General Information

Component Location





General Description

The power steering system increases steering performance and improves steering feel and power-saving effectiveness. The power steering pressure switch senses the power steering load and converts it into a voltage (high/low) signal to the PCM. The PCM then controls the idle speed control motor by using the voltage signal from the power steering pressure switch.

DTC Description

The ECM monitors the power steering switch and can determine when the signal is outside of the possible range of the switch. When the signal is out of range for a prolonged period of time, the ECM will set DTC P0551.

DTC Detecting Condition





Schematic Diagram





Signal Waveform