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Home >> Infiniti >> 2013 >> M56 Sport >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1087 To P2542 >> DTC P2127, P2128: App Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
P2127 APP SEN 2/CIRC (Accelerator pedal position sensor 2 circuit low input) An excessively low voltage from the APP sensor 2 is sent to ECM.
  • Harness or connectors (Accelerator pedal position sensor 2 circuit is shorted.)

    (Battery current sensor circuit is shorted.)

    (Crankshaft position sensor circuit is open or shorted.)

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

    (EVAP control system pressure sensor circuit is shorted.)

    (Refrigerant pressure sensor circuit is shorted.)

  • Accelerator pedal position sensor 2
  • Battery current sensor
  • Crankshaft position sensor
  • Camshaft position sensor (bank 1)
  • EVAP control system pressure sensor
  • Refrigerant pressure sensor
P2128 APP SEN 2/CIRC (Accelerator pedal position sensor 2 circuit high input) An excessively high voltage from the APP sensor 2 is sent to ECM.
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