Nissan Quest E52. Manual - part 526

 

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Nissan Quest E52. Manual - part 526

 

 

EC-314

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

• Never apply below -93.3 kPa (-0.952 kg/cm

2

, -13.53 psi) or pressure over 101.3 kPa (1.033 kg/cm

2

,

14.69 psi).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace EVAP control system pressure sensor. Refer to 

FL-16, "Exploded View"

.

P0456 EVAP CONTROL SYSTEM

EC-315

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

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P0456 EVAP CONTROL SYSTEM

DTC Logic

INFOID:0000000009651146

DTC DETECTION LOGIC

This diagnosis detects leaks in the EVAP line between fuel tank and EVAP canister purge volume control sole-
noid valve, using the negative pressure caused by decrease of fuel temperature in the fuel tank after turning
ignition switch OFF.
If ECM judges there are no leaks, the diagnosis will be OK.

CAUTION:

• Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the

MIL may illuminate.

• If the fuel filler cap is not tightened properly, the MIL may illuminate.
• Use only a genuine NISSAN rubber tube as a replacement.

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0456

Evaporative emission control 

system leak

• EVAP system has a leak.
• EVAP system does not op-

erate properly.

• Incorrect fuel tank vacuum relief valve
• Incorrect fuel filler cap used
• Fuel filler cap remains open or does not close.
• Foreign matter caught in fuel filler cap.
• Leakage is in line between intake manifold and 

EVAP canister purge volume control solenoid 
valve.

• Foreign matter caught in EVAP canister vent con-

trol valve.

• EVAP canister or fuel tank leakage
• EVAP purge line (pipe and rubber tube) leakage
• EVAP purge line rubber tube bent
• Loose or disconnected rubber tube
• EVAP canister vent control valve and the circuit
• EVAP canister purge volume control solenoid 

valve and the circuit

• Fuel tank temperature sensor
• O-ring of EVAP canister vent control valve is miss-

ing or damaged

• EVAP canister is saturated with water
• EVAP control system pressure sensor
• Refueling EVAP vapor cut valve
• ORVR system leakage
• Fuel level sensor and the circuit
• Foreign matter caught in EVAP canister purge vol-

ume control solenoid valve

PBIB1026E

EC-316

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0456 EVAP CONTROL SYSTEM

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

Do you have CONSULT?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

PERFORM DTC CONFIRMATION PROCEDURE-I

WITH CONSULT

1.

Turn ignition switch ON and select “EVAP DIAG READY” in “DATA MONITOR” mode with CONSULT.

2.

Start engine and wait at idle until “OFF” of “EVAP DIAG READY” changes to “ON”. 
NOTE:
It will take at most 2 hours until “OFF” of “EVAP DIAG READY” changes to “ON”.

3.

Turn ignition switch OFF and wait at least 90 minutes.
NOTE:
Never turn ignition switch ON during 90 minutes.

4.

Turn ignition switch ON and select “EVAP LEAK DIAG” in “DATA MONITOR” mode with CONSULT. 

5.

Check that “EVAP LEAK DIAG” indication.

Which is displayed on CONSULT?

CMPLT >> GO TO 3.
YET

>> Perform DTC CONFIRMATION PROCEDURE again. GO TO 1.

3.

PERFORM DTC CONFIRMATION PROCEDURE-II

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

EC-316, "Diagnosis Procedure"

.

NO

>> INSPECTION END.

4.

PERFORM DTC CONFIRMATION PROCEDURE

WITH GST

1.

Start engine and wait engine idle for at least 2 hours. 

2.

Turn ignition switch OFF and wait at least 90 minutes.
NOTE:
Never turn ignition switch ON during 90 minutes.

3.

Turn ignition switch ON.

4.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

EC-316, "Diagnosis Procedure"

.

NO

>> INSPECTION END.

Diagnosis Procedure

INFOID:0000000009651147

1.

CHECK FUEL FILLER CAP DESIGN

1.

Turn ignition switch OFF.

P0456 EVAP CONTROL SYSTEM

EC-317

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

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2.

Check for genuine NISSAN fuel filler cap design.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace with genuine NISSAN fuel filler cap. Refer to

FL-12, "Exploded View"

.

2.

CHECK FUEL FILLER CAP INSTALLATION

Check that the cap is tightened properly by rotating the cap clockwise.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Open fuel filler cap, then clean cap and fuel filler neck threads using air blower. Then retighten

until reteaching sound is heard.

3.

CHECK FUEL FILLER CAP FUNCTION

Check for air releasing sound while opening the fuel filler cap.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK FUEL TANK VACUUM RELIEF VALVE

Refer to 

EC-320, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace fuel filler cap with a genuine one. Refer to 

FL-12, "Exploded View"

.

5.

CHECK FOR EVAP LEAK

Refer to 

FL-17, "Inspection"

.

Is there any leak in EVAP line?

YES

>> Repair or replace.

NO

>> GO TO 6.

6.

CHECK EVAP CANISTER VENT CONTROL VALVE

Check the following.
• EVAP canister vent control valve is installed properly.

Refer to 

FL-16, "Exploded View"

.

• EVAP canister vent control valve.

Refer to 

EC-301, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace EVAP canister vent control valve and O-ring. Refer to 

FL-16, "Exploded View"

.

7.

CHECK IF EVAP CANISTER SATURATED WITH WATER

SEF915U

 

 

 

 

 

 

 

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