engine, above the cat, under the valve cover. This one has 5 wires. Is the bad sensor behind the engine somewhere? I haven't had a chance to look back there yet. If you have a diagram or pic, you can email me at myhotrs@gmail.com

 

Do you have the v6 or i4? I am on my phone and can't view it. Something is wrong with my app. I'm pretty positive that you have the v6, if so then there is another one on the opposite side between the motor and the firewall. I am not sure on which sensor you are getting the code from. There is also another o2 sensor under the car, I am not mistake.

 

Bank 2 is in front

Bank 1 is the firewall side of the engine and Bank. 2 is the front of the engine. There are four sensors on the V6 and three catalytic convertors. I believe the sensor in question is the one you can see right in front at the top of the catalytic convertor.