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Home >> Infiniti >> 2011 >> M37 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 292 (Engine Control System - DTCS P1550 To P2A03) >> DTC P1551, P1552: Battery Current Sensor >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2012 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
P1551 BAT CURRENT SENSOR
(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.)

    (Accelerator pedal position sensor 2 circuit is shorted.)

    [Camshaft position sensor (bank 1) circuit is shorted.]

    (Crankshaft position sensor circuit is shorted.)

    (Refrigerant pressure sensor circuit is shorted.)

    (EVAP control system pressure sensor circuit is shorted.)

  • Battery current sensor
  • Accelerator pedal position sensor
  • Camshaft position sensor (bank 1)
  • Crankshaft position sensor
  • Refrigerant pressure sensor
  • EVAP control system pressure sensor
P1552 Battery current sensor circuit high input
(BAT CURRENT SENSOR)		 An excessively high voltage from the sensor is sent to ECM.
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