Laguna_S2K

Hey Everybody, my car has a CEL on and it's throwing code P0141. I know this is for the voltage being off in the heater element of Bank 1 Sensor 2. The problem I am having is I am reading some places that it says to replace Sensor 1 to fix this problem not Sensor 2. Can anybody confirm if this is true or maybe just multiple places have a typo in which sensor should be replaced. I have already reset the ECU and the code is still present. The car is running fine although does seem to burn alittle bit extra fuel which I have read is normal for this particular CEL code. I have a 2006 with 68,000 miles, only mod is an Injen cold air intake that was on the car before I even bought it with 48,000 miles on it. Please help I dont want to order and replace the wrong O2 sensor here.

Thanks for your time
Jeremy