On Board Diagnosis Logic: Notes

These self-diagnoses have the one trip detection logic. 

If DTC P2122 or P2123 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229. Refer to  DTC P1229 SENSOR POWER SUPPLY   . 

Fig 1: DTC Detecting Condition And Possible Cause Chart

Courtesy of NISSAN MOTOR CO., U.S.A.