NHTSA ID Number: 11031854
Manufacturer Communication Number: SC340_TSB_R5
TSB/Document Date: 2026-05-01
Summary
VOLUNTARY EMISSIONS SERVICE CAMPAIGN: THETA II 2.4L GDI EMISSIONS: ECM LOGIC IMPROVEMENT (SC340 REVISION 5) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to upgrade the Electronic Control Module ‘ECM’ system software for certain 2016-2020MY Optima, 2016-2020MY Sorento, 2017-2022MY Sportage vehicles equipped with 2.4L Theta II engines listed in the table below. Kia
has become aware that certain 2016-2022MY vehicles equipped with 2.4L Theta II engines may have engine calibrations that were not optimized for emissions standards under certain specific conditions. These calibrations may cause the vehicle to release air pollutants which exceed Federal and California standards. These standards were established to protect your health and welfare from the dangers of air pollution.
QPNSLM_A_SXA
Yes
39171 2GRF3
ECM
(SULEV)
39171 2GRG3
QPNSLM_G_S2A
QPNSLM_G_S2B
QPNSLS_A_S2A
QPNSLS_A_S2B
QPNSLM_G_SXA
QPNSLS_A_SXA
No
39171 2GRH3
QPNSLS_G_S2A
QPNSLS_G_S2B
Continued…
Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: SC340 (Rev 5) Multiple Models November 2025
QPNSLS_G_SXA
Page 13 of 28
SUBJECT:
THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340)
Upgrade Event #925 Sportage (QL)
Model
System
IMMO
ECU P/No.
ROM ID
Previous
New
QLDGNC4ERB2A
QLDHNC4ERB2A
QLDHNC4ERB4A
QLDHNC4ERB4B
39100 2GHR5
QLDHNC4ERB41
QLDHNC4ERBXA
QLDHNC4ERB42
QLDHNC4ERB43
QLDHNC4ERB44
QLDHNC4ERB4C
Yes
QLDGNC4ERB2K
QLDHNC4ERB2K
QLDHNC4ERB4K
QLDHNC4ERB4L
39100 2GHS5
QLDHNC4ERB45
QLDHNC4ERBXB
QLDHNC4ERB46
QLDHNC4ERB47
QLDHNC4ERB48
Sportage
(QL)
17MY
QLDHNC4ERB4M
ECM
(ULEV)
QLDGNC4EMB2A
QLDHNC4EMB2A
QLDHNC4EMB4A
QLDHNC4EMB4B
39100 2GHS0
QLDHNC4EMB41
QLDHNC4EMBXA
QLDHNC4EMB42
QLDHNC4EMB43
QLDHNC4EMB44
QLDHNC4EMB4C
No
QLDGNC4EMB2K
QLDHNC4EMB2K
QLDHNC4EMB4K
QLDHNC4EMB4L
39100 2GHT0
QLDHNC4EMB45
QLDHNC4EMBXB
QLDHNC4EMB46
QLDHNC4EMB47
QLDHNC4EMB48
QLDHNC4EMB4M
Continued…
Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: SC340 (Rev 5) Multiple Models November 2025
Page 14 of 28
SUBJECT:
THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340)
Upgrade Event #925 Sportage (QL)
Model
System
IMMO
ECU P/No.
ROM ID
Previous
New
QLDGNS4ERB2A
QLDHNS4ERB2A
QLDHNS4ERB4A
QLDHNS4ERB4B
39100 2GHT5
QLDHNS4ERB41
QLDHNS4ERBXA
QLDHNS4ERB42
QLDHNS4ERB43
QLDHNS4ERB44
QLDHNS4ERB4C
Yes
QLDGNS4ERB2K
QLDHNS4ERB2K
QLDHNS4ERB4K
QLDHNS4ERB4L
39100 2GHV5
QLDHNS4ERB45
QLDHNS4ERBXB
QLDHNS4ERB46
QLDHNS4ERB47
QLDHNS4ERB48
Sportage
(QL)
17MY
QLDHNS4ERB4M
ECM
(SULEV)
QLDGNS4EMB2A
QLDHNS4EMB2A
QLDHNS4EMB4A
QLDHNS4EMB4B
39100 2GHV0
QLDHNS4EMB41
QLDHNS4EMBXA
QLDHNS4EMB42
QLDHNS4EMB43
QLDHNS4EMB44
QLDHNS4EMB4C
No
QLDGNS4EMB2K
QLDHNS4EMB2K
QLDHNS4EMB4K
QLDHNS4EMB4L
39100 2GHW0
QLDHNS4EMB45
QLDHNS4EMB46
QLDHNS4EMB47
QLDHNS4EMB48
QLDHNS4EMB4M
Continued…
Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: SC340 (Rev 5) Multiple Models November 2025
QLDHNS4EMBXB
Page 15 of 28
SUBJECT:
THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340)
Upgrade Event # 932 Sorento (UMa)
Model
System
IMMO
ROM ID
ECU P/No.
