DTC P1274: A/F Sensor 1: Wiring Diagram

Fig 1: Wiring Diagram - EC-A/F-01

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

Specification data are reference values and are measured between each terminal and ground.

CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Fig 2: ECM Terminals Voltage Chart

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