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Home >> Nissan-Datsun >> 2012 >> Quest LE >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Engine Control System - DTCS P1550 To P2A03) >> DTC P2127, P2128: App Sensor >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2011 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTION CONDITION CHART

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.]

    (Refrigerant pressure sensor circuit is shorted.)

    (EVAP control system pressure sensor circuit is shorted.)

  • Accelerator pedal position sensor (APP sensor 2)
  • Crankshaft position sensor (POS)
  • EVAP control system pressure sensor
  • Refrigerant 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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