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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (2 Of 4)) >> DTC/Circuit Diagnosis >> DTC P0326: Knock Sensor 1 Bank 1 >> DTC Diagnosis Procedure >> PR25DD engine

PR25DD engine

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC PRIORITY 

    If DTC P0326 is displayed with DTC P0327 or P0328, first perform the confirmation procedure (trouble diagnosis) for DTC P0327 or P0328.

    Is applicable DTC detected?

    YES

    Perform diagnosis of applicable. Refer to DTC Index .

    NO

    GO TO 2.

  2. CHECK INSTALLATION CONDITION OF KNOCK SENSOR 

    Visually check that the knock sensor is installed normally.

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Repair or replace error-detected parts.

  3. CHECK INTERMITTENT INCIDENT 

    Check intermittent incident. Refer to Inspection .

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace error-detected parts.

  4. CHECK KNOCK SENSOR CIRCUIT 

    Check knock sensor circuit. Refer to DTC Diagnosis Procedure .

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Repair or replace error-detected parts.

  5. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Turn ignition switch ON.
    2. Erase DTC.
    3. Perform DTC confirmation procedure. Refer to DTC Description .

    Is the 1st trip DTC P0326 displayed again?

    YES

    Replace ECM.

    NO

    INSPECTION END