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.
QPDKNC4ERG0A
QPDKNC4ERG2A
Yes
39171 2GRA1
QPDKNC4ERG2B
39171 2GRB1
QPDKNC4ERG3A
QPDKNC4ERGXA
QPDKNC4ERG3B
QPDKNC4ERG3C
ECM
(ULEV)
QPDKNC4EMG0A
QPDKNC4EMG2A
No
39171 2GRC1
QPDKNC4EMG2B
39171 2GRD1
QPDKNC4EMG3A
QPDKNC4EMGXA
QPDKNC4EMG3B
QPDKNC4EMG3C
Sportage
(QL)
QPDKNS4ERG0A
20MY
QPDKNS4ERG0B
Yes
39171 2GRE1
39171 2GRF1
QPDKNS4ERG2A
QPDKNS4ERG2B
QPDKNS4ERGXA
QPDKNS4ERG3A
QPDKNS4ERG3B
QPDKNS4ERG3C
ECM
(SULEV)
QPDKNS4EMG0A
QPDKNS4EMG0B
No
39171 2GRG1
39171 2GRH1
QPDKNS4EMG2A
QPDKNS4EMG2B
QPDKNS4EMGXA
QPDKNS4EMG3A
QPDKNS4EMG3B
QPDKNS4EMG3C
Yes
ECM
(ULEV)
No
Sportage
39171 2GRA2
39171 2GRB2
39171 2GRC2
39171 2GRD2
QPDLNC4ERG3A
QPDLNC4ERGXA
QPDLNC4EMG3A
QPDLNC4EMGXA
QPDLNS4ERG3A
QPDLNS4ERGXA
QPDLNS4EMG3A
QPDLNS4EMGXA
(QL)
21MY
Yes
ECM
(SULEV)
No
39171 2GRE2
39171 2GRF2
39171 2GRG2
39171 2GRH2
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 8 of 28
SUBJECT:
THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340)
Upgrade Event #889 Sorento (UMa)
Model
System
IMMO
ECU P/No.
ROM ID
Previous
New
39100 2GGF8
UMAINC4ERA6A
UMAINC4ERA7A
UMAINC4ERA7B
UMAINC4ERD5A
UMAINC4ERD5B
UMAINC4ERD5K
UMAINC4ERD5M
UMAINC4ERD5O
UMAINC4ERD5Q
UMAINC4ERD5S
UMAINC4ERDXA
39100 2GGH8
UMAINC4ERA6A
UMAINC4ERA7A
UMAINC4ERA7B
UMAINC4ERD5A
UMAINC4ERD5B
UMAINC4ERD5L
UMAINC4ERD5N
UMAINC4ERD5P
UMAINC4ERD5R
UMAINC4ERD5T
UMAINC4ERDXB
39100 2GGF3
UMAINC4EMA6A
UMAINC4EMA7A
UMAINC4EMA7B
UMAINC4EMD5A
UMAINC4EMD5B
UMAINC4EMD5K
UMAINC4EMD5M
UMAINC4EMD5O
UMAINC4EMD5Q
UMAINC4EMD5S
UMAINC4EMDXA
39100 2GGH3
UMAINC4EMA6A
UMAINC4EMA7A
UMAINC4EMA7B
UMAINC4EMD5A
UMAINC4EMD5B
UMAINC4EMD5L
UMAINC4EMD5N
UMAINC4EMD5P
UMAINC4EMD5R
UMAINC4EMD5T
UMAINC4EMDXB
Yes
Sorento
(UMa)
18MY
ECM
(ULEV)
No
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 9 of 28
SUBJECT:
THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340)
Upgrade Event #890 Optima (JF/JFa)
Model
System
IMMO
ECU P/No.
