NHTSA ID Number: 11028669
Manufacturer Communication Number: 26-01-013H TSB
TSB/Document Date: 2026-02-10
Summary
Certain Santa Fe (TMA), Santa Fe Sport (AN), Sonata (LFA), and Tucson (TL) vehicles equipped with Theta II engines may exhibit elevated engine-out emissions. This bulletin provides instructions for updating the Engine Control Module (ECM) to address this condition.
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TSB/Document ID: 26-01-013H TSB
Replacement Service Bulletin Number:
MFR Communication Date: 2026-02-06
MFR Internal Campaign ID/Software Version: 9C2
Communication Type: Service Campaign
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
LPAINC4EMDXA
39112-2GGK5
LPAINS4ERDAA
LPAINS4ERDAB
LPAINS4ERD5A
LPAINS4ERD5B
LPAINS4ERD5K
LPAINS4ERD5L
LPAINS4ERD5M
LPAINS4ERD5N
LPAINS4ERD5O
LPAINS4ERDXA
39112-2GGK0
LPAINS4EMDAA
LPAINS4EMDAB
LPAINS4EMD5A
LPAINS4EMD5B
LPAINS4EMD5K
LPAINS4EMD5L
LPAINS4EMD5M
LPAINS4EMD5N
LPAINS4EMD5O
LPAINS4EMDXA
1330
O
X
TSB #: 26-01-013H
ROM ID
Page 15 of 20
SUBJECT: ECU SOFTWARE UPDATE FOR THETA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C2)
ROM ID Information (continued):
Model
2019MY
Sonata
(LFA)
Event
IMMO
ECU
Part Number
O
39112-2GGK7
X
39112-2GGK2
1329
39171-2GTC0
39171-2GTD0
O
2019MY
Santa Fe
(TMA)
1267
X
TSB #: 26-01-013H
ROM ID
Current
LPAJNS4ERE6A
LPAJNS4ERG1B
LPAJNS4ERG1C
LPAJNS4ERG1D
LPAJNS4ERG1E
LPAJNS4EME6A
LPAJNS4EMG1B
LPAJNS4EMG1C
LPAJNS4EMG1D
LPAJNS4EMG1E
TMAJNC48SE2A
TMAJNC48SE2B
TMAJNC48SEAC
TMAJNC48SEAD
TMAJNC48SEAE
TMAJNC48SEAF
TMAJNC48SG1A
TMAJNC48SG1B
TMAJNC48SG1C
TMAJNC48SG1D
TMAJNC48SG1E
TMAJNC48SG1F
Latest
LPAJNS4ERGXA
LPAJNS4EMGXA
TMAJNC48SGXA
39171-2GTC5
TMAJNS48SE2A
TMAJNS48SE2B
TMAJNS48SEAC
TMAJNS48SEAD
TMAJNS48SEAE
TMAJNS48SEAF
TMAJNS48SG1A
TMAJNS48SG1B
TMAJNS48SG1C
TMAJNS48SG1D
TMAJNS48SG1E
TMAJNS48SG1F
TMAJNS48SGXA
39173-2GTE0
39173-2GTF0
TMAJNC48NE2A
TMAJNC48NE2B
TMAJNC48NEAC
TMAJNC48NEAD
TMAJNC48NEAE
TMAJNC48NEAF
TMAJNC48NG1A
TMAJNC48NG1B
TMAJNC48NG1C
TMAJNC48NG1D
TMAJNC48NG1E
TMAJNC48NG1F
TMAJNC48NGXA
Page 16 of 20
SUBJECT: ECU SOFTWARE UPDATE FOR THETA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C2)
ROM ID Information (continued):
Model
Event
2019MY
Santa Fe
(TMA)
IMMO
X
ECU
Part Number
39173-2GTG0
39171-2GTC1
39171-2GTD1
O
1267
39171-2GTC6
2020MY
Santa Fe
(TMA)
39173-2GTE1
39173-2GTF1
X
39173-2GTG1
TSB #: 26-01-013H
ROM ID
Current
Latest
TMAJNS48NE2A
TMAJNS48NE2B
TMAJNS48NEAC
TMAJNS48NEAD
TMAJNS48NEAE
TMAJNS48NEAF
TMAJNS48NG1A
TMAJNS48NG1B
TMAJNS48NG1C
TMAJNS48NG1D
TMAJNS48NG1E
TMAJNS48NG1F
TMAJNS48NGXA
TMAKNC48SG11
TMAKNC48SG1A
TMAKNC48SG1B
TMAKNC48SG1C
TMAKNC48SG3A
TMAKNC48SG3B
TMAKNC48SG3C
TMAKNC48SG3D
TMAKNC48SG3E
TMAKNS48SG11
TMAKNS48SG1A
TMAKNS48SG1B
TMAKNS48SG1C
TMAKNS48SG3A
TMAKNS48SG3B
TMAKNS48SG3C
TMAKNS48SG3D
TMAKNS48SG3E
TMAKNC48NG11
TMAKNC48NG1A
TMAKNC48NG1B
TMAKNC48NG1C
TMAKNC48NG3A
TMAKNC48NG3B
TMAKNC48NG3C
TMAKNC48NG3D
TMAKNC48NG3E
TMAKNS48NG11
TMAKNS48NG1A
