Classification:

Reference:

Date:

EC16-035b

ITB17-042b

January 29, 2019

INFINITI; 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: 2011-2012 G25 Sedan (V36)
2007-2008 G35 Sedan (V36)
2009-2013 G37 Convertible (V36)
2008-2013 G37 Coupe (V36)
2009 G37 Sedan (V36)
2006-2010 M45/M35 (Y50)
2011-2013 M37/M56 (Y51)
2004-2010 QX56 (JA60)
2011-2013 QX56 (Z62)

2015 Q40 (V36)
2014-2019 Q50 (V37)
2014-2018 Q50 Hybrid (V37)
2014-2015 Q60 Convertible (V36)
2014-2019 Q60 Coupe (V36)
2014-2019 Q70 (Y51)
2014-2018 Q70 Hybrid (Y51)
2017-2019 QX30 (H15)
2014-2019 QX50 (J50)
2014-2019 QX60 (L50)
2014-2019 QX60 Hybrid (L50)
2014-2019 QX80 (Z62)

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 ITB13-044).




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.
Infiniti 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 Infiniti retailer 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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ITB17-042b

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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ITB17-042b

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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ITB17-042b

Models With a Service Port
(2017 and older)

Connect essential tool J-42909
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)

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ITB17-042b

Models Without a Service Port
(QX30 and 2018 and Newer)

Disconnect the EVAP line at the
purge control valve.
Connect essential tool J-42909 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)

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ITB17-042b

PARTS INFORMATION
DESCRIPTION

P/N

QUANTITY

SEAL O-RING

16618-JF00A

1

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

MODEL

PFP

OP CODE

SYM

DIA

FRT

M35, M45 (Y50)
G25, G35, G37 (V36)

0.3

Q40, Q60 (V36)
Q50 Hybrid (V37)
Q50, Q60 (V37)
M37, M56, M Hybrid (Y51)
Q70, Q70 Hybrid (Y51)
EX35, EX37 (J50)
Replace Vent
QX50 (J50)
16618-JF00A
Control Valve
O-Ring
FX35, FX37, FX45, FX50 (S51)

FX57AA

HD

32

0.4

QX70 (S51)
JX35 (L50)
QX60 (L50), Hybrid
QX50 (J55)
QX56 (JA60)

0.5

QX56 (Z62)
QX80 (Z62)

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ITB17-042b

AMENDMENT HISTORY
PUBLISHED DATE

REFERENCE

DESCRIPTION

July 21, 2017

ITB17-042

Original bulletin published

November 16, 2018

ITB17-042a

The APPLIED VEHICLES and CLAIMS INFORMATION
sections have been updated

January 29, 2019

ITB17-042b

The APPLIED VEHICLES section has been updated

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ITB17-042b