DTC Detection Logic

DTC DETECTION LOGIC

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.] [EVT control position sensor (bank 1) circuit is shorted.] (PSP sensor circuit is shorted.) Accelerator pedal position sensor Throttle position sensor Camshaft position sensor (PHASE) (bank 1) Exhaust valve timing control position sensor (bank 1) Power steering pressure sensor