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Home >> Infiniti >> 2021 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (1 Of 5) >> Engine (ECM) >> DTC P00D2: Ho2S2 Heater >> Confirmation Procedure

Confirmation Procedure

  1. PRECONDITIONING 
    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 11 V or more at idle.

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Start engine and warm it up to the 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. Start engine and keep the engine speed between 3, 500 and 4, 000 rpm for at least 1 minute under no load.
    6. Let engine idle for 1 minute.
    7. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    Refer to DTC Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Inspection .

    NO

    Confirmation after repair: INSPECTION END