NHTSA ID Number: 11029498
Manufacturer Communication Number: 26-01-026H TSB
TSB/Document Date: 2026-03-04
Summary
Certain Palisade (LX3) and Palisade Hybrid
(LX3 HEV) vehicles may exhibit a “Check Active Air Flap System” warning message, check engine light on, and/or “Low Engine Oil” warning message, due to improper operation of the Active Air Flap (AAF) system. DTCs include, but are not limited to: P05AE00, P05B100, P05B200 P05B400, P05FE00, P15A200, P15A500, P2C7400, U028500, U028B00, and/or U100800. This condition may be caused by water ingress and corrosion at the wiring connections for the lower AAF actuators and/or sensors. This bulletin contains instructions to inspect the front bumper wiring connectors, AAF actuators, and sensors for water ingress and corrosion, and to replace them if necessary.
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TSB/Document ID: 26-01-026H TSB
Replacement Service Bulletin Number:
MFR Communication Date: 2026-02-27
MFR Internal Campaign ID/Software Version: LA13
Communication Type: Warranty Program/Extension
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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GROUP
NUMBER
CAMPAIGN
26-01-026H
DATE
Technical Service Bulletin
MODEL(S)
FEBRUARY 2026
PALISADE (LX3)
PALISADE HYBRID
(LX3 HEV)
ACTIVE AIR FLAP WIRING ASSEMBLY INSPECTION &
REPLACEMENT (LIMITED COVERAGE CAMPAIGN LA13)
SUBJECT:
IMPORTANT
Dealers must perform this limited coverage campaign on all affected vehicles within 5 / 60,000 New
Vehicle Limited Warranty (NVLW) prior to customer retail delivery and whenever an affected vehicle
is in the shop for any maintenance or repair. See Warranty Information section for more details.
Access the “Vehicle Information” screen via WebDCS to verify “Warranty Start Date” and ensure the
vehicle is within NVLW, observing mileage prior to any repair work.
Description: Certain Palisade (LX3) and Palisade Hybrid (LX3 HEV) vehicles may exhibit a “Check
Active Air Flap System” warning message, check engine light on, and/or “Low Engine Oil” warning
message, due to improper operation of the Active Air Flap (AAF) system. DTCs include, but are not
limited to: P05AE00, P05B100, P05B200 P05B400, P05FE00, P15A200, P15A500, P2C7400,
U028500, U028B00, and/or U100800. This condition may be caused by water ingress and corrosion at
the wiring connections for the lower AAF actuators and/or sensors. This bulletin contains instructions to
inspect the front bumper wiring connectors, AAF actuators, and sensors for water ingress and corrosion,
and to replace them if necessary.
AAF Front Bumper Wiring Connector
AAF Actuator Pins
Applicable Vehicles (Certain):
Model Year
2026
Model
Production Dates
Palisade (LX3)
05/07/2025 – 12/17/2025
Palisade Hybrid (LX3 HEV)
08/11/2025 – 12/17/2025
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
ACTIVE AIR FLAP WIRING ASSEMBLY INSPECTION &
REPLACEMENT (LIMITED COVERAGE CAMPAIGN LA13)
SUBJECT:
Parts Information:
Model
Palisade
(LX3)
Palisade
Hybrid
(LX3 HEV)
Part Name
Part Number
Figure
Remarks
Actuator –
Active Air, LH
86989-P9100QQH
86989-DU100QQH (HEV)
Qty 1*
Actuator –
Active Air, RH
86999-P9100QQH
86999-DU100QQH (HEV)
Qty 1*
Sensor –
Active Air Flap
8697A-R6000QQH
Qty 2*
Wiring Harness –
FR Bumper
91890-P9BE0QQH
91890-P9BH0QQH
91890-P9AL0QQH
91891-P9AC0QQH
Qty 1*
14206-08250B
Clip
14207-06130M
14207-06180N
Clip - Cowl Top
Cover MTG
N/A
Replace only
if broken
during
procedure
86157-37000
*NOTE 1: Part quantity and selection will depend on inspection results.
