CAMPAIGN

25-01-026G

MAY 2025

GV80 (JX1)
GV80 COUPE (JX1)

ECU UPDATE – P0461/ P2066 FUEL LEVEL SENSOR LOGIC
(SERVICE CAMPAIGN 912G)
 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 2025MY GV80 and GV80 Coupe (JX1) vehicles equipped with the 3.5T-GDI
Lambda III engine may NOT experience a warning lamp illumination of DTC P0461/P2066 when the
calculated fuel consumption and the fuel consumption calculated from the fuel level sensor signal is
over its threshold value.
Follow the service procedure outlined in this bulletin to update the engine control module to revise the
fuel level sensor warning light logic.
Applicable Vehicles (Certain):
• 2025MY GV80 (JX1) produced from 03/30/2024 – 11/19/2024
• 2025MY GV80 Coupe (JX1) produced from 04/01/2024 – 12/02/2024
Parts Information:

912G
GV80
(JX1)
GV80
Coupe
(JX1)

Campaign
Sticker

NP001-SC912G
NP001-SC912G

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

GDS Information:

JX PE ECU UPGRADE - DIAGNOSIS LOGIC IMPROVEMENT
(P0461/P2066)
(*or use a later available event as listed in the GDS Engine Update screen if one is available.)
ECU

1217

Warranty Information:

ECU Update and Campaign
0.4 M/H 39128-3N075
I14
ZZ3
Sticker Installation
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: Op times include VIN, Mileage, and photo capture of the “ECU update complete” screen as
outlined in the Digital Documentation Policy.
GV80 (JX1) 50D031R0

ROM ID Information:

39128-3N075
GV80 (JX1)
1217
GV80 Coupe
(JX1)

Engine

39128-3N049
39128-3N058

SJX-5NU0HF300M0K
SJX-5NU0HF400M0K
TJX-5NU0HF000M0K
TJX-5NU0HF100M0K
TJX-5NU0HF000MCK
TJX-5NU0HF100MCK

TSB #: 25-01-026G

SJX-5NU0HF700M0K
TJX-5NU0HF200M0K
TJX-5NU0HF200MCK

Page 2 of 9
SUBJECT:

Service Procedure:

DIGITAL DOCUMENTATION
This TSB includes Repair validation photos. Refer to the latest Warranty Digital Documentation
Policy for requirements.

NOTICE
You must initially perform the GDS ECU update in Auto Mode.
• If the ECU update starts but then fails in Auto Mode, perform the update in Manual Mode
to recover.

NOTICE
Ensure the vehicle’s battery charge is above 11.0 Volts and the tablet’s battery charge is above
30% before performing a software update to avoid the update from failing.

i

Information

•

Turn OFF all lamps (do NOT leave head lamp switch in auto mode) and all accessories.

•

Perform update with the ignition switch in the ON position.

•

Do NOT disconnect any cables connected to the vehicle or scan tool during update.

•

Do NOT start the engine during update.

•

Do NOT turn OFF the ignition switch during update.

TSB #: 25-01-026G

Page 3 of 9
SUBJECT:

1.

Perform the ECU update in Auto Mode.
Use the ID Check to verify the ROM ID before
updating the software.

i

Information

Refer to TSB # 24-GI-016G, “ECU
Update Procedure for Tablet-Based
Genesis Smart”, for additional
information.

2.

Select the ECU system to scan the vehicle’s
current ROM ID.

NOTICE
Check the current ROM ID version and
compare it to the ROM ID Information
table before attempting to perform the
software update.

NOTICE
If the update fails, please remove the
power connector or the battery (–)
connector from the indoor fuse box for at
least 5 seconds and reassemble it to
retry the update.

TSB #: 25-01-026G

Page 4 of 9
SUBJECT:

3.

After the ECU update process shows 100%
complete, follow the prompts on the screen to
cycle the ignition OFF for at least 10 seconds
to reset the control unit (certain models may
take up to 30 seconds).

i

Information

Use the Refresh button to reset the
timer.

