Component Description

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: Identifying EVAP Canister Vent Control Valve

Courtesy of NISSAN NORTH AMERICA, INC.

Fig 2: EVAP Control System Pressure Sensor Output Voltage Graph

Courtesy of NISSAN NORTH AMERICA, INC.