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Home >> Nissan-Datsun >> 2002 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 2275 (Engine Control System - DTCS P1271 To P2138) >> DTC P2138: App Sensor >> On Board Diagnosis Logic >> Notes
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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.

This self-diagnosis has the one trip detection logic  .

NOTE: If DTC P2138 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229. Refer to "DTC P1229 SENSOR POWER SUPPLY "
ON BOARD DIAGNOSTIC LOGIC

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2138
2138
Accelerator pedal position sensor circuit range/performance problem Rationally incorrect voltage is sent to ECM compared with the signals from APP sensor 1 and APP sensor 2.
  • Harness or connector (The APP sensor 1 and 2 circuit is open or shorted.) (The TP sensor circuit is shorted.)
  • Accelerator pedal position sensor 1 and 2
  • Electric throttle control actuator (TP sensor 1 and 2)