SB-12-J-002-A Service Bulletin/Repair Instructions

SB-10044167-2374
BULLETIN NUMBER:

SB12-J-002A
IMPORTANT SERVICE

INFORMATION FOR:

9

9

9

9

9
SERVICE MANAGER

SERVICE ADVISOR

TECHNICIAN

PARTS DEPARTMENT

WARRANTY PERSONNEL
ISSUE DATE:

MARCH 2012

GROUP:

ENGINE
ILLUMINATED CHECK ENGINE MALFUNCTION INDICATOR LIGHT (DTC P0087) –

SUPPLY PUMP BOLT W/FILTER RESTRICTION

AFFECTED VEHICLES

ƒ
2011-2013MY Isuzu N-Series

Equipped with 5.2L 4HK1 Diesel Engine
This bulletin supersedes SB12-J-002. This bulletin is being revised to update

Model Years. Please disregard bulletin SB12-J-002.

INFORMATION

Some customers may experience various drivability concerns along with an illuminated

Check Engine Malfunction Indicator Light (MIL) and reduced engine vehicle speed.

Technician diagnosis finds DTC P0087.

In some cases, normal diagnosis may not identify the root cause for setting this DTC. If

normal diagnosis cannot determine the cause of P0087, follow the below service

procedure information to identify other root cause(s).

SERVICE PROCEDURE

Step
Description
1
Download Health Report Data
2
Check the following for an abnormal condition:

•

•

•

•

•
Fuel level

Air in the fuel lines

Fuel rail pressure actual vs. desired

Fuel rail pressure sensor zero

Fuel supply pump low side pressure
Value
Yes
No
_
Go to

Step 2
_
Problem

Resolved
Go to

Step 3
Go to

Step 5
Go to

Step 4
Was a problem found and corrected?

3
Check that the fuel supply pump low side fuel

pressure at 2200 rpm.

Is the pressure below the specified value?
116 psi

(800 kPa)
Step
Description
4
Check the following to parts for contamination:

•
Fuel Sedimenter filter
•
Eye Bolt (see figure 1)
Value
Yes
No
_
Go to

Step 5
Go to

Step 6
_
Go to

Step 6
_
Go to

Step 7
Was contamination/rust found in either part?

5
The fuel system has been contaminated.

Replace the following parts:

•
Fuel Sedimenter filter
•
Main fuel filter
•
Eye Bolt (see figure 1)
•
Supply Pump Bolt w/filter* (see figure

2)
Find the source of the contamination. Drain

the fuel tank, inspect the fuel tank pick up

tube, and the fuel gauge sending unit.

Replace the following parts as necessary:

•
Fuel tank pick up tube
•
Fuel gauge sending unit
•
Drain plug
Was the repair completed?

6
Reprogram the ECM if the calibration ID is

lower than the one listed in the reference chart

provided in this bulletin.

Road test the vehicle to confirm the DTC does

not reset.
Problem

Resolved
Did the code reset?

7
Replace the Fuel Rail Pressure (FRP)

Regulator/Suction Control Valve (SCV).

Road test the vehicle to confirm the DTC does

not reset.
_
Contact

Problem

Technical

Resolved

Assistance
Did the code reset?
* NOTE: It is necessary to remove Supply Pump to change Supply Pump Bolt

with filter.

2
Calibration ID numbers for reference.

Model Year
2011
2012
Trans.
GVW
Calibration ID
AUTO
14,500 lb GVWR
98202019 – or Higher
AUTO
17,950 / 19,500 lb GVWR
98202020 – or Higher
MANUAL
14,500 lb GVWR
98201976 – or Higher
MANUAL
17,950 / 19,500 lb GVWR
98201977 – or Higher
AUTO
14,500 lb GVWR
98201978 – or Higher
AUTO
17,950 / 19,500 lb GVWR
98201979 – or Higher
MANUAL
14,500 lb GVWR
98201980 – or Higher
MANUAL
17,950 / 19,500 lb GVWR
98201981 – or Higher
Back of Supply Pump Side
Figure 1 - Eye Bolt
Figure 2 - Supply Pump Bolt w/Filter location
Torque the new eye bolt to 17.2 Nm (12 lb ft)
Torque the hex nut to 17.2 Nm (12 lb ft)
PARTS INFORMATION

The following new parts are available from AIPDN.

Part Number

8-98200-752-0

8-98204-986-0

8-98201-967-0

8-98202-438-0

8-98203-548-0

8-98202-438-0

8-98203-549-0
Description

Eye Bolt

Supply Pump Bolt w/Filter

Pipe Assembly

Drain Plug

Tank (Sending) Unit

Drain Plug

Tank (Sending) Unit
Qty

1

1

1

1

1

1

1
Comment
Center Tank

Center Tank

Center Tank

Side Tank

Side Tank
3
WARRANTY INFORMATION

For vehicles covered under the basic warranty, the below labor operation codes are

provided to better identify this repair. Please select the appropriate labor operation

based on the repair.

Labor

Code

J8004
Labor

Time
Comments
Supply Pump Bolt w/Filter, Replace
1.9
Includes diagnosis
Add: Fuel Tank Pick Up Pipe and Tank

(Sending) Unit, Replace
1.6
Add: ECM Reprogramming
0.3
Add: Fuel Rail Pressure (FRP)

Regulator/Suction Control Valve (SCV),

Replace
0.2
Description
4

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Last update on 2026-05-12 / Affiliate links / Images from Amazon Product Advertising API

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