On Board Diagnosis Logic

WARNING: This page is about a different car, the 2005 Infiniti FX45. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If DTC P0462 or P0463 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to DTC U1000, U1001 CAN COMMUNICATION LINE

This diagnosis indicates the former, to detect open or short circuit malfunction.

Fig 1: DTC Detecting Condition And Possible Cause Chart

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