Classification:

Reference:

EC16-034b

Date:

NTB17-082b

January 29, 2019

NISSAN; DTC P0456 CAUSED BY EVAP
LEAK AT VENT CONTROL VALVE O-RING
This bulletin has been amended. See Amendment History on the last page.
Please discard previous versions of this bulletin.

APPLIED VEHICLES:

All model year 2008 and newer Nissan vehicles
except LEAF and Titan XD with V8 diesel engine

IF YOU CONFIRM
The MIL is ON in an APPLIED VEHICLE with DTC P0456 (EVAP VERY SML LEAK)
AND


DTC P0456 is not caused by a loose fuel fill cap (refer to NTB13-097).



An EVAP leak has been detected where the vent control valve mounts to the
canister.



The vent control valve O-ring seal is determined to be the cause.

ACTION
1. DO NOT REPLACE the vent control valve.
2. Replace the vent control valve O-ring seal (O-ring).


Refer to SERVICE PROCEDURE, on the next page.

IMPORTANT: The purpose of ACTION, above, is to give you a quick idea of the work you
will be performing. You MUST closely follow the entire SERVICE PROCEDURE as it
contains information that is essential to successfully completing this repair.
Nissan Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are
properly trained individuals who have the equipment, tools, safety instruction, and know-how to do a job
properly and safely. NOTE: If you believe that a described condition may apply to a particular vehicle, DO
NOT assume that it does. See your Nissan dealer to determine if this applies to your vehicle.

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SERVICE PROCEDURE
1. Replace the O-ring.


To access the O-ring, refer to the appropriate section in the Electronic Service
Manual (ESM) of the APPLIED VEHICLE for vent control valve removal and
installation.



This O-ring is now available separately (see PARTS INFORMATION).



When installing, do not add any lubrication to the O-ring.



Seat the O-ring all the way down as shown on page 4, Figure 7.
 Having the O-ring seated all the way down will assure it is not twisted or rolled
over.



Refer to the pictures on pages 3 and 4 for additional installation information.

CAUTION:
 Make sure the surfaces that the O-ring comes in contact with are clean.
 When installed, make sure the O-ring is not twisted or rolled over.


Verify the repair is complete by checking for leaks with a “smoke” leak detection
machine or CONSULT-III plus (C-III plus).
 If a “smoke” leak detection machine is used, follow the manufacturer’s operating
instructions.
 If C-III plus is used:
1. Confirm the fuel filler cap is secure.



Vehicles with a service port see page 5.
Vehicles without a service port see page 6.

2. Using Active Test, close the vent control valve.
3. Apply pressure using J-42909 until the bar graph reaches about halfway.
4. Monitor the bar graph for 10 minutes.

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NTB17-082b

NG: Dirty O-ring surface

Vent control valve
Figure 1

Figure 2

OK: Clean O-ring surface

Make sure all edges
are not broken
Figure 3

Figure 4

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NTB17-082b

Where vent control valve
mounts in canister

This surface must
be clean all around
Canister

Make sure all edges
are not broken
Figure 5

Figure 6

When fully seated
(no gaps), O-ring
is not twisted or
rolled over

O-ring

No gap all
around

Figure 7

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NTB17-082b

Models with a Service Port
(2017 and older)

Connect essential tool J42909 to the service port
and perform EVAP system
leak check.
There is no need to
perform a separate leak
check of the purge control
valve.

Figure 8

EVAP System Basic Operation


Fuel vapor flows from fuel tank into canister (light blue area)



Vapor flows from canister through purge control valve (red line)



Fresh air flows into canister (green line)

5/8

NTB17-082b

Models without a Service Port
(2018 and Newer)

Disconnect the EVAP line at
the purge control valve.
Connect essential tool J42909 to the EVAP line and
perform EVAP system leak
check.
Use special tool J-42909 to
also perform a separate leak
check of the purge control
valve

Figure 9
EVAP System Basic Operation


Fuel vapor flows from fuel tank into canister (light blue area)



Vapor flows from canister through purge control valve (red line)



Fresh air flows into canister (green line)

PARTS INFORMATION
DESCRIPTION

P/N

QUANTITY

SEAL O-RING

16618-JF00A

1

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NTB17-082b

CLAIMS INFORMATION
Submit a Primary Part (PP) line claim using the following claims coding:
DESCRIPTION

MODEL

PFP

350Z Coupe and
Roadster (Z33)
Cube (Z12)
GTR (R35)
Juke (F15)
Murano (Z51)
Quest (E52)
Rogue (S35)
Rogue Sport (J11)
Altima (L33)
Frontier (D40)
Kicks (P15)
Micra (K13)
Replace Vent
Maxima (A36)
Control Valve
16618-JF00A
Murano (Z52)
O-Ring
NV 1500/2500/
3500/Passenger (F80)
NV200 (M20) and TAXI
Pathfinder (R52)
Quest (V42)
Rogue (T32)
Sentra (B16)
Sentra (B17)
Titan (A60)
Titan and
Titan XD (A61)
Versa NOTE (E12)
Versa (N17)

7/8

OP CODE SYM

DIA

FRT

0.3

FX57AA

HD

32

0.4

NTB17-082b

CLAIMS INFORMATION (continued)
DESCRIPTION

Replace Vent
Control Valve
O-Ring

MODEL
370Z Couple and
Roadster (Z34)
Altima Sedan and
Coupe (L32)
Armada (TA60)
Armada (Y62)
Maxima (A35)
Versa (C11)
Altima (L34)
Pathfinder (R51)
Xterra (N50)

PFP

OP CODE SYM

DIA

FRT

0.5
16618-JF00A

FX57AA

HD

32

0.7

AMENDMENT HISTORY
PUBLISHED DATE

REFERENCE

July 21, 2017

NTB17-082

August 21, 2017

NTB17-082a

January 29, 2019

NTB17-082b

DESCRIPTION
Original bulletin published
The APPLIED VEHICLES and CLAIMS
INFORMATION sections have been updated
The APPLIED VEHICLES section has been
updated

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NTB17-082b