2002 Suzuki grand vitara engine code P0430

Question

Cat efficiency below threshold (bank 2) I have recently replaced one catalytic converter could this fault be sparkplugs needing replaced. I have Cleared 3 out of 4 codes, this is last one thank you. The other codes were P0128 P0505 P0305. Replaced thermostat. Thak you

Answer 1

P0430 Catalyst system below threshold

Lack of proper maintance such as tune up can surely make a catlytic convertor work much harder, A proper tuned engine is essential for the longevitey of the catalyic convertor, What where the other codes that also has been set? The purpose of the CK ENG LT is to protect the catalyic convertor with the other code condition it can be pin pointed as for why P0430 is coding.