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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1179 (Engine Control System - DTCS P0181 To P0550 (VK56DE)) >> DTC P0451: EVAP Control System Pressure Sensor >> Component Description

Component Description

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

The EVAP control system pressure sensor (2) detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases.

Fig 1: Identifying Fuel Filler Pipe, EVAP Control System Pressure Sensor, EVAP Canister Vent Control Valve, EVAP Canister And Drain Filter
G08165086Courtesy of NISSAN NORTH AMERICA, INC.
Fig 2: EVAP Control System Pressure Sensor Output Voltage Graph
G08165087Courtesy of NISSAN NORTH AMERICA, INC.