NTB15-079G

Classification:
Reference:
EC14-007G
Date:
NTB15-079G
February 4, 2022
MIL ON WITH DTC P0448
This bulletin has been amended. See AMENDMENT HISTORY on the last page.
Please discard previous versions of this bulletin.
APPLIED VEHICLES: 2005-2019 Frontier (D40)
IF YOU CONFIRM
The MIL is ON with DTC P0448 (EVAP canister vent control valve close) stored in the
ECM.
ACTION
1. Replace the EVAP canister (canister).
2. Remove the canister filter.
3. Replace the fuel filler pipe, canister drain hose, and fuel filler cap (on some model
years).
4. Erase the DTC.
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 (starting
on page 2) 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
IMPORTANT: Follow all warnings, cautions, and notes in the Electronic Service
Manual (ESM) when working on or near a fuel system and EVAP system
components, such as a fuel tank and vent control valve.
1. Remove the following parts from the vehicle:
NOTE: The fuel tank must be ¾ full or less to prevent spillage before removing the fuel
filler tube.

Fuel filler pipe

Canister with vent control valve and EVAP control system pressure sensor (pressure
sensor)

Canister drain hose(s) and filter (if equipped) that connect to the vent control valve
o If needed, refer to the ESM, sections ENGINE > ENGINE CONTROL SYSTEM >
REMOVAL AND INSTALLATION and ENGINE > FUEL SYSTEM > REMOVAL
AND INSTALLATION (as it applies), for removal procedures.
NOTE:
 It is recommended to detach the grommet from the fuel filler pipe after
detaching the fuel filler pipe from the vehicle. This makes it easier to remove
the fuel filler pipe from the vehicle.
 Cover the fuel tank’s rubber filler hose with a clean shop rag or suitable
covering once the fuel filler pipe has been detached from it.
 The new canister drain hose (drain hose) replaces the drain hose(s) and filter
(if equipped) that connect to the vent control valve. The existing drain hose(s)
and filter are not reinstalled.
NOTE: There is no need to remove the bracket or fitting to which the filter and
drain hose mount and connect to (Figure 2).
Figures 1 and 2 show the long wheel base model. The short wheel base model is similar.
Remove, do not
reuse/reinstall
No need
to remove
Under truck bed
inside left rear
wheel well area
Figure 1
Figure 2
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NTB15-079G
2. Install the new fuel filler pipe.

Before installing, cover the fuel filler pipe opening (grommet end) with a clean
shop rag or other suitable covering.

Refer to the ESM, section ENGINE > FUEL SYSTEM > REMOVAL AND
INSTALLATION > FUEL TANK > Removal and Installation, for the installation
procedure.

Make sure the grommet is positioned, as shown in Figure 3.
NOTE: It is recommended to install the grommet to the body, and then the fuel filler
pipe to the grommet.
Notch at 12 o’clock
position
Grommet
Hole at 6 o’clock
position
Figure 3
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NTB15-079G
3. Connect and route the new drain hose to the fuel filler pipe (Figures 4 and 5, as they
apply).
New drain
New
hosehose
and
and filler
fuel
fuel
filler
pipe
pipe
Bolt torque:
5.0 N•m (0.51 kg-m, 44 in lbs)
Left rear wheel
well area
Clip (white
stripe on
drain hose
hidden)
Frame
Figure 4: King Cab and long wheel base Crew Cab
New drain
New
hosehose
and
and filler
fuel
fuel
filler
pipe
pipe
Clip (white
stripe on
drain hose
hidden)
Left rear wheel
well area
Bolt torque:
5.0 N•m (0.51 kg-m, 44 in lbs)
Frame
Figure 5: Short wheel base Crew Cab
4. Reinstall the original vent control valve and pressure sensor on the new canister.
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NTB15-079G
5. Route the new drain hose and attach with clips as shown in Figures 6 and 7 (as they
apply).

The clips are listed in PARTS INFORMATION on page 7.
NOTE: The clips are to be placed on the white stripes (hidden) on the new hose,
and to the existing hose and pipe going toward the engine.

Figures 6 and 7 are viewed while looking up under the vehicle bed.
Hole
Existing
at 6
EVAP
O’clock
hoses
Clip (white
stripe on new
drain hose
hidden)
Clip (white
stripe on new
drain hose
hidden)
Pressure
sensor
connector
Front of
vehicle
New fuel
filler pipe
New drain
hose routing
Bracket for
canister
Vent control
valve connector
Figure 6: King Cab and long wheel base Crew Cab
Vent control valve
connector (hidden)
Existing
EVAP hose
Front of
vehicle
Existing
EVAP hose
New fuel
filler pipe
Pressure
sensor
connector
New canister
drain hose
Bracket for
canister
Figure 7: Short wheel base Crew Cab
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NTB15-079G
6. Connect the following:
 New drain hose to vent control valve
 Harness connectors to vent control valve and pressure sensor
 Two (2) existing EVAP hoses to canister
7. Install the canister in place.
 Make sure the hoses and their clips are routed and placed correctly.
 Canister bolt torque: 13.6 N•m (1.4 kg-m, 10 ft lbs)
Figure 8: King Cab and long wheel base Crew Cab
Figure 9: Short wheel base Crew Cab
8. Install the tire/wheel assembly. Wheel nut tightening torque: 133 N•m (14 kg-m,
98 ft-lb).
9. 2011 and older vehicles: Replace the fuel filler cap with a new one (see PARTS
INFORMATION on page 7).
10. Erase the DTC.
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NTB15-079G
PARTS INFORMATION
GRADE
DESCRIPTION
Filler Tube
Canister Drain Hose
CAP ASSY-FILLER *
Filler Tube
Canister Drain Hose
Long Wheel Base
Crew Cab &
CAP ASSY-FILLER *
King Cab
Clip
Clip
All
Canister
* 2011 and older vehicles only.
Short Wheel Base
Crew Cab
PART NUMBER
QUANTITY
17221-9BG0B
18791-9BG0A
17251-ZZ62D
17221-9BF0B
8791-9BF1A
17251-9BD0E
24220-9FP0B
24220-9FP0C
14950-EA20B
1
1
1
1
1
1
1
1
1
Short wheel base
Crew Cab filler tube
Figure 16
Long wheel base King Cab
and Crew Cab filler tube
Long wheel base
King Cab and Crew
Cab canister drain
hose and clips
Short wheel base
Crew Cab canister
drain hose
Figure 17
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NTB15-079G
CLAIMS INFORMATION
Submit a Primary Part (PP) type line claim using the following claims coding:
DESCRIPTION
PFP
OP CODE SYM DIA FRT
REPAIR FOR "MIL ON WITH DTC P0448"
(1)
FX51AA
HD
32
0.9
(1) Reference the PARTS INFORMATION Table and use the TUBE ASSY-FILLER P/N as
the PFP.
AMENDMENT HISTORY
PUBLISHED DATE
REFERENCE
DESCRIPTION
September 18, 2015
NTB15-079
Original bulletin published
February 19, 2016
NTB15-079a
Bulletin cancelled
N/A
NTB15-079b
No changes made. Bulletin not published
November 30, 2016
NTB15-079c
Steps added to apply EPT foam to seal the fuel
filler pipe, and minor changes made throughout
February 4, 2019
NTB15-079d
APPLIED VEHICLES section revised
April 24, 2020
NTB15-079e
References to vent control valve and pressure
sensor replacement removed from page 1,
page 5 and PARTS INFORMATION
January 12, 2022
NTB15-079F
Changes made throughout
February 4, 2022
NTB15-079G
Changes made to torque call-outs on page 4
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NTB15-079G