Classification:

Reference:

EC19-006a

Date:

NTB19-037a

July 29, 2020

2016-2019 TITAN; MIL ON WITH DTC P0448
AND WATER IN EVAP FILTER
This bulletin has been amended. See AMENDMENT HISTORY on the last page.
Please discard previous versions of this bulletin.

APPLIED VEHICLES:
APPLIED ENGINE:

2016-2019 Titan (A61)
VK56DE (V8 gas engine)

IF YOU CONFIRM
The MIL is ON with DTC P0448 (EVAP canister vent control valve close) stored in the ECM
and water is found in the EVAP filter, canister, or vent control valve.

ACTION
Remove and replace:




Fuel filler tube
EVAP filter
EVAP canister

Remove and reuse:



EVAP vent control valve
EVAP pressure sensor

IMPORTANT: Before any parts are removed from the vehicle, note the EVAP filter
orientation and hose routing (take a photo). Hose routing and EVAP filter orientation is
critical and varies depending on production date.
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 fuel filler tube, EVAP filter, and EVAP canister.

2.

Remove and set aside the EVAP canister vent control valve and EVAP control system
pressure sensor. These parts will be reused later in the procedure.

3.

Inspect the EPT seal material on the
service fuel filler tube.

4.



If the EPT seal material on the NEW
fuel filler tube is loose or has any
area of no contact, continue to
step 4, below.



If the EPT material is properly
secured to the NEW fuel filler tube,
continue to step 5 on page 4.

Wrap EPT foam (see PARTS
INFORMATION on page 6) around
the top of the new fuel filler tube
where indicated in Figure 2.

EPT material
has NO contact

Figure 1

Filler tube
drain box

IMPORTANT: The EPT foam must
completely seal the filler tube drain
when applied. Read steps 4a–f before
proceeding.

Drain hose
fitting

This area will
be sealed
Figure 2

a. Peel the self-adhesive protective
sheet back several inches from the
end of the EPT foam strip.
NOTE: The EPT foam is the same
on both ends.

b. Insert the EPT foam strip so it
seals tightly against the drain hose
fitting.

EPT foam strip
sealed against
drain hose fitting
Drain hose
fitting
Figure 3

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NTB19-037a

c. Wrap the top of the EPT foam strip
tightly around the drain hose fitting.

Wrap the EPT foam
strip around the
drain hose fitting

d. Peel the self-adhesive protective
sheet and then wrap the EPT foam
360 degrees around the filler tube
drain box.


Wrap the EPT foam so that its
width extends above and below
the fuel filler tube drain box.

Figure 4

Top of fuel filler
tube
NOTE: The EPT foam should fit
tightly around the top of the fuel filler
tube and the fuel filler tube drain box;
slack at the bottom will be removed
in the next step.


EPT foam
strip sealed
against drain
hose fitting

End the wrap with the EPT foam
tightly sealed against the drain
hose fitting.
Figure 5

Start here.
Work evenly
around to the
opposite side.

e. Press the EPT foam adhesive to the
fuel filler tube evenly, pushing the
slack around to the opposite side.

Figure 6
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NTB19-037a

f. Close the excessive EPT foam by
pinching the excess together as
shown in Figure 7, and then press
the remaining EPT adhesive to the
fuel filler tube.
IMPORTANT: The EPT foam must
be completely sealed at the top,
bottom, and to the drain fitting.
Confirm that no openings are
present.

Pinch EPT foam
together
Figure 7

5.

Reinstall the original EVAP canister vent control valve and EVAP control system
pressure sensor onto the new EVAP canister.
NOTE: For steps 5 through 8, refer to the Electronic Service Manual (ESM) section
ENGINE > FUEL SYSTEM > VK56VD > REMOVAL AND INSTALLATION.

6.

Install the new EVAP canister assembly onto the vehicle.

7.

Install the new fuel filler tube.

8.

Install the new EVAP filter.

NOTE: Install all parts in the same orientation and using the same routing as found
prior to disassembly. Confirm all hoses are NOT kinked or twisted. Refer to the next
page and verify the large side of the EVAP filter connects to the hose going to top of
filler tube.

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NTB19-037a

Routing PRIOR to March 2018

EVAP
filter

EVAP
filter
Figure 8

Figure 9

Routing AFTER March 2018

EVAP
filter
EVAP
filter
EVAP
filter
Figure 10

Figure 11

NOTE: Routing DURING March 2018 could have either design. Before any parts are
removed from the vehicle, note the EVAP filter orientation and hose routing (take a photo).
Hose routing and EVAP filter orientation is critical and varies depending on
production date.

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NTB19-037a

PARTS INFORMATION Table
DESCRIPTION

PART NUMBER

QUANTITY

Filler tube

(*)

1

Canister

(*)

1

Filter

14953-1LA0A

1

EPT Foam
17295-EZ30C
1
(*) Reference the Electronic Parts Catalog (EPC) to determine the part number to be
ordered.

CLAIMS INFORMATION
Submit a Primary Part (PP) type line claim using the following claims coding:
DESCRIPTION
PFP
OP CODE
SYM
DIA
FRT
Replace Tube, Filter and
(1)
FX63AA
HD
32
1.3
Canister
(1) Reference the EPC and use the Fuel Filler Tube (17221-*****) as the Primary Failed
Part (PFP).

AMENDMENT HISTORY
PUBLISHED DATE REFERENCE
April 23, 2019

July 29, 2020

DESCRIPTION

NTB19-037

Original bulletin published

NTB19-037a

References to vent control valve and pressure
sensor replacement removed from page 1, page 2,
page 4, PARTS INFORMATION, and CLAIMS
INFORMATION

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NTB19-037a