Nov 22, 2022 - 06:19 PM
P0430 is a code for Catalyst System Efficiency Below Threshold (Bank 2). A faulty catalytic converter could be the culprit. Best to check the oxygen sensor (downstream) as well and replace it if it's gone bad. See, a bad sensor could give a false reading even if you've already replaced your catalytic converter. For more details, click here. It's an article on our blog that can help you understand the trouble code more. You can also check with your trusted mechanic to be sure you've got everything covered.
Parts Specialist>>> Right Parts, Right Now at CarParts.com