what is P0420 for a Suzuki - grand vitara 6cyl

Question

what is the code p-0430 and p-0420 means on a Suzuki grand vitara 3.7

Answer 1

HI there

P0420 catalyst below threshold bank 1

P0430 catalyst below threshold bank 2

These codes mean the catalytic converters aren't cleaning the exhaust as they should. It's not common for both converters to fail at the same time, but if you have a poorly running engine it is possible the converters are unable to clean the exhaust enough