Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › How to address P0430 P0420 and high fuel › How to address P0430 P0420 and high fuel August 13, 2019 at 6:18 pm #894238 sh_ksaParticipant dose the fuel trim readings eliminate and possiblity for vacuum leak or fuel system issues? should I look for exhaust leaks?