Service Bulletin
Applies To:

13-022

1998–2003 Civic GX – ALL with SCI CNG Fuel Tank Assembly
2004–2011 Civic GX – ALL
2012–2015 Civic Natural Gas – ALL

March 5, 2020

CNG Fuel Tank Solenoid Valve Replacement Process
Supersedes 13-022, dated February 10, 2017, See REVISION SUMMARY
REVISION SUMMARY
This bulletin has been extensively revised. American
Honda recommends reviewing the entire bulletin.
BACKGROUND
For vehicles with SCI compressed natural gas
(CNG) fuel tanks, Honda is no longer replacing the
fuel tank and solenoid valve altogether. If you
replace the fuel tank solenoid valve, you must now
install the original fuel tank.
All SCI aluminum fuel tanks are eligible for fuel
tank solenoid replacement.
This service bulletin does not apply to Lincoln
Composite fuel tanks, which must still be
replaced as a remanufactured assembly. (Refer
to service bulletin 01-005, CNG Fuel Tank
Assembly Exchange Program.) Check the fuel
tank label to confirm that the tank is from SCI.
REPAIR POLICY
Repairs on CNG fuel tank assemblies may require
the installation of a new CNG fuel tank solenoid
valve assembly.

PARTS INFORMATION
NOTE: To help clarify where new parts are used in
the REPAIR PROCEDURE, the new part is listed in
the applicable repair step with a > symbol.
Front Upper Turn Clip (2 required):
P/N 91561-SJD-003
Fuel Line Connector O-Ring (1/4 in. Port Side)
(2 required):
P/N 91066-S1G-A01
Fuel Line Connector O-Ring (3/8 in. Port Side):
P/N 91066-S1G-B01
Fuel Line Connector O-Ring (1/4 in.)(5 required):
P/N 91067-S1G-A01
Fuel Line Connector O-Ring (3/8 in.)(2 required):
P/N 91067-S1G-B01
Fuel Tank Solenoid Valve O-Ring:
P/N 17574-PDN-A01
NOTE: The fuel tank solenoid valve should be
replaced by a Honda-certified natural gas
dealer.
REQUIRED MATERIALS
Contact / Brake Cleaner: P/N 08700-9201
Nitrogen Bottle 240 cu ft (filled to 1,500 psi):
(commercially available)
PAG Oil: P/N 38897-P13-A01AH
Plastic Wire Tie: (commercially available)
Snoop Liquid Leak Detector:
(order from swagelok.com)

ª2020 American Honda Motor Co., Inc. – All Rights Reserved

14159 Version 5

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CUSTOMER INFORMATION: The information in this bulletin is intended for use only by skilled technicians who have the proper tools,
equipment, and training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,”
and you should not assume this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this
information applies, contact an authorized Honda automobile dealer.

TOOL INFORMATION
CNG Tank Valve Replacement Kit: T/N
HONCNGKIT Kit contains these items:
Knurled Threaded Handle
Mini Gator Clamp
Molykote 55 grease
Negative/Positive Gator Clamp
Pin Spanner
Receptacle Gauge
Steel Braided Line
Yellow Paint Marker
Ground Wire
Manual Override Vent Tool
Vent Tube

REPAIR PROCEDURE

Compressed natural gas is flammable and highly
explosive. You could be killed or seriously injured if
leaking natural gas is ignited.
Stop the engine, and keep heat, sparks and flames
away.
Safety glasses need to be worn during these
operations.
When venting fuel, follow local regulations concerning
venting natural gas. Consult your local fire and
environmental authorities for specific regu- lations.
This procedure should be done outside, in a well
ventilated area, or in a properly equipped NGV shop.
Check for a gas leak if there is an odor coming from
the vehicle. Compressed natural gas can only be
smelled, not seen.

Available for loan from the Honda Tool and
Equipment Program at 888-424-6857.
Vernier Caliper: (commercially available)
WARRANTY CLAIM INFORMATION
The normal warranty applies.
OP#

Description

3101S4

Remove and install the CNG fuel
tank.

