LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2014 >> Versa Note S, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) >> DTC/Circuit Diagnosis >> DTC P0643: Sensor Power Supply >> DTC Logic >> DTC Detection Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Detection Logic

DTC No. Trouble diagnosis content 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 (Accelerator pedal position 1 circuit is shorted.) (Throttle position sensor 1 circuit is shorted.) (Camshaft position sensor circuit is shorted.) (Exhaust valve timing control position sensor circuit is shorted.) (Engine oil pressure sensor circuit is shorted.)
  • Accelerator pedal position sensor
  • Throttle position sensor
  • Camshaft position sensor
  • Exhaust valve timing control position sensor
  • Engine oil pressure sensor