NHTSA ID Number: 10115550
Manufacturer Communication Number: IK1201159
TSB/Document Date: 2017-08-16
Summary
SPN 3251 FMI 2 & 21 DPFDP above or below desired level diagnostics
IK1201159 SPN 3251 FMI 2 & 21 DPFDP above or below desired level diagnostics
Countries:
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BAHAMAS, BOLIVIA, BELIZE, CANADA, CHILE, TAIWAN,
COLOMBIA, COSTA RICA, DOMINICAN REPUBLIC,
ECUADOR, EL SALVADOR, TRINIDAD AND TOBAGO,
Document
UNITED STATES, URUGUAY, VENEZUELA, MEXICO,
IK1201159
ID:
ARUBA, NICARAGUA, PERU, Curaçao, GUAM,
GUATEMALA, GUYANA, HAITI, HONDURAS, JAMAICA,
KOREA, SOUTH KOREA, PANAMA
Availability: ISIS, Bus ISIS, FleetISIS, Body Builder
Revision: 5
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Created:
7/22/2014
Last
Modified:
10/23/2015
Author:
Alex
Buzgau
7598
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Title : SPN 3251 FMI 2 & 21 DPFDP above or below desired level diagnostics
Applies To : 2010 + MaxxForce DT, 9, 10, N9 & N10 (ESN 3,300,000 and later)
CHANGE LOG
NOTE: DO NOT delete this Change Log. If this iKNow Article is being revised, please type in the text box below what has changed in the
article. The change log is meant for Dealers to be able to see what has updated/changed in the article.
Dealers: Please refer to the change log text box below for recent changes to this article:
10/23/2015 - Updated warranty information section.
6/1/2015 Author updated for feedback purposes.
12/22/2014 - Steps updated for clarification.
10/21/2014 - Snap Throttle note added.
8/21/2014 - Initial Article Release
DESCRIPTION
Supplemental diagnostics for fault code SPN 3251 FMI 2 & 21 DPFDP above or below desired level
SYMPTOM(s)
Diagnostic Trouble Code(s) & Dashboard Indicator Light(s):
SPN 3251 FMI 2 & 21 DPFDP above or below desired level (active, inactive or pending)
Customer Complaint(s):
Frequent regens
- Engine warning light
Unable to regen
- Black smoke
DIAGNOSTIC STEP(s)
Step Action
Decision
A: Yes repair and retest for the fault.
1
B: No and high DPFDP is suspected due to differential
Inspect the DPFDP tubes and hoses for plugging,
pressure spikes proceed to step 2.
kinks or cracks are any defects noted?
C: No and low DPFDP is suspected due to rapid drops
in differential pressure proceed to step 3.
Step Action
2
Do a DPF reset in Service Maxx (See figure 1) ->parameters>CDPF_reset> yes>program
engine cycle the key off, then hold at WOT for 5
min, then road test. Did the fault return?
Decision
Yes: Perform symptom 3 (MEDIUM DUTY): SPN 3719
OR SPN 3936 ACTIVE ONLY OR FREQUENT
REGENS (MORE THAN ONE PARKED REGEN PER
DAY) in the Aftertreatment Diagnostic Manual
0000003081.
No: Repair completed.
Step Action
Decision
3
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IK1201159 SPN 3251 FMI 2 & 21 DPFDP above or below desired level diagnostics
Yes: Continue symptom 5 (MEDIUM DUTY) : BLACK
SMOKE in the Aftertreatment Diagnostic Manual
0000003081
Test with snap accel test to check for black
smoke, is black smoke present?
No: Remove DPF and inspect for defect and compare
to reuse guidelines in Aftertreatment Diagnostic
Manual 0000003081 if no defects found then go to
step 4.
Step Action
4
Decision
All steps have been completed, and SPN 3251
FMI 2 DPFDP above or below desired level is
still active.
Step Action
5
Page 2 of 3
Perform the pin drop test using ONLY an FSX
approved testing rod to determine if there is internal
DPF melting or defect. If no defects found then go to
step 5.
Decision
If the issue has been resolved it was most likely a
mounting or gasket issue.
Reinstall the DPF and retest for the issue.
Figure 1:
REMOVAL & INSTALLATION PROCEDURE
Follow Exhaust aftertreatment and diesel particulate filter (DPF) service manual for your vehicle (S07003 - S07006)
WARRANTY INFORMATION
Warranty Claim Coding:
Group: 12000 - ENGINES
235 - Diesel Particulate Filter
Noun: 575 - Sensor, DPF differential pressure
577 - Tube, DPF differential pressure sensor
Standard Repair Times:
Description
Chassis
7000
DIESEL PARTICULATE
FILTER (DPF), R & R
AND/OR REPLACE
Engine
All Engines
Models, ALL
All Engines
Models, ALL
All Engines
HC Bus
ELECTRONIC ENGINE
CONTROL SYSTEM OR
CE / BE
SCR SYSTEM (FAULT
CODE/CIRCUIT),
CE / BE
DIAGNOSIS (DPFDP
Sensor/Tubes Diagnostics) RE
Qualifier 1
Horizontal
Mount Under
Cab
Horizontal
Mount Under
Frame
Vertical Mount
Qualifier 2
SRT
Hours
A12-4930
A12-4932
Click
Here
for
Hours
A124934
MAXXFORCE DT/9/10 2010 Emissions
E122953T
MAXXFORCE DT/9/10 2010 Emissions
GY12-2953T
N 9/10
GY122953TS
MAXXFORCE DT/9/10 2010 Emissions
I122953T
4300,4400
MAXXFORCE DT/9/10 2010 Emissions
KL12-2953T
4300,4400
N 9/10
KL122953TS
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Hours
11/3/2015
IK1201159 SPN 3251 FMI 2 & 21 DPFDP above or below desired level diagnostics
DPF DIFFERENTIAL
PRESSURE SENSOR,
REPLACE
EXHAUST PRESSURE
DIFFERENTIAL SENSOR
TUBE(S), REPLACE
Page 3 of 3
7300, 7400, 7500
MAXXFORCE DT/9/10 2010 Emissions
M122953T
7300, 7400, 7500
N 9/10
M12-2953TS
Models, ALL
All Engines
A128575A
Models, ALL
MAXXFORCE DT/9/10
2010 Emissions ONE
Models, ALL
MAXXFORCE DT/9/10
2010 Emissions BOTH
Click
Here
for
Hours
A12-6577T
Click
Here
for
A12-6577T-20
Hours
OTHER RESOURCES
Aftertreatment Resource Center
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Feedback Information
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Helpful:
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Not Helpful: 5
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Copyright © 2015 Navistar
, Inc.
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TSB/Document ID: IK1201159
Replacement Service Bulletin Number:
MFR Communication Date: 2015-10-23
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE
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