Check engine light--code indicates, catalyst system right bank underperformance?

I might would agree with you about the mileage, but this is a Volvo, it goes about 300,000 miles before you have problems with it. As i said it has had regular maitenence and required maitenence at times stipulated by Volvo. Also if the cataltic converter is done as you say the OBD-2 system would recognize this and the check engine light would stay on constantly. Repectfully I'll have to disagree with you on your answer, but thanks for trying.

DISAGREE ALL YOU WANT TO BUT WEATHER ITS A VOLVO OR NOT PARTS WERE OUT AND FACTS ARE FACTS. 185K MILES WILL WEAR OUT THE BEST PARTS IN THE WORLD. GOOD LUCK YOU APPARENTLY BELIEVE IN VOLVOS MORE THAN I DO. LOL