Question

Changed the 02 sensor in 2001 Nissan Maxima but still, have the same engine code p0430, what to do?

Answer 1

The P0430 code is a frequent problem with the 2001 Nissan Maxima, and more than likely your need to replace the catalytic converter to repair the problem. Before replacing any parts, make sure there are no intake or exhaust leaks, leaks can cause an improper O2 sensor reading.

P0430 NISSAN - Catalyst System Efficiency Below Threshold Bank 2
Read more: https://www.autocodes.com/p0430_nissan.html