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Home >> Infiniti >> 2017 >> QX80 Base, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTCS) (3 Of 4) >> DTC/Circuit Diagnosis >> DTC P0550: PSP Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC No. Trouble diagnosis name
(Trouble diagnosis content)
DTC detecting condition Possible cause
P0550 PW ST P SEN/CIRC
(Power steering pressure sensor circuit)
An excessively low or high voltage from the sensor is sent to ECM.
  • Harness or connectors

    (The Power steering pressure sensor circuit is open or shorted)

  • Power steering pressure sensor
  • Sensor power supply 3