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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 P2138: 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.
NOTE:

If DTC P2138 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to  DTC LOGIC  . 

DTC No. CONSULT screen terms
(Trouble diagnosis content)		 DTC detecting condition Possible cause
P2138 APP SENSOR
(Throttle/Pedal position sensor/switch "D" / "E" voltage correlation)		 Rationally incorrect voltage is sent to ECM compared with the signals from APP sensor 1 and APP sensor 2.
  • Harness or connector

    (APP sensor 1 or 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 1 or 2)

  • Camshaft position sensor (PHASE)
  • Engine oil pressure sensor
  • Refrigerant pressure sensor
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