1. Check Ground Connections

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

Turn ignition switch OFF.
Loosen and retighten two ground screws.

Fig 1: Identifying Engine Ground Wires
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 2.
NG: Repair or replace ground connections.