NOTE 2: Dealer will be reimbursed via sublet as noted for any clips, regardless of replacement.
Required Equipment/Supplies:
Name
Figure
Remarks
TSB #: 26-01-026H
1 ea. Required for
Actuator Pin Inspection
Page 2 of 18
ACTIVE AIR FLAP WIRING ASSEMBLY INSPECTION &
REPLACEMENT (LIMITED COVERAGE CAMPAIGN LA13)
SUBJECT:
Warranty Information:
Model
Palisade
(LX3)
Op. Code
Operation
Op.
Time
50D310R0
Front Bumper Wiring & AAF Actuator Pin
Inspection
0.3
M/H
50D310R2-R5*
Front Bumper Wiring & AAF Actuator Pin
Inspection, Sensor Connectors Check, and
Wiring & LH Actuator & Sensor
Replacement
1.1
M/H
Front Bumper Wiring & AAF Actuator Pin
Inspection, Sensor Connectors Check, and
50D310RD-RG*
Wiring & LH/RH Actuator & LH/RH Sensor
Replacement
1.2
M/H
50D310RH
Front Bumper Wiring & AAF Actuator Pin
Inspection
0.3
M/H
Causal Nature Cause
Part
Code Code
91891P9AC0
B1E
ZZ3
Front Bumper Wiring & AAF Actuator Pin
Palisade
Inspection, Sensor Connectors Check, and
50D310RK-RM*
Hybrid
Wiring & LH Actuator & Sensor
Replacement
(LX3
HEV)
Front Bumper Wiring & AAF Actuator Pin
1.1
M/H
Inspection, Sensor Connectors Check, and
Wiring & LH/RH Actuator & LH/RH Sensor
Replacement
1.2
M/H
50D310RU-RW*
*NOTE 1: For op codes with replacement of bumper, actuator(s), and sensor(s), please refer to the
Appendix section at end of this TSB for specific part numbers being reimbursed.
NOTE 2: Submit claim on Claim Entry Screen as “Campaign” type.
NOTE 3: 5 / 60,000 New Vehicle Limited Warranty (NVLW) applies to the part(s) and repair
procedure(s) outlined in this TSB. Prior to beginning any repair work, ensure the part(s) associated
with the repair procedure are within NVLW, observing mileage and Warranty Start Date or date of first
use. If the subject part(s) 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 4: 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 5: This TSB includes repair validation photos. Op times include VIN, mileage, and repair
validation photo(s) as outlined in the Digital Documentation Policy.
NOTE 6: The incident parts are subject to callback through the normal Warranty Technical Center
(WTC) parts return process. Claim is subject to debit if the part is not returned.
NOTE 7: Op codes will reimburse $4.00 in sublet for any damaged clips during the repair procedure.
TSB #: 26-01-026H
Page 3 of 18
SUBJECT:
ACTIVE AIR FLAP WIRING ASSEMBLY INSPECTION &
REPLACEMENT (LIMITED COVERAGE CAMPAIGN LA13)
Service Procedure:
DIGITAL DOCUMENTATION
This TSB includes repair validation photos. Refer to the latest Warranty Digital Documentation
Policy for requirements.
NOTICE
Applying the recommended torque to all fasteners is essential to reduce potential issues from
occurring after the service procedure.
