IK1201063 ­ SPN 3055 FMI 15 FRP Below Minimum Troubleshooting

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Countries:

CANADA, COLOMBIA, UNITED STATES Document ID: IK1201063

Availability:

ISIS, FleetISIS

Revision:

8

Major System:

ENGINES

Created:

1/29/2014

Current Language: English

Last Modified: 10/29/2014

Other Languages: NONE

Author:

Viewed:

Amber Chapman

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Title : SPN 3055 FMI 15 FRP Below Minimum Troubleshooting
Applies To : EPA 2010 MaxxForce 11 / 13 /15 and N13

CHANGE LOG
2014/10/16 ­ Added CPA tool diagnostics. Added SRTs.
2014/10/06 - Added the 15L MaxxForce information.
2014/07/22 ­ Revised SRT links and added SRT for Fuel Filter replacement.
2014/06/17 ­ Corrected parts tables (decription and number) for the valve referred to in step 12
2014/05/19 - Eliminated Fuel Dead test.

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DESCRIPTION
This document contains the steps to be taken to diagnose and correct a SPN 3055 FMI 15 FRP Below Minimum with Maximum Command. This fault code
sets when the Engine Control Module (ECM) detects Fuel Rail Pressure (FRP) is below minimum when the maximum is commanded.

SYMPTOMS
Diagnostic Trouble Codes & Dashboard Indicator Lights:
DTC/Light

Description

SPN 3055 FMI 15

FRP Below Minimum with Maximum Command

Fault Code Entry Conditions:
Condition /
Setting Criteria
Description
FRP
Governor
deviation
above
maximum
limit

Time
Required

Enable Conditions / Values

Rail pressure governor error > 725 PSI at 600­
750 RPM

•
•
•
•

Key ON
Metering unit flow > function engine speed (41500-55000 mm3/s)
Engine mode normal
Engine speed > 0 rpm OR Fuel Rail Pressure > 90000 kpa for more than 20
engine revolutions
• Metering unit flow < 327670 mm3/sec

10
seconds

Malfunction Indicator Lamp (MIL) Reaction
• MIL will illuminate when this fault is detected during two consecutive drive cycles.
Possible Causes
•
•
•
•
•
•
•
•
•
•

Restricted fuel supply
Restricted engine mounted secondary fuel filter
Failed High-pressure fuel pump
Fuel Rail Pressure (FRP) sensor or circuit fault
Aerated fuel delivery
Fuel leaks
Low fuel level
Internal leak in high­pressure fuel system
Leaking FRP relief valve
Stuck or sticking FPCV (not likely)

SPECIAL TOOLS
Tool Description

Tool Number

Fuel Priming Tool

12­922­01

Clean Fuel Source Tool

15­637­01

Comments

Instructions

Only if necessary

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11/3/2014

IK1201063 ­ SPN 3055 FMI 15 FRP Below Minimum Troubleshooting

Compucheck Fitting

ZTSE4526

For fuel restriction or fuel return
pressure test, if necessary

Pressure Test Kit

ZTSE4409

For fuel restriction test, if necessary

Fuel Pressure Gauge

ZTSE4681

For fuel return pressure test, if
necessary

Fuel Inlet Restriction/Aeration
Tool

ZTSE4886

For fuel restriction test, aeration test,
or fuel return pressure test, if
necessary

Fuel Block Off Tool

ZTSE4905

For fuel restriction test and aeration
test, if necessary

Fuel Line Coupler

ZTSE4906

Page 2 of 6

EZ-Tech with CPA software
version 5.0.0.1 or higher

CPA Tool

OE-11178 or 12-999-01- Tool Letter TL2900079
01 (with blue rubber sides) 4328032R2

