DTC P0420: Low Catalyst Efficiency Bank 1, Or DTC P0430: Low Catalyst Efficiency Bank 2: Notes

WARNING: This page is about a different car, the 2000 Isuzu VehiCROSS, 2000 Isuzu Trooper, 2000 Isuzu Rodeo, 2000 Isuzu Amigo, and 2000 Honda Passport. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Bank 1 refers to right cylinder bank. Bank 2 refers to left cylinder bank.