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Home >> Nissan-Datsun >> 2009 >> 350Z Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0643 To P2A03 >> DTC P2127, P2128 App Sensor >> On Board Diagnosis Logic >> Notes

On Board Diagnosis Logic: Notes

These self-diagnoses have the one trip detection logic  .

DTC DETECTING CONDITION CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2127
2127		 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 open or shorted.]

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

    [EVT control position sensor (bank 2) circuit is shorted.]

    (EVAP control system pressure sensor circuit is shorted.)

    (Refrigerant pressure sensor circuit is shorted.)

  • Accelerator pedal position sensor
  • Crankshaft position sensor (POS)
  • Camshaft position sensor (PHASE) (bank 2)
  • Exhaust valve timing control position sensor (bank 2)
  • EVAP control system pressure sensor
  • Refrigerant pressure sensor
P2128
2128		 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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