LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2018 >> QX60 AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (4 Of 6) >> DTC/Circuit Diagnosis >> DTC P0452: EVAP Control System Pressure Sensor >> DTC Confirmation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Confirmation Procedure

  1. PRECONDITIONING 

    If DTC Confirmation Procedure has been previously conducted, always perform the following procedure 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:

    Always perform test at a temperature of 5 deg. C (41 deg. F) or more.

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE 

    SYMBOL With CONSULT

    1. Start engine and warm it up to normal operating temperature.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Turn ignition switch ON.
    4. Turn ignition switch OFF and wait at least 10 seconds.
    5. Turn ignition switch ON.
    6. On CONSULT screen, select "ENGINE">>"Data Monitor".
    7. Make sure that "FUEL T/TMP SE" is more than 0 deg. C (32 deg. F).
    8. Start engine and wait at least 20 seconds.
    9. Check 1st trip DTC.

    SYMBOL With GST

    1. Start engine and warm it up to normal operating temperature.
    2. Set voltmeter probes to ECM harness connector terminals as per the following.

      ECM

      Connector

      +

      -

      Terminal

      E32

      173

      200

    3. Make sure that the voltage is less than 4.2 V.
    4. Turn ignition switch OFF and wait at least 10 seconds.
    5. Turn ignition switch ON.
    6. Turn ignition switch OFF and wait at least 10 seconds.
    7. Start engine and wait at least 20 seconds.
    8. Check 1st trip DTC.

    Is DTC P0452 detected?

    YES

    Proceed to Diagnosis Procedure .

    NO

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

    NO

    Confirmation after repair: INSPECTION END