Toyota
Nissan Versa
 Sedan Service Manual
Engine » Engine control system (EC) » P2122, P2123 APP sensor
DTC Logic

DTC DETECTION LOGIC

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

Refer to EC, "DTC Logic".

DTC No. Trouble diagnosis name 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 P2123 (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.

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.

  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON.
  3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

  1. Start engine and let it idle for 1 second.
  2. Check DTC.

Is DTC detected?

YES >> Go to EC, "Diagnosis Procedure".

NO >> INSPECTION END

    More about «P2122, P2123 APP sensor»:

    DTC Logic

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