FixVault

On Board Diagnosis Logic: Notes

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.
NOTE: If DTC P0122, P0123 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229.

Refer to DTC P1229 SENSOR POWER SUPPLY .

These self-diagnoses have the one trip detection logic. 

Fig 1: On Board Diagnosis Logic Chart
G00795763Courtesy of NISSAN MOTOR CO., U.S.A.