NHTSA ID Number: 11028663
Manufacturer Communication Number: 26-01-010H TSB
TSB/Document Date: 2026-02-10
Summary
Certain Palisade (LX2) vehicles equipped with 3.8L GDI Lambda II engines may not meet engine-out NOx (Nitrogen Oxides) and Particulate Matter (PM) emission standards. This bulletin provides the service procedure to update the emission logic within the Engine Control Module (ECM) to improve engine-out NOx and PM emissions, so they are within permissible specifications. Additionally, improvements to reduce noise during engine start, and enhanced thermostat logic, are also included in the updated ECM software.
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TSB/Document ID: 26-01-010H TSB
Replacement Service Bulletin Number:
MFR Communication Date: 2026-02-03
MFR Internal Campaign ID/Software Version: 9C9
Communication Type: Service Campaign
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
GROUP
NUMBER
CAMPAIGN
Technical Service Bulletin
26-01-010H
DATE
MODEL(S)
FEBRUARY 2026
PALISADE (LX2)
ECU SOFTWARE UPDATE FOR LAMBDA II EMISSIONS
IMPROVEMENT (SERVICE CAMPAIGN 9C9)
SUBJECT:
IMPORTANT
Dealers must perform this service campaign on all affected vehicles prior to customer retail delivery
and whenever an affected vehicle is in the shop for any maintenance or repair.
Access the “Vehicle Information” screen via WebDCS to identify open campaigns.
Description: Certain Palisade (LX2) vehicles equipped with 3.8L GDI Lambda II engines may not
meet engine-out NOx (Nitrogen Oxides) and Particulate Matter (PM) emission standards. This bulletin
provides the service procedure to update the emission logic within the Engine Control Module (ECM)
to improve engine-out NOx and PM emissions, so they are within permissible specifications.
Additionally, improvements to reduce noise during engine start, and enhanced thermostat logic, are
also included in the updated ECM software.
Applicable Vehicles (Certain):
Model Year
Model
Production Dates
2020 – 2025
Palisade (LX2)
3.8L GDI Lambda II
04/10/2019 – 06/16/2025
Parts Information:
Model
Part Name
Part Number
Figure
Remarks
9C9
Emissions Label
NP001-SC9C9
NP001-SC9C9
Palisade
(LX2)
Vehicle Emission
Recall - Proof of
Correction Card
NP050-09006
Apply to all
vehicles
regardless of
state.
Order only for
states:
CA, CO, CT,
DE, ME, MD,
MA, NJ, NY,
OR, PA, RI,
VT, WA
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
SUBJECT: ECU SOFTWARE UPDATE FOR LAMBDA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C9)
SST Information:
Tool Name
Tool Number
VCI 3
G0VHNNN06
Figure
Ordering Information
Website:
https://hyundaiessentialtools.com/
Email:
Hyundaitools@snapon.com
VCI 2
Phone: 1-855-763-9199
Hours: 7 AM – 7 PM CST
G1XDDMN001
NOTE: VCI 2 can NO longer be ordered but can be used for the updates in this TSB.
GDS Information:
Model
Palisade
(LX2)
System
Event
Number*
Description
1332
LX2 ECU UPGRADE – Lambda II 3.8 EMISSION LOGIC
IMPROVEMENT
LX2 PE ECU UPGRADE - Lambda II 3.8 EMISSION LOGIC
IMPROVEMENT
(*or use a later available event listed in the GDS Engine Update screen if one is available.)
1333
Warranty Information:
Model
Op. Code
Operation
Palisade
ECU Software Update and
50D289R0
(LX2)
Emissions Label Application
Op.
Time
Causal Part
Nature
Code
Cause
Code
0.4 M/H
39122-3LFN0
M73
ZZ3
NOTE 1: Submit claim on Claim Entry Screen as “Campaign” type.
NOTE 2: If any part(s) not subject to this TSB are found in need of replacement while performing the
repair procedure, and the affected part(s) are still under warranty, the dealer may submit a separate
claim using the same repair order. If the part(s) not subject to this TSB are out of warranty coverage,
the dealer has the option to submit a PA Request for goodwill consideration on a case-by-case basis.
NOTE 3: This TSB includes repair validation photos. Op times include VIN, mileage, and photo
capture of the ECU Update “Success” screen as outlined in the Digital Documentation Policy.
TSB #: 26-01-010H
Page 2 of 9
SUBJECT: ECU SOFTWARE UPDATE FOR LAMBDA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C9)
ROM ID Information:
Model
Event
System
ECU
Part Number
Current
Latest
39122-3LFN0
LXLN8GMS_J0A
LXLN8GMS_K0A
LXLN8GMS_K0P
LXLN8GMS_K3A
39132-3LFN0
LXLN8GSS_J0A
LXLN8GSS_K0A
LXLN8GSS_K0P
LXLN8GSS_K3A
39122-3LFN1
LXMN8GMS_K0A
LXMN8GMS_K0B
LXMN8GMS_K0C
LXMN8GMS_K0D
LXMN8GMS_K0E
LXMN8GMS_K0F
LXMN8GMS_N2A
LXMN8GMS_N2P
LXMN8GMS_N3A
39132-3LFN1
LXMN8GSS_K0A
LXMN8GSS_K0B
LXMN8GSS_K0C
LXMN8GSS_K0D
LXMN8GSS_K0E
LXMN8GSS_K0F
LXMN8GSS_N2A
LXMN8GSS_N2P
LXMN8GSS_N3A
39122-3LFN2
LXNN8GMS_S1A
LXNN8GMS_S1B
LXNN8GMS_S1P
LXNN8GMS_S3A
39132-3LFN2
LXNN8GSS_S1A
LXNN8GSS_S1B
LXNN8GSS_S1P
LXNN8GSS_S3A
39102-3LFN5
LPPNEM___T3A
LPPNEM___T3C
LPPNEM___T3D
LPPNEM___T3E
LPPNEM___T3F
LPPNEM___T3X
LPPNEM___T4A
39102-3LFN7
LPQNEM___U0A
LPQNEM___U0B
LPQNEM___U1A
39102-3LFN3
LPRNEM___U0A
LPRNEM___U0B
LPRNEM___U1A
2020MY
Palisade (LX2)
2021MY
Palisade
(LX2)
1332
2022MY
Palisade
(LX2)
2023MY
Palisade
(LX2)
2024MY
Palisade
(LX2)
2025MY
Palisade
(LX2)
TSB #: 26-01-010H
ROM ID
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