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Home >> Lexus >> 2005 >> IS 300 SportCross >> Repair and Diagnosis >> Engine Performance >> System >> Engine - Diagnostics >> DTC P0550, P0552, P0553: Power Steering Pressure Sensor/Switch Circuit, Power Steering Pressure Sensor/Switch Circuit Low/High Input >> Monitor Description
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Monitor Description

The ECM monitors the sensor voltage and uses this value to regulate the engine idling speed. When the sensor output voltage deviates from the normal operating range, the ECM determines that there is a malfunction in the power steering oil pressure sensor circuit and sets a DTC.

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