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Home >> Infiniti >> 2011 >> M56 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 294 (Engine Control System - DTCS P1233 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 2011 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION AND POSSIBLE CAUSES

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.)

    [CKP sensor (POS) circuit is open or shorted.]

    [CMP sensor (PHASE) (bank 2) circuit is open or shorted.]

    (APP sensor 2 circuit is shorted.)

    (EVAP control system pressure sensor circuit is shorted.)

    (Refrigerant pressure sensor circuit is shorted.)

  • Battery current sensor
  • Crankshaft position sensor (POS)
  • Camshaft position sensor (PHASE) (bank 2)
  • Accelerator pedal position sensor
  • EVAP control system pressure sensor
  • Refrigerant pressure sensor
P1552 Battery current sensor circuit high input An excessively high voltage from the sensor is sent to ECM.
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