FixVault
Home
›
Infiniti
›
2014
›
Q50 Base, AWD
›
Repair and Diagnosis
›
Engine Performance
›
System
›
Engine Control System - DTCS P0500 To P2101 (Except Hybrid)
›
DTC P0643: Sensor Power Supply
›
DTC Description
›
DTC Detection Logic
DTC Detection Logic
DTC DETECTION CONDITION
DTC No.
CONSULT screen terms (Trouble diagnosis content)
DTC detecting condition
P0643
SENSOR POWER/CIRC (Sensor reference voltage "A" circuit high)
ECM detects that the voltage of power source for sensor is excessively low or high.