ROM ID
Previous
New
JFAINC4ERDAA
JFAINC4ERDAB
JFAINC4ERD5A
Yes
39108 2GGC7
JFAINC4ERD5B
JFAINC4ERD5K
JFAINC4ERDXA
JFAINC4ERD5L
JFAINC4ERD5N
JFAINC4ERD5O
ECM
(ULEV)
JFAINC4EMDAA
JFAINC4EMDAB
JFAINC4EMD5A
No
39108 2GGC2
JFAINC4EMD5B
JFAINC4EMD5K
JFAINC4EMDXA
JFAINC4EMD5L
JFAINC4EMD5N
JFAINC4EMD5O
Optima
(JF/JFa)
18MY
JFAINS4ERDAA
JFAINS4ERDAB
JFAINS4ERD5A
Yes
39108 2GGD7
JFAINS4ERD5B
JFAINS4ERD5K
JFAINS4ERDXA
JFAINS4ERD5L
JFAINS4ERD5N
JFAINS4ERD5O
ECM
(SULEV)
JFAINS4EMDAA
JFAINS4EMDAB
JFAINS4EMD5A
No
39108 2GGD2
JFAINS4EMD5B
JFAINS4EMD5K
JFAINS4EMDXA
JFAINS4EMD5L
JFAINS4EMD5N
JFAINS4EMD5O
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 10 of 28
SUBJECT:
THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340)
Upgrade Event #891 Sportage (QL)
Model
System
IMMO
ECU P/No.
ROM ID
Previous
New
QLDINC4ERC3A
QLDINC4ERCAA
QLDINC4ERCAB
Yes
39100 2GHR6
QLDINC4ERD51
QLDINC4ERD52
QLDINC4ERDXA
QLDINC4ERD54
QLDINC4ERD5A
QLDINC4ERD5B
QLDINC4ERC3K
QLDINC4ERCAK
QLDINC4ERCAM
Yes
39100 2GHS6
QLDINC4ERD55
QLDINC4ERD56
QLDINC4ERDXB
QLDINC4ERD58
QLDINC4ERD5K
Sportage
(QL)
18MY
QLDINC4ERD5L
ECM
(ULEV)
QLDINC4EMC3A
QLDINC4EMCAA
QLDINC4EMCAB
No
39100 2GHS1
QLDINC4EMD51
QLDINC4EMD52
QLDINC4EMDXA
QLDINC4EMD54
QLDINC4EMD5A
QLDINC4EMD5B
QLDINC4EMC3K
QLDINC4EMCAK
QLDINC4EMCAM
No
9100 2GHT1
QLDINC4EMD55
QLDINC4EMD56
QLDINC4EMD58
QLDINC4EMD5K
QLDINC4EMD5L
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
QLDINC4EMDXB
Page 11 of 28
SUBJECT:
THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340)
Upgrade Event #891 Sportage (QL)
Model
System
IMMO
ROM ID
ECU P/No.
Previous
New
QLDINS4ERC3A
QLDINS4ERCAA
QLDINS4ERCAB
Yes
QLDINS4ERD51
39100 2GHT6
QLDINS4ERD52
QLDINS4ERDXA
QLDINS4ERD54
QLDINS4ERD5A
QLDINS4ERD5B
QLDINS4ERC3K
QLDINS4ERCAK
QLDINS4ERCAM
Yes
QLDINS4ERD55
39100 2GHV6
QLDINS4ERD56
QLDINS4ERDXB
QLDINS4ERD58
QLDINS4ERD5K
Sportage
(QL)
18MY
QLDINS4ERD5L
ECM
(SULEV)
QLDINS4EMC3A
QLDINS4EMCAA
QLDINS4EMCAB
No
QLDINS4EMD51
39100 2GHV1
QLDINS4EMD52
QLDINS4EMDXA
QLDINS4EMD54
QLDINS4EMD5A
QLDINS4EMD5B
QLDINS4EMC3K
QLDINS4EMCAK
QLDINS4EMCAM
No
39100 2GHW1
QLDINS4EMD55
QLDINS4EMD56
QLDINS4EMDXB
QLDINS4EMD58
QLDINS4EMD5K
QLDINS4EMD5L
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 12 of 28
SUBJECT:
THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340)
Upgrade Event #914 Sportage (QL)
Model
System
IMMO
ECU P/No.
39171 2GRA3
ROM ID
Previous
QPNNLM_A_S2A
QPNNLM_A_S2B
New
QPNNLM_A_SXA
Yes
39171 2GRB3
ECM
(ULEV)
39171 2GRC3
QPNNLM_G_S2A
QPNNLM_G_S2B
QPNNLS_A_S2A
QPNNLS_A_S2B
QPNNLM_G_SXA
QPNNLS_A_SXA
No
39171 2GRD3
Sportage
QPNNLS_G_S2A
QPNNLS_G_S2B
QPNNLS_G_SXA
(QL)
22MY
39171 2GRE3
QPNSLM_A_S2A
QPNSLM_A_S2B
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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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