P0174 Infiniti I35

Question

Step to fixing trouble code p0174

Answer 1

HI there,

This code is for a lean fuel mixture on bank 1. Usually when I see this code on Nissan products the issue is the mass air flow sensor. However, you should also check for any intake manifold gasket leaks on bank 2 and the front O2 sensor on bank 2. These can also cause this code on one side of the engine.