With Consult-II

Turn ignition switch ON.
Select "DATA MONITOR" mode with CONSULT-II.
Start engine and let it idle for at least 60 seconds.
If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE "

Fig 1: DTC P1211 Selecting "DATA MONITOR" Mode With CONSULT-II
Courtesy of NISSAN MOTOR CO., U.S.A.