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Home >> Scion >> 2006 >> xA Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (1NZ-FE) >> SFI System >> DTC P0550 Power Steering Pressure Sensor Circuit Malfunction; DTC P0552 Power Steering Pressure Sensor Circuit Low Input; DTC P0553 Power Steering Pressure Sensor Circuit High Input >> Description

DTC P0550 Power Steering Pressure Sensor Circuit Malfunction; DTC P0552 Power Steering Pressure Sensor Circuit Low Input; DTC P0553 Power Steering Pressure Sensor Circuit High Input: 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 idling RPM according to the voltage output of the sensor.

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
P0550 Open or short in power steering oil pressure sensor circuit detected for more than 3 seconds after ignition switch turned ON.
(1 trip detection logic)
  • Open or short in power steering oil pressure sensor circuit
  • Power steering oil pressure sensor
  • ECM
P0552 Open in power steering oil pressure sensor circuit detected for more than 3 seconds after ignition switch turned ON.
  • Open in power steering oil pressure sensor circuit
  • Power steering oil pressure sensor
  • ECM
P0553 Short in power steering oil pressure sensor circuit detected for more than 3 seconds after ignition switch turned ON.
  • Short in power steering oil pressure sensor circuit
  • Power steering oil pressure sensor
  • ECM