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Home >> Nissan-Datsun >> 2018 >> Versa Note S >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (3 Of 3) >> DTC/Circuit Diagnosis >> DTC P2123: App Sensor >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

NOTE: If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to DTC Logic .

DTC No.

Trouble diagnosis content

DTC detecting condition

Possible cause

P2122

Accelerator pedal position sensor 1 circuit low input

An excessively low voltage from the APP sensor 1 is sent to ECM.
  • Harness or connectors

    (APP sensor 1 circuit is open or shorted.)

  • Accelerator pedal position sensor

    (APP sensor 1)

P2123

Accelerator pedal position sensor 1 circuit high input

An excessively high voltage from the APP sensor 1 is sent to ECM.
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