4.

DIGITAL
DOCUMENTATION

Take a screenshot of the ECU update
complete screen using your tablet and
upload to STUI.

TSB #: 25-01-026G

Page 5 of 9
SUBJECT:

5.

Certain vehicles may experience a notice
message stating the ECU reprogram was
successful, but the OTA initialization has
failed.
If the message is shown, perform the OTA
initialization manually under S/W
Management.
•

S/W Management > CCU_CCNF –
Central Communication Unit (CCNF)
> OTA Initialization

TSB #: 25-01-026G

Page 6 of 9
SUBJECT:

5.

Perform an All Systems Fault Code search
and erase DTC history that had incidentally
occurred from the ECU update.

6.

Disconnect the power connector (A) of the
indoor fuse box, wait at least 5 seconds, then
reconnect it.

i

Information

A

Alternatively, disconnect the negative (–)
12V battery terminal, wait 5 seconds,
then reconnect it.

7.

Start the engine to confirm proper operation of
the vehicle.

8.

Proceed to Campaign Sticker Application
(for All Vehicles) on page 8.

NOTICE
If the ECU update fails in Auto Mode, perform the update in Manual Mode using the password(s)
below.
Manual Mode Password: Event 1217
JX1 PE 3.5T ECU 39128-3N075

3075

JX1 PE 3.5T ECU 39128-3N049

2535

JX1 PE 3.5T ECU 39128-3N058

5258

TSB #: 25-01-026G

Page 7 of 9
SUBJECT:

1.

Fill in the Dealer Code and Date on the
Campaign Sticker, and apply adjacent to the
existing Emission Label, on the underside of
the hood, as shown.
Clean the mounting surface to ensure proper
label adhesion.

2.

DIGITAL
DOCUMENTATION

Using STUI, take a clear photo of the
campaign sticker along with the last 6
digits of the VIN and the date of repair
on a piece of paper.
Upload the photo to STUI.

3.

Proceed to next section and complete the
Vehicle Emission Recall - Proof of
Correction Card for the states listed on page
1.
If not applicable to your state, the repair
process is complete.

TSB #: 25-01-026G

Page 8 of 9
SUBJECT:

For vehicles registered in California, Colorado, Connecticut, Delaware, Maine, Maryland,
Massachusetts, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Vermont, and
Washington:
VEHICLE EMISSION RECALL - PROOF OF CORRECTION CARD
A Vehicle Emission Recall - Proof of Correction card must be filled out for all vehicles registered in
California, Colorado, Connecticut, Delaware, Maine, Maryland, Massachusetts, New Jersey, New
York, Oregon, Pennsylvania, Rhode Island, Vermont, and Washington. Residents of these states,
who own an affected vehicle, will be required to possess a Vehicle Emission Recall - Proof of
Correction card as evidence of voluntary service campaign completion, when they apply for vehicle
registration renewal.
WHAT TO DO WITH THE CARD:
The Vehicle Emission Recall - Proof of Correction card must be completed by the Dealership’s
Service Manager using a permanent ink pen. A fine point pen is recommended. When filling in the
information, copy the information directly from the vehicle, not from the repair order.
ALL INFORMATION MUST BE PRINTED AND NEAT.
The copy of the card shown below indicates the areas to be filled in. Each area must be filled in.
The completely filled out Vehicle Emission Recall - Proof of Correction card should be given
to the owner of the vehicle upon completion of the Campaign.
1.
2.
3.
4.
5.
6.

Enter Vehicle’s License Number
Enter “Genesis”
Enter Model Year
Enter model name (e.g. GV80)
Enter the vehicle’s VIN Number
Enter Recall Number – 912G

1

2

7. Enter Dealership Name
8. Enter Dealership’s Address
NOTE: Enter the physical address, not the
mailing address (not a P.O. Box)
9. Enter Date of Repair
10. Service Manager Sign Here

5

4

3

6

2

8

7

9

10

TSB #: 25-01-026G

Page 9 of 9
SUBJECT: