chevy Tahoe year 97

Question

what is the code reading on 97 chevy Tahoe the code is po430.

Answer 1

Hi there,

This code is for the bank 2 catalyst below threshold. This means the converter is not cleaning the exhaust as it should. This can be caused by a few different things. The catalytic converter, either O2 sensor or an exhaust leak. In most cases though the converter is in fact the issue.