A Replace CNG fuel tank solenoid valve.

FRT

5.6
1.0

The following service information procedures
have been used in full or in part within this
service bulletin. For more detail on these
procedures, and torque specifications for some
components, refer to the applicable service
information.
• Fuel Pressure Relieving
• Fuel Tank Removal and Installation

Failed Part:

16750-RNE-A01

Defect Code:

03217

• Rear Floor Undercover Removal and Installation

Symptom Code:

09001

Skill Level:

Repair Technician
(Honda NGV
Certified)

• Rear Floor Upper Crossmember Gusset
Removal and Installation
• C-Pillar Trim Removal and Installation

DIAGNOSIS
NOTE: You must be a Honda NGV-Certified
Technician to do the fuel tank solenoid valve
inspection or replacement work.
Follow the normal troubleshooting procedures
found in the service information. If your
troubleshooting leads you to suspect the
solenoid valve assembly is faulty, go to REPAIR
PROCEDURE.

• Fuel Joint Block Removal and Installation

• Rear Seat Belt Removal and Installation
• Rear Seat-back Removal and Installation
• Rear Floor Undercover Removal and Installation
Relieve the Fuel Tank Pressure
Vent the fuel pressure from the fuel tank with the
CNG Vent Tool set. Refer to the Fuel Pressure
Relieving procedure in the service information.
NOTE:
• Using the tank venting tool to relieve tank
pressure makes the solenoid valve unusable,
and it must be replaced with a new valve.
• Do not use the fuel stem to relieve pressure
on the fuel receptacle line. If the fuel stem is
removed, it must be replaced with a new
one.

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13-022

Remove the Fuel Tank Assembly from the
Vehicle
1. Remove the fuel tank assembly from the
vehicle as described in the applicable service
information.

Remove the Tank Solenoid Valve
1. Loosen the large seal boot clamp. Pull the
clamp and the vent boot aside far enough
to be able to disconnect the 2-pin connector
from the tank solenoid valve pigtail harness.
SUBHARNESS
CONNECTOR

2. Position the four rubber blocks from the CNG
tank valve replacement kit under the fuel tank
frame and side rail. The joint block should be
suspended above the ground.

SEAL BOOT
CLAMP

JOINT
BLOCK

BLOCKS

FUEL TANK
FRAME

3. Use the large plastic wire tie to support the fuel
joint block lines up to the frame. Make sure the
joint block bracket is attached. Leave the wire
tie in place until the lines are attached to the
new solenoid valve.
NOTE: Do not overtighten the wire tie. This will
cause pressure on the fuel lines and may
cause problems aligning them to the new fuel
tank valve.

SUBHARNESS
CLIP

LARGE
SEAL BOOT

JOINT
BLOCK
BRACKET

JOINT
BLOCK

13-022

WIRE
TIE

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2. Fold back the seal boot to access the fuel
lines.
NOTE: Use an elastic cord to hold the seal
boot out of the way.
3. Loosen and remove the three fuel line nuts
from the connector fittings. Remove the Orings. Support the line connector on the valve
with a wrench while loosening the line nut.
NOTE: Always use two wrenches when
removing or installing the fuel line nuts.
FUEL LINE

6. Note the position of the line connectors.
Remove the three fuel line connectors.
NOTE: There are two smaller fittings. The one
with the shorter threads goes into the middle
position of the solenoid valve for the pressure
relief valve.
7. Coil the pigtail harness on the end of the
solenoid valve, then position the 2.5-inch
socket over it, making sure the pigtail fits
inside the socket.

SOLENOID
VALVE
PIGTAIL
HARNESS

O-RING

(Replace.)
COILED
PIGTAIL
HARNESS

2.5-INCH
SOCKET

FUEL LINES

4. Disconnect the solenoid valve pigtail harness
from the backing plate clip.
5. Gently pull the fuel lines back slightly, so you
can remove the fuel line connectors.
NOTE: Be careful not to bend the fuel lines
because they will not align properly if bent.

