I have hfc's from ARK. They installed them the day after christmas
and had the 0420 and 0430 codes pop up. I installed the brass bung extensions from z1 motorsports. None of the wires were pinched or twisted to the point of damaging them. The 420 and 430 codes cambe back and Then I installed the G3's. Im kinda lost as far as why this is popping up.