CPA Extension Harness

0000062361

4 required

CPA banana jack breakout

12-999-01-06

4 required

Link to Tools Resource Center

SERVICE PARTS INFORMATION
Quantity
Required

Kit Description

Part Number

High pressure fuel pump Kit 11L/13L/N13

3007641C93

1

If required

High pressure fuel pump Kit 15L

3014489C91

1

If required

Kit, Fuel Filter 11L/13L Secondary engine
mounted

3007451C91

1

If required

Kit, Fuel Filter 13L primary

See Parts
Catalog

1

If required, Restriction Test Point

Kit, Fuel Primer Pump and Strainer 13L

3004477C92

1

If required, Restriction Test Point
or Aeration Test

Rail Assm, Fuel

3006765C91

If required

Injector

See Parts
Catalog

If required, FRP return flow test
part 1

Return Line HPFP to fuel tank

3005913C1

1

Notes

If required, Fuel Return Pressure
test

DIAGNOSTIC STEPS
Step Action

Decision
Yes. Go to Step 2.

Check recent vehicle history noting fuel system repairs.
Has the vehicle run issue free since the last fuel system service?

1

No. Inspect for leaks and properly
prime the fuel system. Go to Step
2.

Step Action
2

Decision
Yes. Go to Step 3.

Check for associated faults. Using Electronic Service Tool (EST) with ServiceMaxx™ software,
check Diagnostic Trouble Code (DTC) list for SPN 157 FMI 3, 4, 20, and 21 (FRP) or SPN 633 FMI
3, 4, and 5 (FPCV).

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11/3/2014

IK1201063 ­ SPN 3055 FMI 15 FRP Below Minimum Troubleshooting

Is the EST DTC list free of SPN 157 FMI 3, 4, 20, and 21, and SPN 633 FMI 3, 4, and 5?

Page 3 of 6

No. Repair other fault
codes, first. See health report for
link to diagnostics.
If the code is still present, go to
Step 3.

Step Action

Decision
Yes. Go to Step 4.

Check that the engine cranks at a minimum of 130 RPM.
Does the engine crank at a minimum of 130 RPM?

3

No. Repair low cranking speed.
Recheck for Fault Codes.

Step Action

Decision
Yes. Go to Step 5.

Verify that engine starts. Crank engine for maximum of 20 seconds. If engine does not start, wait 2
minutes and try again.
Does engine start and maintain idle?

4

No. Go to SPN 3055 FMI 1 (IKnow
1201062)

Step Action

Decision
Yes. Go to Step 7.

Perform High-pressure Pump Inlet Pressure Test.
Does the fuel pressure gauge read > 30 PSI?

5

No. Go to Step 6.

Step Action

Decision

Remove and inspect secondary engine-mounted fuel filter.

Yes. Replace Secondary enginemounted Fuel Filter and retest for
3055­15 code.

Is filter plugged?

6

No. Replace the high pressure fuel
pump.
Make sure to use fuel priming tool
(12-922-01).
Go to Step 13.

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11/3/2014

IK1201063 ­ SPN 3055 FMI 15 FRP Below Minimum Troubleshooting

Step Action

Page 4 of 6

Decision
Yes. Go to Step 8.

Check for aeration in low pressure fuel system.
Perform Fuel Aeration Test.

7
Is fuel system free from aeration?

Step Action

No. Repair aeration in low
pressure fuel system, according to
Fuel Aeration Test. Recheck for
Fault Codes.

Decision
Yes. Go to Step 9.

Check for restriction in low pressure fuel system.
Perform Fuel Restriction Test.

8
Is the fuel system free of restriction?

Step Action

No. Repair restriction in low
pressure fuel system, according to
Fuel Restriction Test. Recheck for
Fault Codes.

Decision
Yes. Go to Step 10.

Check for fuel return. Perform Fuel Rail Pressure (FRP) Return Flow Test part 1. Disconnect fuel
drain tube assembly at rear of cylinder head. Connect High Pressure Return Line Tester
ZTSE4887 to cylinder head and route other end to diesel fuel container. Start engine and monitor
fuel return from High Pressure Return Line Tester ZTSE4887 for 60 seconds at low idle.

9

Is the fuel volume < 60 ml?