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Home >> Infiniti >> 2021 >> QX80 Sensory, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (3 Of 5) >> Engine (ECM) >> DTC P0550: PSP Sensor >> DTC Description >> 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