Previous
New
UMAFNC4ER91A
UMAFNC4ER92A
UMAFNC4ERA31
UMAFNC4ERA51
39100 2GGF5
UMAFNC4ERA52
UMAFNC4ERAXA
UMAFNC4ERA6K
UMAFNC4ERA6Q
UMAFNC4ERA6U
Yes
UMAFNC4ER91A
UMAFNC4ER92A
UMAFNC4ERA31
UMAFNC4ERA51
39100 2GGH5
UMAFNC4ERA52
UMAFNC4ERAXB
UMAFNC4ERA6L
UMAFNC4ERA6O
UMAFNC4ERA6R
Sorento
(UMa)
16~17MY
UMAFNC4ERA6V
ECM
(ULEV)
UMAFNC4EM91A
UMAFNC4EM92A
UMAFNC4EMA31
UMAFNC4EMA51
39100 2GGF0
UMAFNC4EMA52
UMAFNC4EMAXA
UMAFNC4EMA6K
UMAFNC4EMA6Q
UMAFNC4EMA6U
No
UMAFNC4EM91A
UMAFNC4EM92A
UMAFNC4EMA31
UMAFNC4EMA51
39100 2GGH0
UMAFNC4EMA52
UMAFNC4EMAXB
UMAFNC4EMA6L
UMAFNC4EMA6O
UMAFNC4EMA6R
UMAFNC4EMA6V
Continued…
Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: SC340 (Rev 5) Multiple Models November 2025
Page 16 of 28
SUBJECT:
THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340)
Upgrade Event # 932 Sorento (UMa)
Model
System
IMMO
ECU P/No.
ROM ID
Previous
New
UMAFNC4ERA3A
UMAFNC4ERA5A
UMAFNC4ERA5B
39100 2GGF6
UMAFNC4ERA5C
UMAFNC4ERAXC
UMAFNC4ERA6M
UMAFNC4ERA6S
UMAFNC4ERA6W
Yes
UMAFNC4ERA3A
UMAFNC4ERA5A
UMAFNC4ERA5B
39100 2GGH6
UMAFNC4ERA5C
UMAFNC4ERA6N
UMAFNC4ERAXD
UMAFNC4ERA6P
UMAFNC4ERA6T
Sorento
(UMa)
16~17MY
UMAFNC4ERA6X
ECM
(ULEV)
UMAFNC4EMA3A
UMAFNC4EMA5A
UMAFNC4EMA5B
39100 2GGF1
UMAFNC4EMA5C
UMAFNC4EMAXC
UMAFNC4EMA6M
UMAFNC4EMA6S
UMAFNC4EMA6W
No
UMAFNC4EMA3A
UMAFNC4EMA5A
UMAFNC4EMA5B
39100 2GGH1
UMAFNC4EMA5C
UMAFNC4EMA6N
UMAFNC4EMA6P
UMAFNC4EMA6T
UMAFNC4EMA6X
Continued…
Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: SC340 (Rev 5) Multiple Models November 2025
UMAFNC4EMAXD
Page 17 of 28
SUBJECT:
THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340)
Upgrade Event # 932 Sorento (UMa)
Model
System
IMMO
ROM ID
ECU P/No.
Previous
New
UMAHNC4ERA5A
UMAHNC4ERA5B
UMAHNC4ERA6A
UMAHNC4ERA6B
39100 2GGF6
UMAHNC4ERA6K
39100 2GGF7
UMAHNC4ERAXA
UMAHNC4ERA6M
UMAHNC4ERA6Q
UMAHNC4ERA6O
UMAHNC4ERA6S
Yes
UMAHNC4ERA5A
UMAHNC4ERA5B
UMAHNC4ERA6A
39100 2GGH6
39100 2GGH7
UMAHNC4ERA6B
UMAHNC4ERA6L
UMAHNC4ERAXB
UMAHNC4ERA6N
UMAHNC4ERA6R
UMAHNC4ERA6P
Sorento
(UMa)
16~17MY
UMAHNC4ERA6T
ECM
(ULEV)
UMAHNC4EMA5A
UMAHNC4EMA5B
UMAHNC4EMA6A
39100 2GGF1
39100 2GGF2
UMAHNC4EMA6B
UMAHNC4EMA6K
UMAHNC4EMAXA
UMAHNC4EMA6M
UMAHNC4EMA6Q
UMAHNC4EMA6O
UMAHNC4EMA6S
No
UMAHNC4EMA5A
UMAHNC4EMA5B
UMAHNC4EMA6A
39100 2GGH1
39100 2GGH2
UMAHNC4EMA6B
UMAHNC4EMA6L
UMAHNC4EMAXB
UMAHNC4EMA6N
UMAHNC4EMA6R
UMAHNC4EMA6P
UMAHNC4EMA6T
Continued…
Printed document copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: SC340 (Rev 5) Multiple Models November 2025
Page 18 of 28
SUBJECT:
THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340)
Upgrade Event #959 Optima (JF/JFa)
Model
System
IMMO
ECU P/No.
ROM ID
Previous
New
JFAGNC4ERB0A
JFAGNC4ERB0B
JFAGNC4ERC0A
JFAGNC4ERC3A
JFAGNC4ERCXA
JFAGNC4ERC3K
Yes
39108 2GGC5
JFAGNC4ERC3L
JFAGNC4ERC3M
JFAGNC4ERD11
JFAGNC4ERD1K
JFAGNC4ERD1L
ECM
JFAGNC4ERD1M
(ULEV)
JFAGNC4EMB0A
JFAGNC4ERDXA
JFAGNC4EMB0B
JFAGNC4EMC0A
JFAGNC4EMC3A
JFAGNC4EMCXA
JFAGNC4EMC3K
No
39108 2GGC0
JFAGNC4EMC3L
JFAGNC4EMC3M
JFAGNC4EMD11
JFAGNC4EMD1K
JFAGNC4EMD1L
Optima
JFAGNC4EMDXA
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TSB/Document ID: SC340_TSB_R5
Replacement Service Bulletin Number:
MFR Communication Date: 2026-04-04
MFR Internal Campaign ID/Software Version: SC340
Communication Type: Emissions
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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