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Home >> Infiniti >> 2017 >> QX30 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (4 Of 5) >> DTC/Circuit Diagnosis >> DTC P0643: Sensor Power Supply >> DTC Description >> DTC Detection Logic

DTC Detection Logic

DTC No. CONSULT screen terms DTC detecting condition
DTC
(Trouble diagnosis content)		 Malfunction type
P0643 00 SENSOR REFERENCE VOLT A
(Sensor reference voltage "A" circuit high)		 NO SUBTYPE INFORMATION Output 1 for the reference voltage of the sensors has a short circuit to positive.
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