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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1182 (Engine Control System - DTCS P0222 To P0607 (VQ40DE)) >> DTC P0550: PSP Sensor >> On Board Diagnosis Logic

On Board Diagnosis Logic

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

The MIL will not illuminate for this diagnosis  .

NOTE: If DTC P0550 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to P0643 SENSOR POWER SUPPLY .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0550
0550
Power steering pressure sensor circuit An excessively low or high voltage from the sensor is sent to ECM.
  • Harness or connectors (The sensor circuit is open or shorted)
  • Power steering pressure sensor