NHTSA ID Number: 11021791
Manufacturer Communication Number: 25-01-051G TSB
TSB/Document Date: 2025-08-12
Summary
Certain G80 (RG3), GV70 (JK1/JK1A), and GV80 (JX1) vehicles equipped with Theta III 2.5L T-GDI engines may illuminate the Check Engine Light as a result of misfire DTCs P0300, P0301, P0302, P0303, or P0304 during cold start. This bulletin provides instructions for updating the Engine Control Module (ECM).
CAMPAIGN
25-01-051G
AUGUST 2025
G80 (RG3)
GV70 (JK1/JK1A)
GV80 (JX1)
ECM SOFTWARE UPDATE – P030X MISFIRE
(SERVICE CAMPAIGN 914G)
IMPORTANT
Retailers must perform this service campaign on all affected vehicles prior to retail delivery to a
guest and whenever an affected vehicle is in the shop for any maintenance or repair.
Access the “Vehicle Information” screen via WebDCS to identify open campaigns.
Description: Certain G80 (RG3), GV70 (JK1/JK1A), and GV80 (JX1) vehicles equipped with Theta III
2.5L T-GDI engines may illuminate the Check Engine Light as a result of misfire DTCs P0300, P0301,
P0302, P0303, or P0304 during cold start. This bulletin provides instructions for updating the Engine
Control Module (ECM).
Applicable Vehicles (Certain):
• 2021-2024MY G80 (RG3) produced from 07/25/2020 – 06/04/2024
• 2022-2023MY & 2025MY GV70 (JK1) produced from 03/29/2021 – 03/04/2025
(VIN starts with ‘KMU’)
• 2024-2025MY GV70 (JK1A) produced from 05/10/2023 – 02/13/2025 (VIN starts with ‘5NM’)
• 2021-2024MY GV80 (JX1) produced from 07/27/2020 – 03/04/2024
Parts Information:
914G
G80 (RG3)
Campaign
Sticker
NP001-SC914G
NP001-SC914G
GV70
(JK1/JKA1)
GV80 (JX1)
Vehicle
Emission Recall
- Proof of
Correction Card
NP050-09006
Apply to all
vehicles
regardless of
state.
Order only for
states:
CA, CO, CT,
DE, ME, MD,
MA, NJ, NY,
OR, PA, RI,
VT, WA
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
SST Information:
VCI 3
G0VPNNN006
Website:
https://genesisessentialtools.com/
Email:
[email protected]
VCI 2
G1XDDMN002
Phone: 1-855-763-6630
Hours: 7 AM – 7 PM CST
GDS Information:
Engine
1258
RG3 THETA3 2.5T-GDI FR MISFIRE DTC (P030X) IMPROVEMENT
1259
JX1 THETA3 2.5T-GDI FR MISFIRE DTC (P030X) IMPROVEMENT
1260
JK1(a) THETA3 2.5T-GDI FR MISFIRE DTC (P030X) IMPROVEMENT
(*or use a later available event as listed in the GDS ECM Update screen if one is available.)
Warranty Information:
G80 (RG3)
GV80 (JX1)
39121-2TRN0
50D088R0
GV70
(JK1/JK1A)
ECM Software Update
and Campaign Sticker 0.4 M/H
Installation
39121-2TJN0
I14
ZZ3
39121-2TKN3
NOTE 1: Submit claim on Claim Entry Screen as “Campaign” type.
NOTE 2: If a part is found in need of replacement while performing this campaign and the affected
part is still under warranty, submit a separate claim using the same repair order. If the affected part is
out of warranty, submit a Prior Approval request for goodwill consideration prior to performing the
work.
NOTE 3: This TSB includes repair validation photos. Op times include VIN, Mileage, and photo
capture of the "ECU update complete" screen as outlined in the Digital Documentation Policy.
TSB #: 25-01-051G
Page 2 of 9
ROM ID Information:
39121-2TRN0
G80
(RG3)
2021
6M1.EC0
RGBWD5TMX2XXXEEA
6M1.EE0
RGBWD5TMX2XXXEFA
6M1.EF0
RGBWD5TMX2XXXG2C
6M1.G20
RGBWD5TMX2XXXH0A
6M1.H00
RGDWD5TMX2XXXK5A
6M1.K50
RGEWD5TMX2XXXL8A
6M1.L80
RGEWD5TMX2XXXL8B
6M1.L80
RGEWD5TMX2XXXM2A
6M1.M20
RGEWD5TMX2XXXM2B
6M1.M20
JXBWD5TMA3XXXECC
6M1.EC0
JXBWD5TMA3XXXEEA
6M1.EE0
JXBWD5TMA3XXXEFA
6M1.EF0
JXBWD5TMA3XXXG2C
6M1.G20
JXBWD5TMA3XXXH0A
6M1.H00
JXDWD5TMA3XXXK5A
RGBWD5TMX2XXXH2A
6M1.H20
RGDWD5TMX2XXXK7A
6M1.K70
RGEWD5TMX2XXXM5A
6M1.M50
RGEWD5TMX2XXXM5B
6M1.M50
JXBWD5TMA3XXXH2A
6M1.H20
6M1.K50
JXDWD5TMA3XXXK7A
6M1.K70
JXDWD5TMA3XXXK5B
6M1.K50
JXDWD5TMA3XXXK7B
6M1.K70
JXEWD5TMA3XXXL8A
6M1.L80
JXEWD5TMA3XXXL8B
6M1.L80
JXEWD5TMA3XXXM5A
6M1.M50
JXEWD5TMA3XXXM2A
6M1.M20
JXEWD5TMA3XXXM2B
6M1.M20
JXEWD5TMA3XXXM5B
6M1.M50
JKBWD5TMA3XXXH0D
6M1.H00
JKBWD5TMA3XXXH2A
6M1.H20
JKBWD5TMA3XXXH0E
6M1.H00
JKEWD5TMA3XXXL8A
6M1.L80
JKEWD5TMA3XXXL8B
6M1.L80
1258
39121-2TRN5
39121-2TRN6
39121-2TRN7
39121-2TJN0
2022
2023
2024
2021
ECM
GV80
(JX1)
RGBWD5TMX2XXXECC
1259
39121-2TJN5
2022
39121-2TJN6
39121-2TJN7
GV70
(JK1)
2023
39121-2TJN8
2024
39121-2TKN0
2022
39121-2TKN1
2023
JKEWD5TMA3XXXM5A
1260
6M1.M50
JKEWD5TMA3XXXM2A
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TSB/Document ID: 25-01-051G TSB
Replacement Service Bulletin Number:
MFR Communication Date: 2025-08-06
MFR Internal Campaign ID/Software Version: 914G
Communication Type: Service Campaign
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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