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Home >> Infiniti >> 2010 >> M45 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0460 To P1421 >> DTC P0550 PSP Sensor >> Component Description
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Component Description

Power steering pressure (PSP) sensor (1) is installed to the power steering high-pressure tube and detects a power steering load.

This sensor is a potentiometer which transforms the power steering load into output voltage, and emits the voltage signal to the ECM. The ECM controls the electric throttle control actuator and adjusts the throttle valve opening angle to increase the engine speed and adjusts the idle speed for the increased load.

Fig 1: Identifying Power Steering Pressure (PSP) Sensor
G05210858Courtesy of NISSAN MOTOR CO., U.S.A.