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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) (bank 1) circuit is shorted.]

    [Manifold absolute pressure (MAP) sensor circuit is shorted.]

    (PSP sensor circuit is shorted.)

    [CMP sensor (PHASE) (bank 2) circuit is shorted.]

    [Battery current sensor circuit is shorted/]

  • Accelerator pedal position sensor
  • Throttle position sensor
  • Camshaft position sensor (PHASE) (bank 1)
  • Manifold absolute pressure (MAP) sensor
  • Power steering pressure sensor
  • Camshaft position sensor (PHASE) (bank 2)
  • Battery current sensor
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