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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 116 (Engine Control System (DTC/Circuit Diagnosis) (VQ35DE) (Except Hybrid) (3 Of 3)) >> DTC/Circuit Diagnosis >> DTC P2127, P2128: App Sensor >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
DTC No. CONSULT screen terms
(Trouble diagnosis content)		 DTC detecting condition Possible cause
P2127 APP SEN 2/CIRC
(Throttle/Pedal position sensor/switch "E" circuit low)		 An excessively low voltage from the APP sensor 2 is sent to ECM.
  • Harness or connectors

    (APP sensor 2 circuit is open or shorted.)

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

    (EOP sensor circuit is shorted.)

    (Refrigerant pressure sensor is shorted.)

  • Accelerator pedal position sensor

    (APP sensor 2)

  • Camshaft position sensor (PHASE)
  • Engine oil pressure sensor
  • Refrigerant pressure sensor
P2128 APP SEN 2/CIRC
(Throttle/Pedal position sensor/switch "E" circuit high)		 An excessively high voltage from the APP sensor 2 is sent to ECM.
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