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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (1 Of 4)) >> DTC/Circuit Diagnosis >> P0090 Fuel Rail Pressure Control System >> DTC Description >> PR25DD engine >> DTC Confirmation Procedure

DTC Confirmation Procedure

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

    If DTC P0090 is displayed with DTC P1197, first perform the trouble diagnosis for DTC P1197.

    Is applicable DTC detected?

    YES

    Perform diagnosis of applicable. Refer to DTC Description .

    NO

    GO TO 2.

  2. 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.
    • Before performing the following procedure, check that the fuel tank is 1/8 full of fuel.

    GO TO 3.

  3. DTC CONFIRMATION PROCEDURE 

    SYMBOL With CONSULT

    1. Start the engine.
    2. Select "COOLANT TEMP/S" in "DATA MONITOR" of "ENGINE" using CONSULT
    3. Maintain the following condition for 5 seconds or more at idle.

      COOLANT TEMP/S

      70 deg. C (158 deg. F) or more
    4. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    Proceed to DTC Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Inspection .

    NO

    Confirmation after repair: INSPECTION END

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