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Home >> Nissan-Datsun >> 2011 >> Sentra SE-R >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - DTCS P0506 To P2A00 (MR20DE) (Except CALIFORNIA) >> DTC P2122, P2123 App Sensor >> On Board Diagnosis Logic >> Notes

On Board Diagnosis Logic: Notes

These self-diagnoses have the one trip detection logic  .

NOTE: If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to DTC P0643 SENSOR POWER SUPPLY  .
DTC DETECTION CONDITION AND POSSIBLE CAUSES

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2122
2122		 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
2123		 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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