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Nissan Sentra B18 (2020-2025) Service Manual: P0461 Fuel Level Sensor

Dtc Description

DTC Description

Driving long distances naturally affect fuel gauge level.

This diagnosis detects the fuel gauge malfunction of the gauge not moving even after a long distance has been driven.

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0461

FUEL LEVEL SENSOR

(Fuel level sensor ″A″ circuit range/performance)

Diagnosis condition

—

Signal (terminal)

Fuel level sensor signal

Threshold

The output signal of the fuel level sensor does not change within the specified range even though the Nissan Sentra vehicle has been driven a long distance

Diagnosis delay time

—

POSSIBLE CAUSE

  • Harness or connectors

    • CAN communication line is open or shorted.

    • Fuel level sensor circuit is open or shorted.

  • Combination meter

  • Fuel level sensor

FAIL-SAFE

Not applicable

Confirmation Procedure

Confirmation Procedure

  1. CHECK DTC PRIORITY

    • If DTC P0461 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.

    • If DTC P0461 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607.

    Is applicable DTC detected?

    YES >>

    Perform diagnosis of applicable.

    • DTC UXXXX

    • DTC P0607: Refer to DTC Description.

    NO >>

    GO TO 2.

  2. PRECONDITIONING

    Warning:

    When performing following procedure, be sure to observe the handling of the fuel. Refer to General Precaution.

    Note:

    Use component function check to check the overall function of the fuel level sensor function. During this check, a 1st trip DTC might not be confirmed.

    TESTING CONDITION:

    Before starting component function check, preparation of draining fuel and refilling fuel is required.

    Do you have CONSULT?

    YES >>

    GO TO 3.

    NO >>

    GO TO 4.

  3. PERFORM COMPONENT FUNCTION CHECK-1

    With CONSULT

    Note:

    Start from step 10, if it is possible to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/8 Imp gal) in advance.

    1. Prepare a fuel container and a spare hose.

    2. Release fuel pressure from fuel line, refer to Work Procedure.

    3. Remove the fuel feed hose on the fuel level sensor unit.

    4. Connect a spare fuel hose where the fuel feed hose was removed.

    5. Turn ignition switch OFF and wait at least 10 seconds then turn ON.

    6. Select “FUEL LEVEL SE” in “DATA MONITOR” mode of “ENGINE” using CONSULT.

    7. Check “FUEL LEVEL SE” output voltage and note it.

    8. Select “FUEL PUMP RELAY” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.

    9. Touch “ON” and drain fuel approximately 30 (7-7/8 US gal, 6-5/8 Imp gal) and stop it.

    10. Check “FUEL LEVEL SE” output voltage and note it.

    11. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).

    12. Check “FUEL LEVEL SE” output voltage and note it.

    13. Confirm whether the voltage changes more than 0.03 V during step 7 to 10 and 10 to 12.

    Is the inspection result normal?

    YES-1 >>

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

    YES-2 >>

    Confirmation after repair: INSPECTION END

    NO >>

    Proceed to DTC Diagnosis Procedure.

  4. PERFORM COMPONENT FUNCTION CHECK-2

    Without CONSULT

    Note:

    Start from step 8, if it is possible to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/8 Imp gal) in advance.

    1. Prepare a fuel container and a spare hose.

    2. Release fuel pressure from fuel line. Refer to Work Procedure.

    3. Remove the fuel feed hose on the fuel level sensor unit.

    4. Connect a spare fuel hose where the fuel feed hose was removed.

    5. Turn ignition switch ON.

    6. Drain fuel by 30 (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.

    7. Confirm that the fuel gauge indication varies.

    8. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).

    9. Confirm that the fuel gauge indication varies.

    Is the inspection result normal?

    YES-1 >>

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

    YES-2 >>

    Confirmation after repair: INSPECTION END

    NO >>

    Proceed to DTC Diagnosis Procedure.

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

  1. CHECK DTC PRIORITY

    • If DTC P0461 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.

    • If DTC P0461 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607.

    Is applicable DTC detected?

    YES >>

    Perform diagnosis of applicable.

    • DTC UXXXX

    • DTC P0607: Refer to DTC Description.

    NO >>

    GO TO 2.

  2. CHECK COMBINATION METER FUNCTION

    Refer to Component Function Check(TYPE A), Component Function Check(TYPE B).

    Is the inspection result normal?

    YES >>

    INSPECTION END

    NO >>

    Refer to Diagnosis Procedure(TYPE A), Diagnosis Procedure(TYPE B).

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