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Home >> Nissan-Datsun >> 2021 >> Sentra SR >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (4 Of 4) >> DTC/Circuit Diagnosis >> DTC P2253: O2 Sensor 1 Bank 1 >> Confirmation Procedure
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Confirmation Procedure

  1. PRECONDITIONING 

    If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

    TESTING CONDITION:

    Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.

    Will CONSULT be used?

    YES

    GO TO 2.

    NO

    GO TO 6.

  2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION 

    SYMBOL WITH CONSULT

    1. Start engine and warm it up to normal operating temperature.
    2. Select "A/F SEN1 (B1)" in "DATA MONITOR" mode of "ENGINE" with CONSULT.
    3. Check "A/F SEN1 (B1)" indication.

    Does the indication constantly fluctuate around 2.2 V?

    YES

    GO TO 3.

    NO

    Refer to DTC Diagnosis Procedure .

  3. PERFORM DTC CONFIRMATION PROCEDURE-1 
    1. Select "ENGINE" of "A/F SEN1" in "DTC WORK SUPPORT" mode of "A/F (B1) P0130" with CONSULT.
    2. "TESTING" is displayed on the CONSULT screen when the following conditions are met.

      ENG SPEED

      850 - 2, 300 RPM

      VHCL SPEED SE

      More than 64 km/h (40 mph)

      B/FUEL SCHDL

      1.0 - 8.0 msec

      Selector lever

      D position
      CAUTION: Always drive vehicle at a safe speed.

    Is "TESTING" displayed on CONSULT screen?

    YES

    GO TO 4.

    NO

    If "TESTING" is not displayed after 20 seconds, GO TO 2.

  4. PERFORM DTC CONFIRMATION PROCEDURE-2 
    1. Release accelerator pedal fully.
      NOTE: Never operate brake pedal when releasing the accelerator pedal.
    2. Confirm that "TESTING" change to "COMPLETED".

    Is "COMPLETED" displayed on CONSULT screen?

    YES

    GO TO 5.

    OUT OF CONDITION

    GO TO 3.

  5. PERFORM DTC CONFIRMATION PROCEDURE-3 

    Touch "SELF - DIAG RESULT".

    Is "OK" displayed on CONSULT screen?

    YES

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    YES

    Confirmation after repair: INSPECTION END

    NO

    "NG" proceed to DTC Diagnosis Procedure .

  6. PERFORM COMPONENT FUNCTION CHECK 

    SYMBOL WITHOUT CONSULT

    NOTE: Use component function check to check the overall function of the A/F sensor 1 circuit. During this check, a 1st trip DTC might not be confirmed.
    1. Start engine and warm it up to normal operating temperature.
    2. Shift the lever to suitable position and drive for a few minutes at 80 km/h (50 MPH).
      CAUTION: Always drive vehicle at a safe speed.
    3. Release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (31 MPH).
      NOTE: Never apply brake when releasing the accelerator pedal.
    4. Repeat steps 2 and 3, 5 times.
    5. Stop the vehicle, turn ignition switch OFF and wait at least 10 seconds.
    6. Restart engine.
    7. Repeat steps 2 and 3, 5 times.
    8. Stop the vehicle and Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    DTC Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    NO

    Confirmation after repair: INSPECTION END

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