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Home >> Toyota >> 2004 >> ECHO 2D Sedan, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Diagnostics >> DTC Tests >> DTC P0550: Power Steering Pressure Sensor/Switch Circuit: DTC P0552 Power Steering Pressure Sensor/Switch Circuit Low Input: DTC P0553 Power Steering Pressure Sensor/Switch Circuit HIGH Input >> Circuit Description
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Circuit Description

The power steering oil pressure sensor is turned ON when a power steering wheel load occurs by turning the steering wheel. The ECM regulates the engine idle RPM according to the voltage output of the sensor.

Fig 1: DTC Detection Condition Table
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