Nissan Sentra B18 (2020-2025) Service Manual: P0462 Fuel Level Sensor

Nissan Sentra B18 (2020-2025) Service Manual / Engine / Work Procedure (After Replacing Electric Throttle Control Actuator) / Dtc/circuit Diagnosis / P0462 Fuel Level Sensor

Dtc Description

DTC Description

This diagnosis indicates the former, to detect open or short circuit malfunction.

DTC DETECTION LOGIC

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P0462	FUEL LEVL SEN/CIRC (Fuel level sensor ″A″ circuit low)	Diagnosis condition	Ignition switch ON
		Signal (terminal)	Fuel level sensor signal
		Threshold	An excessively low voltage from the sensor is sent to ECM
		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

CHECK DTC PRIORITY
- If DTC P0462 or P0463 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
- If DTC P0462 or P0463 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.
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.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is between 11 V and 16 V at ignition switch ON.

>>
GO TO 3.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 5 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >>
Proceed to DTC Diagnosis Procedure.
NO-1 >>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2 >>
Confirmation after repair: INSPECTION END

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

CHECK DTC PRIORITY
- If DTC P0462 or P0463 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
- If DTC P0462 or P0463 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.
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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