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Home >> Nissan-Datsun >> 2014 >> Sentra S, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) >> DTC/Circuit Diagnosis >> DTC P2138: App Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

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.)

  • Accelerator pedal position sensor (APP sensor 1 or 2)
  • Sensor power supply 2 circuit