Re: 2006 Chrysler Crossfire at Dealer for extended warranty repairs - plus dealer gre
Just looked in the FSM and neither P0137 (generic O2 & cites all 4) nor P0153 (2/1) refer specifically to the 2/2 (2nd bank, rear) sensor. Both together would point to the front sensor & could be caused by an exhaust leak.
Take a look at the 2005 FSM (online) pages 9-161 and 9-195.
Personally I'd pull both front sensors, check for clogging, then reinstall in opposite sides and see if the error follows the sensor (153 becomes a 133) but that is me and not in the FSM.