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Home >> Infiniti >> 2008 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS P1148 To P2A03 >> DTC P1550: Battery Current Sensor >> On Board Diagnosis Logic
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On Board Diagnosis Logic

The MIL will not light up for this self-diagnosis. 

NOTE: If DTC P1550 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to P0643 SENSOR POWER SUPPLY .
DTC DETECTING CONDITION CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1550
1550
Battery current sensor circuit range/performance The output voltage of the battery current sensor remains within the specified range while engine is running.
  • Harness or connectors (The sensor circuit is open or shorted.)
  • Battery current sensor