tar bara någon sek att googla fram svaret på din fråga...
P1176, 02 Correction Behind Catalyst, B1 Limit Attained>
1. second oxygen sensor(after catalyst)damaged -check also first oxygen sensor(before catalyst)
or/and
2. Leak in the air intake system(false air).
V70N 2.5T -05
V70XC 2.4T -01