NHTSA ID Number: 11028156
Manufacturer Communication Number: CE031
TSB/Document Date: 2026-02-04
Summary
DPF Delta Pressure Sensor part number 2200138 for MX-11 engines has been added to this warranty policy.
CE031 MX Component Specific Emissions Warranty for
EMY2022 PACCAR MX-11 and MX-13 Engines
1/27/2026
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CE031: MX Component Specific Emissions Warranty for EMY2022 PACCAR MX-11 and MX-13 Engines
Whats New Abstract
1/27/2026: DPF Delta Pressure Sensor part number 2200138 for MX-11 engines has been added to this
warranty policy.
Introduction
U.S. & Canada Federal emissions regulates that the warranty coverage is a period of ten (10) years or
435,000 miles/700,000 km/22,000 engine hours, whichever comes first, from the original warranty
registration date, for these specific components on the EMY2022 PACCAR MX-11 and MX-13 Engines.
PACCAR has implemented the extension and it is effective retroactively, unless the part is listed as
ineligible for reimbursement below.
Revision
1/27/2026: DPF Delta Pressure Sensor part number 2200138 for MX-11 engines has been added to this
warranty policy.
8/19/2025-Fuel Injection Pump (2185361PE) for PACCAR MX-13 engines have been added to this warranty
policy
3/10/2025- New injector part numbers added to MX component specific emissions warranty.
12/19/2024 – DPF Delta Pressure Sensor part number 2200138PE for MX-13 engines has been added to this
warranty policy.
Condition
Units that have coverage under this warranty will be identified in the Service Information Record (SIR):
Sales Code
Coverage Description
9202162
EW: MX Emissions 10yr/435K Miles (700K KM) – Engine MY2022
Submit a long-form warranty claim through PRWS, using the applicable claim type shown in the chart
below, for any repair that meets the requirements of this bulletin. If the repair falls under campaign E290,
file a claim using appropriate quick claim code from campaign E290. Please ensure the correct VIN
number is selected and that all claim filing requirements are met.
Please use the following coding when submitting your warranty claim:
PPD Part Number
Part Description
Claim Type
Failure Location
2314737PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2314736PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2383578PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2383579PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2394547PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2394548PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2403775PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2403776PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2403200PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2403201PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2403777PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2403778PEX
044-004-001
2423651PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2423652PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2423653PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2423654PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2426853PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2426854PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2426855PEX
Fuel Injector, MX-11, EPA21
044-004-001
2426856PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2429854PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2429855PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2428773PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2428774PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2452061PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2452062PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2460409PEX
Fuel Injector, MX-11, EPA21
044-004-001
2460410PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2460411PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2460412PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2460413PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2460414PEX
Fuel Injector, MX-13, EPA21
044-004-001
2185361PE
Fuel Injection Pump
Engine
044-004-001
2200138
DPF Delta Pressure Sensor, MX-11, MX-13, EPA21
Engine
043-006-007
For retroactive payments please file a long-form claim, and populate parts and labor costs to the sublet
fields. Please make sure to attach an invoice and receipt to the claim to document the repair and
payment made.
Warranty
The emissions warranty will cover the repair costs for any failure of an emissions-related part described in this
bulletin that results under normal use and service, caused by a warrantable failure, which must be the result of
a defect in material and/or factory workmanship. Reimbursement will include:
Parts
Labor
Consumables (when not reusable)
Please submit a claim using one of the following claim types:
For DEF sensor claims, file a TRUCK claim.
For all other engine-related claims, file an ENGINE claim
PROACTIVE REPAIRS ARE NOT COVERED BY THIS PROGRAM.
Towing will only be covered if 'engine' emission component failure occurs within the base engine period of 24
months/250,000 miles/6,250 hours. Outside of base engine coverage, towing and travel are excluded. PACCAR
will pay for reasonable labor costs for engine removal and reinstallation when necessary to repair a
warrantable failure.
The emissions warranty is retroactive and applies to qualifying warrantable failures that customers have
already had repaired at their expense.
Components that qualify for coverage on EMY2022 PACCAR MX-11 and MX-13 Engines:
Engine Model Year
PPD Part Number
Part Description
2022 (MX-13)
2314737PEX (1)
Fuel Injector
2383579PEX (1)
2394548PEX (1)
2403776PEX (1)
2403201PEX (1)
2403778PEX (1)
2423652PEX (1)
2423654PEX (1)
2426854PEX (1)
2426856PEX (1)
2429855PEX (1)
2428774PEX (1)
2452062PEX (1)
2460410PEX (1)
2460412PEX (1)
2460414PEX (1)
2022 (MX-11)
2314736PEX (1)
2383578PEX (1)
2394547PEX (1)
2403775PEX (1)
2403200PEX (1)
2403777PEX (1)
2423651PEX (1)
Fuel Injector
2423653PEX (1)
2426853PEX (1)
2426855PEX (1)
2429854PEX (1)
2428773PEX (1)
2452061PEX (1)
2460409PEX (1)
2460411PEX (1)
2460413PEX (1)
2022 (MX13)
2185361PE(1)
Fuel Injection Pump
2022 (MX-11 and MX13)
2200138(2)
DPF Delta Pressure Sensor
(1)Part
added in a previous update.
