NHTSA ID Number: 11029939
Manufacturer Communication Number: 26-01-013H-1 TSB
TSB/Document Date: 2026-03-11
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.
ROM ID Information (continued):
Model
2015MY
Sonata
(LFA)
Event
1383
IMMO
X
O
X
2016MY
Sonata
(LFA)
ECU
Part Number
Current
Latest
39111-2GGL0
LFAFNS4EM84A
LFAFNS4EM86A
LFAFNS4EM86B
LFAFNS4EM86C
LFAFNS4EM87A
LFAFNS4EM87B
LFAFNS4EM88A
LFAFNS4EMA51
LFAFNS4EMA52
LFAFNS4EMA53
LFAFNS4EMA57
LFAFNS4EMA58
LFAFNS4EMC0A
LFAFNS4EMC0K
LFAFNS4EMC0L
LFAFNS4EMC0M
LFAFNS4EMCXA
39111-2GGK6
LFAGNC4ERA21
LFAGNC4ERA3A
LFAGNC4ERA5A
LFAGNC4ERB0A
LFAGNC4ERB0B
LFAGNC4ERC0A
LFAGNC4ERC0K
LFAGNC4ERC0L
LFAGNC4ERC0M
LFAGNC4ERCXA
39111-2GGK1
LFAGNC4EMA21
LFAGNC4EMA3A
LFAGNC4EMA5A
LFAGNC4EMB0A
LFAGNC4EMB0B
LFAGNC4EMC0A
LFAGNC4EMC0K
LFAGNC4EMC0L
LFAGNC4EMC0M
LFAGNC4EMCXA
39111-2GGL6
LFAGNS4ERA21
LFAGNS4ERA3A
LFAGNS4ERA5A
LFAGNS4ERB0A
LFAGNS4ERB0B
LFAGNS4ERC0A
LFAGNS4ERC0K
LFAGNS4ERC0L
LFAGNS4ERC0M
LFAGNS4ERCXA
39111-2GGL1
LFAGNS4EMA21
LFAGNS4EMA3A
LFAGNS4EMA5A
LFAGNS4EMB0A
LFAGNS4EMB0B
LFAGNS4EMC0A
LFAGNS4EMC0K
LFAGNS4EMC0L
LFAGNS4EMC0M
LFAGNS4EMCXA
1372
O
X
TSB #: 26-01-013H-1
ROM ID
Page 13 of 21
SUBJECT: ECU SOFTWARE UPDATE FOR THETA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C2)
ROM ID Information (continued):
Model
2017MY
Sonata
(LFA)
Event
ECU
Part Number
Current
Latest
39111-2GGK7
LFAHNC4ERC0A
LFAHNC4ERC0B
LFAHNC4ERC0K
LFAHNC4ERC0L
LFAHNC4ERC0M
LFAHNC4ERC0N
LFAHNC4ERC0O
LFAHNC4ERCXA
39111-2GGK2
LFAHNC4EMC0A
LFAHNC4EMC0K
LFAHNC4EMC0L
LFAHNC4EMC0M
LFAHNC4EMC0N
LFAHNC4EMC0O
LFAHNC4EMCXA
39111-2GGL7
LFAHNS4ERC0A
LFAHNS4ERC0B
LFAHNS4ERC0K
LFAHNS4ERC0L
LFAHNS4ERC0M
LFAHNS4ERC0N
LFAHNS4ERC0O
LFAHNS4ERCXA
39111-2GGL2
LFAHNS4EMC0A
LFAHNS4EMC0B
LFAHNS4EMC0K
LFAHNS4EMC0L
LFAHNS4EMC0M
LFAHNS4EMC0N
LFAHNS4EMC0O
LFAHNS4EMCXA
39111-2GGK8
LFAHNC4ERC3A
LFAHNC4ERC3B
LFAHNC4ERC3K
LFAHNC4ERC3L
LFAHNC4ERC3M
LFAHNC4ERC3N
LFAHNC4ERC3O
LFAHNC4ERCXB
39111-2GGK3
LFAHNC4EMC0B
LFAHNC4EMC3A
LFAHNC4EMC3B
LFAHNC4EMC3K
LFAHNC4EMC3L
LFAHNC4EMC3M
LFAHNC4EMC3N
LFAHNC4EMC3O
LFAHNC4EMCXB
1367
TSB #: 26-01-013H-1
ROM ID
Page 14 of 21
SUBJECT: ECU SOFTWARE UPDATE FOR THETA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C2)
ROM ID Information (continued):
Model
2017MY
Sonata
(LFA)
Event
ECU
Part Number
Current
Latest
39111-2GGL8
LFAHNS4ERC3A
LFAHNS4ERC3B
LFAHNS4ERC3K
LFAHNS4ERC3L
LFAHNS4ERC3M
LFAHNS4ERC3N
LFAHNS4ERC3O
LFAHNS4ERCXB
39111-2GGL3
LFAHNS4EMC3A
