Nissan Frontier. Manual - part 439

P0460 FUEL LEVEL SENSOR

EC-327

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

>> INSPECTION END

EC-328

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

P0461 FUEL LEVEL SENSOR

P0461 FUEL LEVEL SENSOR

Component Description

INFOID:0000000009480987

The fuel level sensor is mounted in the fuel level sensor unit. The

sensor detects a fuel level in the fuel tank and transmits a signal to

the combination meter. The combination meter sends the fuel level

sensor signal to the ECM through the CAN communication line.

It consists of two parts, one is mechanical float and the other is vari-

able resistor. Fuel level sensor output voltage changes depending on

the movement of the fuel mechanical float.

On Board Diagnosis Logic

INFOID:0000000009480988

NOTE:

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

Refer to 

EC-151

.

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

to 

EC-349

.

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.

Overall Function Check

INFOID:0000000009480989

Use this procedure to check the overall function of the fuel level sensor. During this check, a 1st trip DTC

might not be confirmed.

WARNING:

When performing the following procedure, always observe the handling of the fuel. Refer to 

FL-6,

"Removal and Installation"

.

TESTING CONDITION:

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

 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 

EC-466, "Fuel Pressure Check"

.

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 with CONSULT.

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

8. Select “FUEL PUMP” in “ACTIVE TEST” mode with 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.

BBIA0629E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0461
0461

Fuel level sensor circuit 
range/performance

The output signal of the fuel level sensor does 
not change within the specified range even 
though the vehicle has been driven a long dis-
tance.

• Harness or connectors

(the CAN communication line is open or 
shorted)

• Harness or connectors

(The sensor circuit is open or shorted)

• Combination meter
• Fuel level sensor

P0461 FUEL LEVEL SENSOR

EC-329

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

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 0.03V during step 7 to 10 and 10 to 12.

If NG, go to 

EC-329, "Diagnosis Procedure"

.

 WITH GST

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 

EC-466, "Fuel Pressure Check"

.

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.

10. If NG, go to 

EC-329, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009480990

1.

CHECK COMBINATION METER FUNCTION

Refer to 

MWI-4

.

OK or NG

OK

>> GO TO 2.

NG

>> Go to 

MWI-90, "Removal and Installation"

.

2.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

.

>> INSPECTION END

EC-330

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

P0462, P0463 FUEL LEVEL SENSOR

P0462, P0463 FUEL LEVEL SENSOR

Component Description

INFOID:0000000009480991

The fuel level sensor is mounted in the fuel level sensor unit. The

sensor detects a fuel level in the fuel tank and transmits a signal to

the combination meter. The combination meter. sends the fuel level

sensor signal to the ECM through CAN communication.

It consists of two parts, one is mechanical float and the other is vari-

able resistor. Fuel level sensor output voltage changes depending on

the movement of the fuel mechanical float.

On Board Diagnosis Logic

INFOID:0000000009480992

NOTE:

• If DTC P0462 or P0463 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC

UXXXX. Refer to 

EC-151

.

• If DTC P0462 or P0463 is displayed with DTC P0607, first perform the trouble diagnosis for DTC

P0607. Refer to 

EC-349

.

DTC Confirmation Procedure

INFOID:0000000009480993

NOTE:

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 more than 11V at ignition

switch ON.

WITH CONSULT

1. Turn ignition switch ON and wait at least 5 seconds.

2. Check 1st trip DTC.

3. If 1st trip DTC is detected, go to 

EC-330, "Diagnosis Procedure"

.

WITH GST

Follow the procedure “WITH CONSULT” above.

Diagnosis Procedure

INFOID:0000000009480994

1.

CHECK COMBINATION METER FUNCTION

Refer to 

MWI-4, "Work Flow"

.

OK or NG

OK

>> GO TO 2.

NG

>> Refer to 

MWI-90, "Removal and Installation"

.

2.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

BBIA0629E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0462
0462

Fuel level sensor circuit 
low input

An excessively low voltage from the sensor is 
sent to ECM.

• Harness or connectors

(The CAN communication line is open or 
shorted)

• Harness or connectors

(The sensor circuit is open or shorted)

• Combination meter
• Fuel level sensor

P0463
0463

Fuel level sensor circuit 
high input

An excessively high voltage from the sensor is 
sent to ECM.