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Home >> Infiniti >> 2013 >> EX37 Journey, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1225 To P2138 >> DTC P2127, P2128: App Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

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

    (APP sensor 2 circuit is open or shorted.)

    [CKP sensor (POS) circuit is shorted.]

    (EVAP control system pressure sensor circuit is shorted.)

    (Refrigerant pressure sensor circuit is shorted.)

  • Accelerator pedal position sensor (APP sensor 2)

    (Brake booster pressure sensor circuit is shorted)

  • Crankshaft position sensor (POS)
  • EVAP control system pressure sensor
  • Refrigerant pressure sensor
  • Brake booster pressure sensor
P2128 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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