LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2024 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Component /Circuit Diagnosis >> A/F Sensor 1 >> Component Function Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Component Function Check

  1. PERFORM COMPONENT FUNCTION CHECK SYMBOL
    1. Start engine and warm it up to normal operating temperature.
    2. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in the suitable gear position.
    3. Shift the selector lever position to D, then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (31 MPH).
      CAUTION:

      Always drive vehicle at a safe speed.

      NOTE: Never apply brake when releasing the accelerator pedal.
    4. Repeat steps 2 and 3 for 5 times.
    5. Stop the vehicle and turn ignition switch OFF.
    6. Wait at least 10 seconds and turn ignition switch ON.
    7. Turn ignition switch OFF and wait at least 10 seconds.
    8. Restart engine.
    9. Repeat steps 2 and 3 for 5 times.
    10. Stop the vehicle.
    11. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES>>

    Refer to DTC Diagnosis Procedure .

    NO>>

    INSPECTION END