(2)Part
added in latest update.
Attachments
U.S. Customer Letter
Canada English Customer Letter
Chassis List
Kenworth Truck Company
Customer Service Department
C/O PACCAR Parts
750 Houser Way North
Renton, WA 98057
(425) 828-5888
[Date]
Subject: CE031: MX Component Specific Emissions Warranty for EMY2022
PACCAR MX-11 and MX-13 Engines
Expiration Date: None
This notice applies to your vehicle; Your VIN(s) can be found on the front or back of this page.
Dear Kenworth Customer,
This is not a recall or campaign. You do not need to schedule an appointment with your
dealer unless you experience a problem with your vehicle.
This letter has been sent to inform you that Kenworth Truck Company has extended the warranty
coverage on certain emissions components installed on your vehicle(s). Your vehicle(s)
contain(s) one or more of the parts listed in this letter. No action is needed on your part.
The Emissions Warranty Coverage for the components listed in the table below has been
extended to 10 years, 435,000 vehicle miles/700,000 km, or 22,000 engine hours from the
original warranty registration date, whichever comes first.
Table 1 Parts Covered by Extended Warranty Coverage (EWC Code 9202162)
Part Name
Part Number
Result of Failure
Fuel Injector (MX-13,
EPA21)
2314737PEX (1)
2383579PEX(1)
2394548PEX (1)
2403776PEX (1)
2403201PEX (1)
2403778PEX (1)
2423652PEX (1)
2423654PEX (1)
2426854PEX (1)
2426856PEX (1)
2429855PEX (1)
2428774PEX (1)
2452062PEX (1)
2460410PEX (1)
2460412PEX (1)
2460414PEX (1)
Inefficient fuel injector performance can lead to
insufficient regeneration and high soot loading of
DPF due to uneven fuel burning.
Kenworth Truck Company
Customer Service Department
C/O PACCAR Parts
750 Houser Way North
Renton, WA 98057
(425) 828-5888
Fuel Injector (MX-11,
EPA21)
2314736PEX (1)
2383578PEX (1)
2394547PEX (1)
2403775PEX (1)
2403200PEX (1)
2403777PEX (1)
2423651PEX (1)
2423653PEX (1)
2426853PEX (1)
2426855PEX (1)
2429854PEX (1)
2428773PEX (1)
2452061PEX (1)
2460409PEX (1)
2460411PEX (1)
2460413PEX (1)
Inefficient fuel injector performance can lead to
insufficient regeneration and high soot loading of
DPF due to uneven fuel burning.
Fuel Injection Pump
(MX-13, EPA21)
2185361PE (1)
Failures of the Fuel Injection Pumps that result in
inaccurate monitoring of exhaust gases have the
potential to compromise SCR system effectiveness
and affect tailpipe emissions of NOx.
DPF Delta Pressure
2200138 (2)
Sensor (MX-11, MX-13,
EPA21)
Failures of the Delta Pressure Sensor that result in
inaccurate monitoring of the DPF/SCR have the
potential to compromise the DPF/SCR system
effectiveness and affect tailpipe emissions of NOx
and/or particulate matter.
(1)
Components that were included in a previous letter.
(2)
Additional component added to Extended Warranty Coverage.
If you have previously paid to replace one of the components listed in the tables above, you may
be eligible for reimbursement of the cost of parts and labor. Please provide your Kenworth
Dealer with a receipt for the repair and your dealer will file a claim on your behalf. If approved,
your dealer will issue reimbursement.
To locate your nearest dealer please scan the QR code at the top of this letter or use the Dealer
Locator at www.Kenworth.com. When contacting your selected Kenworth dealer, refer to
Extended Warranty Code (EWC) 9202162 and the VIN listed on this letter.
Kenworth Truck Company
Customer Service Department
C/O PACCAR Parts
750 Houser Way North
Renton, WA 98057
(425) 828-5888
If you are the lessor of this vehicle, federal regulations require you to forward a copy of this
notice to the lessee within ten days. If you no longer own this vehicle, please email the last 8
digits of the VIN and the new owner’s name and address to [email protected].
Sincerely,
Kenworth Customer Service
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TSB/Document ID: CE031
Replacement Service Bulletin Number:
MFR Communication Date: 2026-01-27
MFR Internal Campaign ID/Software Version: CE031
Communication Type: Other
NHTSA Components: FUEL/PROPULSION SYSTEM
MFR Component System:
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