Symptoms

- Engine Light ON (or Service Engine Soon Warning Light) - Power steering inoperative

Possible Causes

- Power steering pressure sensor harness or connectors - Power steering pressure sensor harness is open or shorted - Faulty power steering pressure sensor - Faulty power steering pump

When Detected

A low voltage from the sensor is sent to ECM or PCM.

Description

Power steering pressure (PSP) sensor 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 PCM. The PCM 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.