TMAKNS48NG1B
TMAKNS48NG1C
TMAKNS48NG3A
TMAKNS48NG3B
TMAKNS48NG3C
TMAKNS48NG3D
TMAKNS48NG3E
TMAKNC48SGXA
TMAKNS48SGXA
TMAKNC48NGXA
TMAKNS48NGXA
Page 17 of 20
SUBJECT: ECU SOFTWARE UPDATE FOR THETA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C2)
ROM ID Information (continued):
Model
Event
IMMO
2WD/
4WD
2WD
ECU
Part Number
Current
Latest
39100-2GKP0
DMAHNC4ERB0A
DMAHNC4ERB2A
DMAHNC4ERB2B
DMAHNC4ERB2C
DMAHNC4ERB4A
DMAHNC4ERB4K
DMAHNC4ERB4M
DMAHNC4ERB4O
DMAHNC4ERB4P
DMAHNC4ERB4Q
DMAHNC4ERB4S
DMAHNC4ERBXA
39100-2GKP5
DMAHNC4ERB2A
DMAHNC4ERB2B
DMAHNC4ERB2C
DMAHNC4ERB4A
DMAHNC4ERB4L
DMAHNC4ERB4N
DMAHNC4ERB4R
DMAHNC4ERB4T
DMAHNC4ERBXB
39100-2GKR0
DMAHNC4EMB0A
DMAHNC4EMB2A
DMAHNC4EMB2B
DMAHNC4EMB2C
DMAHNC4EMB4A
DMAHNC4EMB4K
DMAHNC4EMB4M
DMAHNC4EMB4O
DMAHNC4EMB4P
DMAHNC4EMB4Q
DMAHNC4EMB4S
DMAHNC4EMBXA
39100-2GKR5
DMAHNC4EMB2A
DMAHNC4EMB2B
DMAHNC4EMB2C
DMAHNC4EMB4A
DMAHNC4EMB4L
DMAHNC4EMB4N
DMAHNC4EMB4R
DMAHNC4EMB4T
DMAHNC4EMBXB
O
4WD
2017MY
Santa Fe
Sport (AN)
1373
2WD
X
4WD
TSB #: 26-01-013H
ROM ID
Page 18 of 20
SUBJECT: ECU SOFTWARE UPDATE FOR THETA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C2)
ROM ID Information (continued):
Model
Event
IMMO
2WD/
4WD
2WD
ECU
Part Number
Current
Latest
39100-2GKP1
DMAINC4ERB4A
DMAINC4ERC0A
DMAINC4ERB5A
DMAINC4ERB5B
DMAINC4ERB5K
DMAINC4ERB5M
DMAINC4ERB5O
DMAINC4ERB5P
DMAINC4ERB5Q
DMAINC4ERB5S
DMAINC4ERBXA
39100-2GKP6
DMAINC4ERB4A
DMAINC4ERC0A
DMAINC4ERB5A
DMAINC4ERB5B
DMAINC4ERB5L
DMAINC4ERB5N
DMAINC4ERB5R
DMAINC4ERB5T
DMAINC4ERBXB
39100-2GKR1
DMAINC4EMB4A
DMAINC4EMC0A
DMAINC4EMB5A
DMAINC4EMB5B
DMAINC4EMB5K
DMAINC4EMB5M
DMAINC4EMB5O
DMAINC4EMB5P
DMAINC4EMB5Q
DMAINC4EMB5S
DMAINC4EMBXA
39100-2GKR6
DMAINC4EMB4A
DMAINC4EMC0A
DMAINC4EMB5A
DMAINC4EMB5B
DMAINC4EMB5L
DMAINC4EMB5N
DMAINC4EMB5R
DMAINC4EMB5T
DMAINC4EMBXB
O
4WD
2018MY
Santa Fe
Sport (AN)
1373
2WD
X
4WD
TSB #: 26-01-013H
ROM ID
Page 19 of 20
SUBJECT: ECU SOFTWARE UPDATE FOR THETA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C2)
ROM ID Information (continued):
Model
2018MY
Tucson
(TL)
Event
1331
IMMO
ECU
Part Number
Current
Latest
39171-2GAA0
TSDINC4ERD5A
TSDINC4ERD5K
TSDINC4ERD5M
TSDINC4ERD5O
TSDINC4ERD5P
TSDINC4ERD5Q
TSDINC4ERD5S
TSDINC4ERDXA
39171-2GAB0
TSDINC4ERD5C
TSDINC4ERD5L
TSDINC4ERD5N
TSDINC4ERD5R
TSDINC4ERD5T
TSDINC4ERDXB
39171-2GPA0
39171-2GPB0
TPDJNC4ERE6A
TPDJNC4ERE6B
TPDJNC4ERG1A
TPDJNC4ERG1B
TPDJNC4ERG1C
TPDJNC4ERG1D
TPDJNC4ERGXA
39171-2GPG0
TPDJNS4ERE6A
TPDJNS4ERE6B
TPDJNS4ERE6C
TPDJNS4ERG1D
TPDJNS4ERG1E
TPDJNS4ERG1F
TPDJNS4ERG1G
TPDJNS4ERGXA
39171-2GPA1
39171-2GPB1
TPDKNC4ERG1A
TPDKNC4ERG1B
TPDKNC4ERG3A
TPDKNC4ERG3B
TPDKNC4ERG3C
TPDKNC4ERGXA
39171-2GPG1
TPDKNS4ERG1A
TPDKNS4ERG1B
TPDKNS4ERG3A
TPDKNS4ERG3B
TPDKNS4ERG3C
TPDKNS4ERGXA
39171-2GPB2
TPDLNC4ERG3A
TPDLNC4ERGXA
39171-2GPG2
TPDLNS4ERG3A
TPDLNS4ERGXA
O
2019MY
Tucson
(TL)
1269
O
2020MY
Tucson
(TL)
2021MY
Tucson
(TL)
TSB #: 26-01-013H
ROM ID
Page 20 of 20
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