Nissan Frontier P0430 code persists after sensor replacement, experiencing long crank, lack of power on acceleration, and power loss on Nissan Frontier

Some Nissan Frontier owners report experiencing persistent P0430 trouble codes even after replacing the O2 sensor, leading to symptoms such as long cranking, lack of power on acceleration, and overall power loss. These issues are often associated with sluggish acceleration and misfires, indicating potential problems with the catalytic converter. Owners are advised to use an OBD-II scanner to confirm the P0430 code and check for any additional codes that may reveal related issues. It is also recommended to inspect the catalytic converter first, as reduced gas emission efficiency in Bank 2 can trigger this code. Performance issues, including reduced engine power and acceleration problems, are common as the efficiency of the catalytic converter declines, potentially causing restrictions in the exhaust system. Addressing these concerns promptly can help resolve the ongoing performance issues in the Nissan Frontier.