this is for mitsubishi eclipse 1998 2.0 16 valves the code is p0420 Catalyst Efficiency Below Threshold (Bank 1) what i have to buy to fix my car? #4 - miguel - 06/10/2009 - 21:38p0420 i have a saab 95t 2000, i have replaced the 2 02 sensors but i am still getting the sam...