Component Description

WARNING: This page is about a different car, the 2005 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases.

Fig 1: Locating DTC P0451 EVAP Control System Pressure Sensor

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

Fig 2: DTC P0451 - Output Voltage V/S Pressure Graph

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