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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 2269 (Engine Control System - DTCS P1271 To P2138) >> DTC P2127, P2128: App Sensor >> On Board Diagnosis Logic >> Notes

On Board Diagnosis Logic: Notes

WARNING: This page is about a different car, the 2005 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.

These self-diagnoses have the one trip detection logic  .

ON BOARD DIAGNOSTIC LOGIC

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2127 2127 Accelerator pedal position sensor 2 circuit low input An excessively low voltage from the APP sensor 2 is sent to ECM.
  • Harness or connectors (The APP sensor 2 circuit is open or shorted.) (The TP sensor circuit shorted.)
  • Accelerator pedal position sensor (APP sensor 2)
  • Electric throttle control actuator (TP sensor 1 and 2)
P2128
2128
Accelerator pedal position sensor 2 circuit high input An excessively high voltage from the APP sensor 2 is sent to ECM.