Nissan Frontier D22. Manual - part 466

DTC P0456 EVAP CONTROL SYSTEM

EC-967

[VG33E]

C

D

E

F

G

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A

EC

17. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

 With CONSULT-II

Check air passage continuity of EVAP canister purge volume control
solenoid valve under the following conditions.

 Without CONSULT-II

Check air passage continuity of EVAP canister purge volume control
solenoid valve under the following conditions.

OK or NG

OK

>> GO TO 18.

NG

>> Replace EVAP canister purge volume control solenoid

valve.

AEC652A

Condition

PURG VOL CONT/V value

Air passage continuity between A and B

100 %

Yes

0%

No

SEF660U

AEC652A

Condition

Air passage continuity between A and B

12V direct current supply between ter-
minals 1 and 2

Yes

No supply

No

SEF661U

EC-968

[VG33E]

DTC P0456 EVAP CONTROL SYSTEM

18. 

CHECK FUEL TANK TEMPERATURE SENSOR

1.

Remove fuel level sensor unit.

2.

Check resistance between fuel level sensor unit terminals T and
E by heating with hot water or heat gun as shown in the figure.

OK or NG

OK

>> GO TO 19.

NG

>> Replace fuel level sensor unit.

19. 

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

1.

Remove EVAP control system pressure sensor with its harness connector connected.

2.

Remove hose from EVAP control system pressure sensor.

3.

Turn ignition switch ON.

4.

Use pump to apply vacuum and pressure to EVAP control system pressure sensor as shown in figure.

5.

Check input voltage between ECM terminal 62 and ground.

CAUTION:

●

Always calibrate the vacuum pump gauge when using it.

●

Do not apply below 

−93.3 kPa (−700 mmHg, −27.56 inHg)

or over 101.3 kPa (760 mmHg, 29.92 inHg) of pressure.

OK or NG

OK

>> GO TO 20.

NG

>> Replace EVAP control system pressure sensor.

20. 

CHECK EVAP PURGE LINE

Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection.
Refer to 

EC-1165, "EVAPORATIVE EMISSION LINE DRAWING"

 .

OK or NG

OK

>> GO TO 21.

NG

>> Repair or reconnect the hose.

21. 

CLEAN EVAP PURGE LINE

Clean EVAP purge line (pipe and rubber tube) using air blower.

>> GO TO 22.

22. 

CHECK FUEL LEVEL SENSOR

Refer to 

DI-18, "FUEL LEVEL SENSOR UNIT CHECK"

 .

OK or NG

OK

>> GO TO 23.

NG

>> Replace fuel level sensor unit.

Temperature 

°C (°F)

Resistance k

Ω

20 (68)

2.3 - 2.7

50 (122)

0.79 - 0.90

PBIB1425E

Applied vacuum

Voltage V

Not applied

1.8 - 4.8

−26.7 kpa (−200 mmHg, −7.87 inHg)

2.1 to 2.5V lower than above value

PBIB1426E

DTC P0456 EVAP CONTROL SYSTEM

EC-969

[VG33E]

C

D

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EC

23. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-696, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END.

EC-970

[VG33E]

DTC P0460 FUEL LEVEL SENSOR

DTC P0460 FUEL LEVEL SENSOR

PFP:25060

Component Description

UBS00DLR

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 ECM.
It consists of two parts, one is mechanical float and the other side is
variable resistor. Fuel level sensor output voltage changes depend-
ing on the movement of the fuel mechanical float.

On Board Diagnosis Logic

UBS00DLS

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 malfunc-
tion is detected.

DTC Confirmation Procedure

UBS00DLT

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 5 seconds before conducting the next test.

 WITH CONSULT-II

1.

Turn ignition switch ON.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Start engine and wait maximum of 2 consecutive minutes.

4.

If 1st trip DTC is detected, go to 

EC-972, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

SEF800Z

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0460

Fuel level sensor circuit 
noise

Even though the vehicle is parked, a signal 
being varied is sent from the fuel level sensor 
to ECM.

●

Harness or connectors
(The sensor circuit is open or shorted)

●

Fuel level sensor

SEF195Y