Nissan Murano. Manual - part 553

EC-322

< DTC/CIRCUIT DIAGNOSIS >

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P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

17.

CHECK IF EVAP CANISTER IS SATURATED WITH WATER

1.

Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached. Refer to 

FL-16, "Exploded View"

.

2.

Check if water will drain from the EVAP canister.

Does water drain from the EVAP canister?

YES

>> GO TO 18.

NO

>> GO TO 20.

18.

CHECK EVAP CANISTER

Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.1 kg (4.6 lb).

Is the inspection result normal?

YES

>> GO TO 20.

NO

>> GO TO 19.

19.

DETECT MALFUNCTIONING PART

Check the following.
• EVAP canister for damage
• EVAP hose between EVAP canister and vehicle frame for clogging or poor connection

>> Repair hose or replace EVAP canister. Refer to 

FL-16, "Exploded View"

.

20.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009720047

1.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

1.

Turn ignition switch OFF.

2.

Remove EVAP control system pressure sensor with its harness connector. Refer to 

FL-16, "Exploded

View"

.

Always replace O-ring with a new one.

3.

Install a vacuum pump to EVAP control system pressure sensor.

4.

Turn ignition switch ON and check output voltage between ECM terminals under the following conditions.

CAUTION:

• Always calibrate the vacuum pump gauge when using it.
• 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).

JMBIA1134GB

ECM

Applied vacuum kPa

(kg/cm

2

, psi)

Voltage

Connector

+

–

Terminal

Terminal

E16

86

(EVAP control system 

pressure sensor signal)

96

(Sensor ground)

Not applied

1.8 - 4.8 V

-26.7 (-0.272, -3.87)

2.1 to 2.5 V lower than 

above value

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-323

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Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace EVAP control system pressure sensor. Refer to 

FL-16, "Exploded View"

.

EC-324

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0456 EVAP CONTROL SYSTEM

P0456 EVAP CONTROL SYSTEM

DTC Logic

INFOID:0000000009720048

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 CONFIRMATION PROCEDURE

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0456

Evaporative emission 
control system leak

• EVAP system has a leak.
• EVAP system does not operate prop-

erly.

• 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

P0456 EVAP CONTROL SYSTEM

EC-325

< DTC/CIRCUIT DIAGNOSIS >

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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-325, "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-325, "Diagnosis Procedure"

.

NO

>> INSPECTION END.

Diagnosis Procedure

INFOID:0000000009720049

1.

CHECK FUEL FILLER CAP DESIGN

1.

Turn ignition switch OFF.