2002 Nissan Maxima 3.5L with engine code P0507. Cause misfire

Question

Car misfires when at idle speed. Can this be the cause of a misfire? The idle speed drops down to about 800 rpm. I also have two other codes present; P1800: VIAS control solenoid valve and P0430: Catalyst System Efficiency below threshold Bank 2.

Answer 1

You need to find the cause of the misfire first. The P0507, P1800 and P0430 code could be triggered by the misfire, but most likely is not the cause of the misfire.

Common causes for misfire problems on the 2002 Maxima are the ignition coils and spark plugs.