O-RINGS
FUEL LINE
CONNECTORS

(Replace.)

(Retain.)

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13-022

8. Use the breaker bar supplied in the kit to
loosen the solenoid valve.

If the valve does not turn easily, the
tank has pressure in it. Stop and do the
tank venting procedure again. Do not
proceed until there is no pressure in the
tank and the valve turns easily.
BREAKER BAR

10. Install the fuel tank stand support tool and the
threaded tipping handle from the kit. With the
help of an assistant, stand the tank on its end
and allow it to drain for 20 minutes. Place a
clean and empty drain pan underneath the
tank to catch any liquid as proof of
contaminated CNG.
NOTE: If any liquid is found in the tank, replace
both filters. Any water in the fuel tank indicates
fuel contamination, and warranty consideration
would not apply. Discuss your findings with
your DPSM or Tech Line.
NUT

FUEL TANK
STAND
TIP TOOL

TIPPING
HANDLE

9. Remove the solenoid valve by hand, and
remove the O-ring.

O-RING

(Replace.)
SOLENOID VALVE

MOISTURE
FROM TANK

11. Return the tank to the horizontal position.

13-022

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Evaluate the New Replacement Solenoid
Valve Condition Before Installing
1. Visually inspect the fuel tank solenoid valve
for damage to the threaded area, the O-ring
seat area, the wiring, and the connector.
> Fuel Tank Solenoid Valve

4. Momentarily connect the test harness to an
automobile battery or booster pack, and
electrically activate the solenoid valve.
• If the solenoid valve works properly and you
can see the solenoid plunger operate, go to
step 5.
• If the solenoid valve does not work
properly, obtain a new solenoid valve
and retest again.
After confirming proper operation, the valve is ready for
installation.

Inspect wiring.

Inspect connector.
TEST HARNESS

Inspect threads.
Inspect O-ring seat.
Inspect wiring.

2. Connect the solenoid valve test harness
from the kit to the solenoid valve 2-pin
connector.

SOLENOID
PLUNGER
INSPECTION
HOLE

3. Using a DVOM, test the resistance of the
new solenoid valve. It should be 18 to 21
ohms.
• If the solenoid valve is within specification,
go to step 4.
• If the solenoid valve is not within
specification, obtain a new solenoid valve
and test again.

BATTERY

TEST HARNESS

DVOM

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13-022

Install the Solenoid Valve
1. Use contact brake cleaner to clean the
solenoid valve sealing surfaces on the valve
and the tank.
NOTE: Make sure there are no rag or paper
towel fibers left on any sealing surfaces.
2. Lubricate the new O-ring using only
Molykote 55 grease included with the CNG
valve replacement kit, and install the O-ring
on the replacement solenoid valve.

5. Set the torque wrench from the kit to 339
N•m (250 lb-ft), and torque the solenoid valve
while an assistant holds down the side of the
tank frame.
NOTE: Be careful not to bend the fuel lines.
Torque
solenoid
valve to
339 N.m
(250 lb-ft)

NOTE: Use only Molykote 55 grease for this
process. Do not use any other type of
grease or lubricant.
> Fuel Tank Solenoid Valve O-Ring

NEW O-RING

(Lubricate.)

3. Hand-thread the solenoid valve into the
tank, making sure the O-ring seats
properly in its groove.

Check the Solenoid Valve Assembly for Leaks
NOTE: This leak check is a very important
process done with nitrogen, a non-flammable
gas. This eliminates the possibility of any fire
danger from a leak between the tank and the
new solenoid valve.
1. Install the blue leak check adapter fitting from
the kit in the solenoid valve’s receptacle port,
and make sure the O-ring is installed. Torque
the leak check adapter to 8 N·m (20 in-lb).
LEAK
CHECK
ADAPTER