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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
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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.
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