DTC Detection Logic

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 2) circuit is shorted.] [Manifold absolute pressure (MAP) sensor circuit is shorted.] (Throttle position sensor circuit is shorted.) Accelerator pedal position sensor 1 Camshaft position sensor (bank 2) Manifold absolute pressure (MAP) sensor Throttle position sensor