ITB17-042

Classification:
Reference:
Date:
EC16-035
ITB17-042
July 21, 2017
INFINITI; DTC P0456 CAUSED BY EVAP
LEAK AT VENT CONTROL VALVE O-RING
APPLIED VEHICLES: 2017-2018 QX30 (H15)
2014-2017 QX50 (J50)
2016-2017 QX60 and QX60 Hybrid (L50)
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 page 2.
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.
2. Connect Essential Tool J-42909 to the EVAP service port.
3. Using Active Test, close the vent control valve.
4. Apply pressure using J-42909 until the bar graph reaches about halfway.
5. Monitor the bar graph for 10 minutes.
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ITB17-042
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
Where vent control valve
mounts in canister
Figure 4
Canister
This surface must
be clean all around
Make sure all edges
are not broken
Figure 5
Figure 6
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ITB17-042
When fully seated (no
gaps), O-ring is not
twisted or rolled over
O-ring
No gap all
around
Figure 7
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
Replace Vent
Control Valve
O-Ring
MODEL
PFP
OP CODE
SYM
DIA
QX50
QX60 and QX60 Hybrid
16618-JF00A
QX30
FX57AA
HD
32
FRT
0.4
0.5
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ITB17-042