i have a engine code po. 430 on a 2005 volvo xc90 i cant find out what it means

Question

engine code p0430 on 2005 volvo xc90

Answer 1

P0430 Catalytst system effieciency below threshold (bank 2)

This is a cataytic convertor code where is no longer has the capability of controlling emission outlet. Being lean it can no longer utilize oxygen to convert harmful emmission into the atmosphere