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Home >> Nissan-Datsun >> 2019 >> Sentra SL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (1.8L) (4 Of 4) >> DTC/Circuit Diagnosis >> DTC P2138: App Sensor >> DTC Description >> DTC Detection Logic

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
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