codes coming up..lean condition??help plz

[stang_me1990]

hey there..i am getting codes p0155 and p1151..what side is bank 2 on? i've replaced the passanger side upstream o2 but it still says that i have a lean condition..wondering if anyone else has had these codes come up and how they got them to go away..thanks for any help, mike

 

[PiranhaGT]

I was told that Bank 2 is the drivers side. Do you have an off-road pipe?

 

[stang_me1990]

yea i have long tubes, o/r h-pipe and cat back..we cleared the codes and i drove back to my house(about 15 minutes) then the light came back on..i'm not sure what could be causing the lean condition..i didnt know if it could be a leaky intake gasket or what the hell..but any suggestions would be great..thanks, mike

 

[stang_me1990]

anyone else with these codes?