NHTSA ID Number: 11014236
Manufacturer Communication Number: SC325_TSB
TSB/Document Date: 2025-02-12
Summary
TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: AEWP INSPECTION AND REPLACEMENT (SC325) - This bulletin provides information to inspect and, if necessary, replace the Auxiliary Electric Water Pump (AEWP), control harness wiring, and/or engine room junction box for coolant intrusion and/or corrosion on certain 2023MY Niro Hybrid
(HEV) and Plug-in Hybrid (PHEV), 2023MY Sportage HEV/PHEV, and 2022-2023MY Sorento HEV/PHEV Kia vehicles listed in this bulletin. The AEWP in the subject vehicles may crack internally and allow coolant to intrude into the AEWP circuitry. If coolant enters the AEWP circuitry, the Check Engine Light (CEL) may be illuminated with one or more DTCs listed on page 2. If the vehicle continues to be driven in this condition, the Active Air Flap (AAF) warning message can also activate, and coolant may eventually migrate through the wiring harness to the engine room junction block. This may result in a reduction of motive power and may cause the vehicle to release air pollutants which exceeds Federal and California standards. These standards were established to protect the public health and welfare from the dangers of air pollution.
P/N
25160 2MHY1QQK
Qty.
1
91400 P4080QQK
MQ4
240222R6
PHEV
3.0
M/H
or
91400 P4261
1
or
91400 P4371
1
25160 2MHX1QQK
1
91400 CH020QQK
25160
NQ5
UM022 CH271
2MHX1
(SC325)
HEV
DTC Inspection (NG)
240222R7
3.2
M/H
+ AEWP Connector
91400 CH100
Inspection (OK)
+ AEWP Replacement
+ Control Harness
Replacement
240222R8
PHEV
1
or
+ Control Harness
NQ5
or
91400 CH090
Inspection (NG)
0
or
91400 CH050QQK
3.2
M/H
UM022 CH271
1
25160 2MHY1QQK
1
91410 CH010
or
1
91410 CH040
UM022 CH271
1
25100 08HB0QQK
SG2
240222R9
HEV
91400 AT100QQK
25490
2.8
08HA0
M/H
SG2
240222RA
PHEV
1
UM022 CH271
25100 08HB0QQK
91400 AT130QQK
1
UM022 CH271
Continued on page 12.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
Kia America, Inc.
TSB: SC325 Multiple Models February 2025
Page 12 of 13
AEWP INSPECTION AND REPLACEMENT (SC325)
SUBJECT:
WARRANTY INFORMATION:
N Code: N99 C Code: C99
Model
Claim
Causal
Type
P/N
Qty.
Repair
Labor Op
Op
Replacement
Description
Code
Time
P/N
25160 2MHX1QQK
Qty.
1
91400 P4231QQK
or
MQ4
240222RB
HEV
3.1
M/H
91400 P4060QQK
or
1
91400 P4061
or
91400 P4311
(SC325)
DTC Inspection (NG)
+ AEWP Connector
MQ4
PHEV
2MHX1
Inspection (NG)
+ AEWP Replacement
UM022 CH271
1
25160 2MHY1QQK
1
or
+ Control Harness
0
1
91400 P4080QQK
Inspection (NG)
25160
91959 P2200
240222RC
3.1
M/H
+ Control Harness
Replacement
+ PCB Block
Replacement
91400 P4261
1
or
91400 P4371
91959 P2200
1
UM022 CH271
1
25160 2MHX1QQK
1
91400 CH020QQK
or
NQ5
240222RD
HEV
3.2
M/H
91400
CH050QQK
or
1
91400 CH090
or
91400 CH100
Continued on page 13.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: SC325 Multiple Models February 2025
Kia America, Inc.
91959 P1200
1
UM022 CH271
1
Page 13 of 13
AEWP INSPECTION AND REPLACEMENT (SC325)
SUBJECT:
WARRANTY INFORMATION:
N Code: N99 C Code: C99
Model
Claim
Causal
Type
P/N
Qty.
Repair
Labor Op
Op
Replacement
Description
Code
Time
P/N
25160 2MHY1QQK
Qty.
1
91410 CH010
NQ5
25160
PHEV
2MHX1
240222RE
3.2
M/H
(SC325)
DTC Inspection (NG)
+ AEWP Connector
Inspection (NG)
R
0
Inspection (NG)
+ AEWP Replacement
HEV
240222RF
+ Control Harness
1
91959 AT010
1
UM022 CH271
25100 08HB0QQK
240222RG
PHEV
UM022 CH271
M/H
Replacement
SG2
1
91400 AT100QQK
+ PCB Block
08HA0
91959 P1200
2.9
Replacement
25490
1
25100 08HB0QQK
+ Control Harness
SG2
or
91410 CH040
2.9
91400 AT130QQK
M/H
91959 AT010
1
UM022 CH271
Note: Refer to Warranty Bulletin 2025-07 for claim submission procedures. Manually enter sublet code
‘X2’ for reimbursement of one roundtrip rideshare expense or up to three (3) days of rental expense,
with supporting documentation.
Note: A Vehicle Diagnosis Number (VDN) must be created for DTC’s prior to ordering parts and
performing necessary procedure(s), as outlined in this TSB. If a VDN is not created, Parts Ordering and
Warranty claim submission issues WILL occur. Any claims for replacement parts are subject to Warranty
review and chargeback.
NOTICE
VIN inquiry data for this repair is provided for tracking purposes only. Kia retailers should reference
SC325 when accessing the KDealer+ system.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
Kia America, Inc.
TSB: SC325 Multiple Models February 2025
- Unsurpassed freeze protection and anti-boil performance...
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TSB/Document ID: SC325_TSB
Replacement Service Bulletin Number:
MFR Communication Date: 2025-02-07
MFR Internal Campaign ID/Software Version: SC325
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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