DTC Detection Logic

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0643

SENSOR POWER/CIRC

(Sensor power supply circuit short)

ECM detects that the voltage of power source for sensor is excessively low or high.

• Harness or connectors

  (Accelerator pedal position sensor 1 circuit is shorted.)

  [Camshaft position sensor (bank 1) circuit is shorted.]

  [Exhaust valve timing control position sensor (bank 1) circuit is shorted.]

  (Throttle position sensor circuit is shorted.)

  (Crankshaft position sensor circuit is shorted.)

• Accelerator pedal position sensor 1
• Camshaft position sensor (bank 1)
• Exhaust valve timing control position sensor (bank 1)
• Throttle position sensor
• Crankshaft position sensor