July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

On Board Diagnosis Logic

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 Condition Detecting Chart

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