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Home >> Infiniti >> 2006 >> QX56 RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0171 To P0453 >> DTC P0451 EVAP Control System Pressure Sensor >> Component Description
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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: Locating EVAP Canister, EVAP Pressure Sensor And EVAP Vent Control Valve
G04132530Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Sensor Output Voltage VS Absolute Pressure Graph
G04074998Courtesy of NISSAN MOTOR CO., U.S.A.