TSB130159-090420

Fault Code 3167 or 1691 Caused by a Missing Poppet in the EcoFit™ Aftertreatment Fue... Page 1 of 5
Technical Service Bulletin
Technical Service Bulletin:
Released Date: 05-Sep-2018
TSB130159
Fault Code 3167 or 1691 Caused by a Missing Poppet in the EcoFit™
Aftertreatment Fuel Injector
Fault Code 3167 or 1691 Caused by a Missing
Poppet in the EcoFit™ Aftertreatment Fuel
Injector
Warranty Statement
The information in this document has no effect on present warranty coverage or repair
practices, nor does it authorize TRP or Campaign actions.
Contents
This document informs the field of a missing poppet in the EcoFit™ aftertreatment fuel
injector causing Fault Code 3167 or 1691.
This issue is isolated to the new EcoFit™ aftertreatment fuel injector design. The new
EcoFit™ aftertreatment fuel injector is susceptible to the inner poppet falling out due to a
worn retaining spring retainer. This situation can increase the probability of fouling that
can cause a high restriction of the injection of fuel into the aftertreatment system.
See Table 1 to reference the affected part numbers:
Table 1
Engine Family
EcoFit™ Aftertreatment
Fuel Injector Part
Number
EcoFit™ Aftertreatment
Fuel Injector Service Kit
Part Number
ISX CM871
ISM CM876
5300987
4309454NX
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Table 1
Engine Family
EcoFit™ Aftertreatment
Fuel Injector Part
Number
EcoFit™ Aftertreatment
Fuel Injector Service Kit
Part Number
ISX 12 CM2250
ISX 15 CM2250
QSX11.9 CM2250
QSX15 CM2250
ISX12 CM2350
ISX15 CM2350
QSX15 CM2350 X106
5294110
4309349NX
• The engine control module (ECM) illuminates the amber CHECK ENGINE lamp
and/or the malfunction indicator lamp (MIL).
• Fuel injection into the aftertreatment system is not sufficient to perform active
regeneration of the aftertreatment diesel particulate filter.
Malfunctioned EcoFit™ aftertreatment fuel injectors will have a hole in the center of the
injection point. A normal EcoFit™ aftertreatment fuel injector will have a visible plunger
(poppet) at the center of the injection point.
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Missing Poppet - EcoFit™ Aftertreatment Fuel Injector
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9/24/2018
Fault Code 3167 or 1691 Caused by a Missing Poppet in the EcoFit™ Aftertreatment Fue... Page 4 of 5
Poppet - EcoFit™ Aftertreatment Fuel Injector
If the EcoFit™ aftertreatment fuel injector is missing the lower poppet, replace the
aftertreatment fuel injector.
Table 2
Engine Family
Engine Build Date
Engine Serial Number
First
ISX15 CM2350 X101
6-Feb-14
79717919
ISX12 CM2350 X102
5-Feb-14
75026326
Document History
Date
Details
2013-11-4
Module Created
2014-5-8
typo correction
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9/24/2018
Fault Code 3167 or 1691 Caused by a Missing Poppet in the EcoFit™ Aftertreatment Fue... Page 5 of 5
Date
Details
2014-9-30
none
2018-9-4
Added QSX15 CM2350 X106.
Last Modified: 05-Sep-2018
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9/24/2018