Ok fellow maxima.org members. I have read a few posts on this problem but I'm still unclear on which sensor is Bank 1. I know they are located on the battery side of my 2003 Maxima(auto trans) and both have the green connectors for plugs. Which one is bank 1? The one close to the front of the car is the angled plug and the one in the back is the straight plug but which one is bank 1? Please help me out cause i gotta change it out soon. Thanks

 

Bank one is the bank with cylinder one.



The rear bank, at the firewall.