A few months ago, my check engine light popped on, and started spitting a 420 code, and later a 430 code. According to my scanner, it means something might be up with the left and right bank catalytic converters.
I haven't noticed any actual change in the vehicle's performance, engine behavior...
P0153 P0430 Assistance please ***REPAIRED - SEE LAST POST***
I have an 08 Commander 5.7L with a P0153 and occasional P0430 code.
One code or both codes will come on after about 30 minutes of driving.
Milage is 97000, outside of any warranty.
I replaced Bank 2 Sensor 1 O2...