p1176 b1 limt attained???

i got a code p1176 o2 correction behind catalyst b1 limit attained. anybody know what that means or what did you do to fix...i am going nuts from one code to the other it never stops....i love the car thou i had a 5 series b4 ...thanx

Sounds like your o2 sensor behind the catalytic convertor on Bank1 needs to be replaced.