Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (2 Of 4) >> DTC/Circuit Diagnosis >> P0460 Fuel Level Sensor >> DTC Description

DTC Description

When the vehicle is parked, naturally the fuel level in the fuel tank is stable. It means that output signal of the fuel level sensor does not change. If ECM senses sloshing signal from the sensor, fuel level sensor malfunction is detected.

DTC DETECTION LOGIC 

DTC CONSULT screen terms(Trouble diagnosis content) DTC detection condition
P0460 00 FUEL LEV SEN SLOSH(Fuel Level Sensor "A" Circuit) Diagnosis condition Engine running at idle
Signal (terminal) Fuel level sensor signal
Threshold Even though the vehicle is parked, a signal being varied is sent from the fuel level sensor to ECM
Diagnosis delay time -

POSSIBLE CAUSE 

FAIL-SAFE 

Not applicable

DTC CONFIRMATION PROCEDURE 

  1. CHECK DTC PRIORITY 
    • If DTC P0460 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
    • If DTC P0460 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607.

    Is applicable DTC detected?

    >>

    Perform diagnosis of applicable.

    >>

    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.

    >>

    GO TO 3.

  3. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Start the engine and wait maximum of 2 consecutive minutes.
    2. Check 1st trip DTC.

    Is 1st trip DTC detected?

    >>

    Proceed to Diagnosis Procedure .

    >>

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

    >>

    Confirmation after repair: INSPECTION END