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Home >> Nissan-Datsun >> 2009 >> Murano SL, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0455 To P1421 >> P0643 Sensor Power Supply >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

DTC DETECTING CONDITION CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0643 Sensor power supply circuit short ECM detects a voltage of power source for sensor is excessively low or high.
  • Harness or connectors (APP sensor 1 circuit is shorted.)

    (TP sensor circuit is shorted.)

    [CMP sensor (PHASE) circuit is shorted.)

    (PSP sensor circuit is shorted.)

    (Battery current sensor circuit is shorted.)

  • Accelerator pedal position sensor
  • Throttle position sensor
  • Camshaft position sensor (PHASE)
  • Power steering pressure sensor
  • Battery current sensor