2002 Nissan pathfinder p0420 Cause of P0420 on 2002 Pathfinder - Nissan Forum Sep 17, 2013 · I've had P0420 on and off the last couple of months, indicating an inefficient catalytic converter on Bank 1 (passenger side).... Source Source Source Source Source Source Source Source Source Source Read Also: 2002 Nissan pathfinder catalytic converter bank 1 P0420 catalyst system efficiency below threshold bank 1 nissan sentra 2005 Nissan pathfinder catalytic converter bank 1 Bank 1 catalytic converter nissan murano Nissan p0420 bank 1 Nissan p0420 murano