Table of Contents
•
Flowchart ................................................................................................................................. 5
•
Oil Level Inspection ................................................................................................................. 6
•
Front Bumper Wiring & AAF Actuator Pin Inspection ............................................................... 6
•
Front Bumper Removal .......................................................................................................... 10
•
AAF Sensor Inspection .......................................................................................................... 12
•
Replacement of Front Bumper Harness, AAF Actuator(s), and AAF Sensor(s) ..................... 14
•
Appendix – Op Code/Parts Reimbursement .......................................................................... 18
TSB #: 26-01-026H
Page 4 of 18
ACTIVE AIR FLAP WIRING ASSEMBLY INSPECTION &
REPLACEMENT (LIMITED COVERAGE CAMPAIGN LA13)
SUBJECT:
Flowchart
Vehicle In
Oil Level Check
Fail
Resolve low oil condition
Pass
LH/RH Front Bumper
Wiring Connector Visual
Inspection
Both Sides Fail
One or Both Sides Pass
LH/RH AAF
Actuator Pin
Inspection
Both Sides Pass Inspections
STUI photo of LH Front
Bumper Harness
Connector
One Side Fails
LH Fail
ONLY
LH/RH Sensor
Connector Visual
Inspection
RH Fail
Replace LH Actuator,
Sensor, and
Front Bumper Wiring
Harness
Replace LH and RH
Actuators, Sensors, and
Front Bumper Wiring
Harness
STUI Photo of LH
Actuator Pins
STUI Photo of
Assembled Front Bumper
Vehicle Out
TSB #: 26-01-026H
Page 5 of 18
ACTIVE AIR FLAP WIRING ASSEMBLY INSPECTION &
REPLACEMENT (LIMITED COVERAGE CAMPAIGN LA13)
SUBJECT:
Oil Level Inspection
1.
Inspect the oil level by referring to the shop
manual:
• Engine Mechanical System >
Lubrication System > Inspection
NOTICE
If the vehicle fails oil level inspection,
address root cause of low oil separate
from this campaign. Once rectified,
restart campaign procedure.
Front Bumper Wiring & AAF Actuator Pin Inspection
1.
Visually check that the lift blocks are properly
seated on the vehicle support points and raise
the vehicle.
NOTICE
Raising the vehicle from anywhere other
than the support points may damage
vehicle components.
Refer to the shop manual:
• General Information > Lift and
Support Points > General Information
2.
Remove the bolts and clips, then remove the
engine room under cover (A).
A
Tightening Torque:
lb-ft
7.3
lb-in
87
N.m
9.8
TSB #: 26-01-026H
Page 6 of 18
ACTIVE AIR FLAP WIRING ASSEMBLY INSPECTION &
REPLACEMENT (LIMITED COVERAGE CAMPAIGN LA13)
SUBJECT:
3.
Disconnect the AAF actuator
connectors (B).
Visually inspect both the LH and RH front
bumper wiring connectors for water ingress or
corrosion.
i
B
Information
At right are examples of good (PASS)
and damaged (FAIL) wiring connectors.
•
•
PASS: If damage is NOT found on
either LH or RH connectors:
o Proceed to step 4.
PASS
FAIL
FAIL: If damage is found,
o On ONE side ONLY: Proceed to
step 4.
o On BOTH sides: Proceed to the
Front Bumper Removal
procedure.
TSB #: 26-01-026H
Page 7 of 18
ACTIVE AIR FLAP WIRING ASSEMBLY INSPECTION &
REPLACEMENT (LIMITED COVERAGE CAMPAIGN LA13)
SUBJECT:
4.
On the side(s) that received a PASS in step 3,
use a small mirror and flashlight to inspect the
AAF actuator pins for water ingress or
corrosion to ensure no damage is missed.
i
PASS
Information
At right are examples of good (PASS)
and damaged (FAIL) actuator pins.
•
PASS: If damage is NOT found in
BOTH inspections (steps 3 and 4),
proceed to step 5.
•
FAIL: If damage is found in either
inspection (step 3 or 4), proceed to the
Front Bumper Removal procedure.
NOTICE
If ANY corrosion or water ingress
evidence is found, even if it is minor, the
inspection is still a FAIL.
TSB #: 26-01-026H
FAIL
Page 8 of 18
SUBJECT:
5.
ACTIVE AIR FLAP WIRING ASSEMBLY INSPECTION &
REPLACEMENT (LIMITED COVERAGE CAMPAIGN LA13)
DIGITAL
DOCUMENTATION
Using the STUI camera function, take a
photo of the of the clean LH front bumper
harness connector.
Upload the photo to STUI.
NOTE: If the STUI camera function is
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