With Consult-II

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

Turn ignition switch ON.
Select "DATA MONITOR" mode with CONSULT-II.
Start engine and let it idle for at least 10 seconds.
If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE "

Fig 1: DTC P1212 Selecting "DATA MONITOR" Mode With CONSULT-II
Courtesy of NISSAN MOTOR CO., U.S.A.