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Home >> Infiniti >> 2017 >> QX50 RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (3 Of 4) >> DTC / Circuit Diagnosis >> DTC P1551, P1552: Battery Current Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

NOTE:

If DTC P1551 or P1552 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to DTC LOGIC .

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1551 Battery current sensor circuit low input An excessively low voltage from the sensor is sent to ECM.
  • Harness or connectors

    (Battery current sensor circuit is open or shorted.)

  • Battery current sensor
P1552 Battery current sensor circuit high input An excessively high voltage from the sensor is sent to ECM.