Please take the time to read possible causes, do inspect and check all the free or low cost things first prior to throwing parts and your hard earned money at it!


It could still be a loose wire , a dirty MAF sensor, I just read the probable causes in the link you posted

 

You don't have a Bank #2. Unless you have installed a V6.

http://www.obd-codes.com/p2196

I guess we are all typing at the same time!

I would
1. inspect the wires at the sensor
2. check the fuse (i know there is one)
3. check all of the harness for chafing/burning/damage
4. Check fuel pressure
5. check MAF
6. replace #1 O2 sensor