How to Diagnose P0430 and P0332 Codes Step by Step
TL;DR P0430 reports catalyst efficiency below threshold on bank 2. P0332 reports a low signal from the bank 2 knock sensor. Both codes sit on the same bank, so a single wiring harness or ground fault can produce them together. Diagnose the knock sensor first. Retarded timing from a knock fault changes exhaust temperature and…