LFAHNS4EMC3B
LFAHNS4EMC3K
LFAHNS4EMC3L
LFAHNS4EMC3M
LFAHNS4EMC3N
LFAHNS4EMC3O
LFAHNS4EMCXB
39111-2GGK9
LFAHNC4ERC5A
LFAHNC4ERC5K
LFAHNC4ERC5L
LFAHNC4ERC5M
LFAHNC4ERC5N
LFAHNC4ERC5O
LFAHNC4ERCXC
39111-2GGK4
LFAHNC4EMC5A
LFAHNC4EMC5K
LFAHNC4EMC5L
LFAHNC4EMC5N
LFAHNC4EMC5O
LFAHNC4EMCXC
39111-2GGL9
LFAHNS4ERC5A
LFAHNS4ERC5K
LFAHNS4ERC5L
LFAHNS4ERC5M
LFAHNS4ERC5N
LFAHNS4ERC5O
LFAHNS4ERCXC
39111-2GGL4
LFAHNS4EMC5A
LFAHNS4EMC5K
LFAHNS4EMC5L
LFAHNS4EMC5M
LFAHNS4EMC5N
LFAHNS4EMC5O
LFAHNS4EMCXC
1367
TSB #: 26-01-013H-1
ROM ID
Page 15 of 21
SUBJECT: ECU SOFTWARE UPDATE FOR THETA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C2)
ROM ID Information (continued):
Model
Event
IMMO
O
X
2018MY
Sonata
(LFA)
Latest
39112-2GGJ5
LPAINC4ERDAA
LPAINC4ERDAB
LPAINC4ERD5A
LPAINC4ERD5B
LPAINC4ERD5K
LPAINC4ERD5L
LPAINC4ERD5M
LPAINC4ERD5N
LPAINC4ERD5O
LPAINC4ERDXA
39112-2GGJ0
LPAINC4EMDAA
LPAINC4EMDAB
LPAINC4EMD5A
LPAINC4EMD5B
LPAINC4EMD5K
LPAINC4EMD5L
LPAINC4EMD5M
LPAINC4EMD5N
LPAINC4EMD5O
LPAINC4EMDXA
O
39112-2GGK5
X
39112-2GGK0
TSB #: 26-01-013H-1
LPAINS4ERDAA
LPAINS4ERDAB
LPAINS4ERD5A
LPAINS4ERD5B
LPAINS4ERD5K
LPAINS4ERD5L
LPAINS4ERD5M
LPAINS4ERD5N
LPAINS4ERD5O
LPAINS4EMDAA
LPAINS4EMDAB
LPAINS4EMD5A
LPAINS4EMD5B
LPAINS4EMD5K
LPAINS4EMD5L
LPAINS4EMD5M
LPAINS4EMD5N
LPAINS4EMD5O
LPAINS4ERDXA
LPAINS4EMDXA
39112-2GGK7
LPAJNS4ERE6A
LPAJNS4ERG1B
LPAJNS4ERG1C
LPAJNS4ERG1D
LPAJNS4ERG1E
LPAJNS4ERGXA
39112-2GGK2
LPAJNS4EME6A
LPAJNS4EMG1B
LPAJNS4EMG1C
LPAJNS4EMG1D
LPAJNS4EMG1E
LPAJNS4EMGXA
1329
X
ROM ID
Current
1330
O
2019MY
Sonata
(LFA)
ECU
Part Number
Page 16 of 21
SUBJECT: ECU SOFTWARE UPDATE FOR THETA II EMISSIONS IMPROVEMENT (SERVICE CAMPAIGN 9C2)
ROM ID Information (continued):
Model
Event
IMMO
ECU
Part Number
Current
Latest
39171-2GTC0
39171-2GTD0
TMAJNC48SE2A
TMAJNC48SE2B
TMAJNC48SEAC
TMAJNC48SEAD
TMAJNC48SEAE
TMAJNC48SEAF
TMAJNC48SG1A
TMAJNC48SG1B
TMAJNC48SG1C
TMAJNC48SG1D
TMAJNC48SG1E
TMAJNC48SG1F
TMAJNC48SGXA
39171-2GTC5
TMAJNS48SE2A
TMAJNS48SE2B
TMAJNS48SEAC
TMAJNS48SEAD
TMAJNS48SEAE
TMAJNS48SEAF
TMAJNS48SG1A
TMAJNS48SG1B
TMAJNS48SG1C
TMAJNS48SG1D
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TSB/Document ID: 26-01-013H-1 TSB
Replacement Service Bulletin Number:
MFR Communication Date: 2026-03-04
MFR Internal Campaign ID/Software Version: 9C2
Communication Type: Service Campaign
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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