GROUP

MODEL

TRA

2023MY
Niro P/HEV
(SG2 P/HEV)

NUMBER

DATE

106 (Rev 1, 04/06/2023)

February 2023

TECHNICAL SERVICE BULLETIN
SUBJECT:

6-SPEED DCT JUDGEMENT LOGIC IMPROVEMENT /
GROUND BOLT TIGHTENING (P074A73)

 NOTICE
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 tighten both the clutch actuator and transmission control unit (TCU)
grounding bolts, and upgrade the software logic of the 6-speed dual clutch transmission (DCT) on some
2023MY Niro P/HEV vehicles produced from June 14, 2022 through December 12, 2022, which may exhibit a
poor shift quality concern and MIL ‘ON’ with DTC P074A73 stored. Follow the procedure outlined in this
publication to tighten both the clutch actuator and TCU grounds, and then upgrade the software logic of the
‘A/T’ system using the KDS ECU Upgrade function as described in this bulletin. For confirmation that the latest
reflash has been applied to a vehicle you are working on, verify the ROM ID using the table on pages 4 and 5
of this bulletin.
DTC Description:
P074A73: Unable to Engage (Shift) Gear 2

Kia Diagnostic System (KDS)

A printed copy is for reference only; publication information can be updated at any time.
Always refer to KGIS for the latest information. After logging in kdealer.com, the newest technical
publications are listed in ‘Service Releases’ and has the latest service information that has been released.

Page 2 of 10

6-SPEED DCT JUDGEMENT LOGIC IMPROVEMENT /
SUBJECT:

GROUND BOLT TIGHTENING (P074A73)

Repair Procedure:
1.

Using a 10mm socket with an extension,
tighten the clutch actuator ground bolt
(GC103) and TCU ground bolt (GC102).

Tightening torque for GC102:
5.8 – 7.2 lb.ft (7.8 – 9.8 N.m)
Tightening torque for GC103:
7.2 – 8.7 lb.ft (9.8 – 11.8 N.m)

GC102
GC103

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: TRA106 (Rev 1) Niro P/HEV (SG2 P/HEV) February 2023

Page 3 of 10

6-SPEED DCT JUDGEMENT LOGIC IMPROVEMENT /
SUBJECT:

GROUND BOLT TIGHTENING (P074A73)

ECU Upgrade Procedure:
To correct this condition, the ECU should be reprogrammed using the KDS
download, as described in this bulletin.
Upgrade Event Name
646.SG2 HEV/PHEV 6DCT MIL ON DTC JUDGMENT LOGIC IMPROVEMENT (P074A73)

 NOTICE
•

Confirm a fully charged battery (12.3 volts or higher is necessary) is used or utilize a fully
charged jump starter box connected to the battery.

•

Ensure the KDS GDS is sufficiently charged at 60% or higher prior to reflash.

•

All ECU upgrades must be performed with the ignition set to the ‘ON’ position unless otherwise
stated.

•

Damaged VCI II units should not be used and promptly replaced.

•

Be careful not to disconnect the VCI-II connected to the vehicle during the ECU upgrade
procedure.

•

DO NOT start the engine during ECU upgrade.

•

DO NOT turn the ignition key ‘OFF’ or interrupt the power supply during ECU upgrade.

•

When the ECU upgrade is completed, turn the ignition ‘OFF’ and wait 10 seconds before
starting the engine.

•

ONLY use approved ECU upgrade software designated for the correct application.

 IMPORTANT
It is recommended to ALWAYS check the Electronic Parts Catalog (EPC) to locate the ECU Part
Number respective to Auto/Manual Mode ROM IDs. DO NOT reference the parts label affixed to
the ECU.

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: TRA106 (Rev 1) Niro P/HEV (SG2 P/HEV) February 2023

Page 4 of 10

6-SPEED DCT JUDGEMENT LOGIC IMPROVEMENT /
SUBJECT:

GROUND BOLT TIGHTENING (P074A73)

ROM ID INFORMATION TABLE:
Upgrade Event #646

Model

EM

TM

Type

ROM ID

ECU P/No.

Previous

New

DSG2G16XXH955NS0
DSG2G16XXH967NS1
DSG2G16XXH967NS2
SBC

95441-2BGJ0

DSG2G16XXH974NS3

DSG2G16XXH092NS7

DSG2G16XXH015NS4
DSG2G16XXH015NS5
DSG2G16XXH049NS6
BSG2G16XXH955NS0
BSG2G16XXH967NS1
BSG2G16XXH967NS2
SBW

95441-2BGK0

BSG2G16XXH974NS3

BSG2G16XXH092NS7

BSG2G16XXH015NS4
SG2
HEV

BSG2G16XXH015NS5
1.6T

BSG2G16XXH049NS6

DCT

DSG2G16XXH967SS1
DSG2G16XXH967SS2
SBC

95441-2BGL0

DSG2G16XXH974SS3
DSG2G16XXH015SS4

DSG2G16XXH092SS7

DSG2G16XXH015SS5
DSG2G16XXH049SS6
BSG2G16XXH967SS1
BSG2G16XXH967SS2
SBW

95441-2BGM0

BSG2G16XXH974SS3
BSG2G16XXH015SS4
BSG2G16XXH015SS5
BSG2G16XXH049SS6

Continued on page 5…

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: TRA106 (Rev 1) Niro P/HEV (SG2 P/HEV) February 2023

BSG2G16XXH092SS7

Page 5 of 10

6-SPEED DCT JUDGEMENT LOGIC IMPROVEMENT /
SUBJECT:

GROUND BOLT TIGHTENING (P074A73)

Upgrade Event #646 (continued)

Model

EM

TM

Type

ECU P/No.

ROM ID
Previous

New

DSG2G16XXP967NS1
DSG2G16XXP967NS2
SBC

95441-2BGT0

DSG2G16XXP974NS3
DSG2G16XXP015NS4

DSG2G16XXP092NS7

DSG2G16XXP015NS5
SG2
PHEV

1.6T

DSG2G16XXP049NS6

DCT

BSG2G16XXP967NS1
BSG2G16XXP967NS2
SBW

95441-2BGV0

BSG2G16XXP974NS3
BSG2G16XXP015NS4

BSG2G16XXP092NS7

BSG2G16XXP015NS5
BSG2G16XXP049NS6

To verify the vehicle is affected, be sure to check the Calibration Identification of the vehicle's ECM ROM ID
and reference the Information Table as necessary.

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: TRA106 (Rev 1) Niro P/HEV (SG2 P/HEV) February 2023

Page 6 of 10

6-SPEED DCT JUDGEMENT LOGIC IMPROVEMENT /
SUBJECT:

GROUND BOLT TIGHTENING (P074A73)

 NOTICE
Prior to performing the ECU upgrade, be sure to check that the KDS is fully charged.
1.

Connect the VCI-II to the OBD-II connector,
located

under

the

driver’s

side

of

the

instrument panel.

 NOTICE
The ECU upgrade function on KDS
operates wirelessly. It is not necessary
to perform the upgrade via USB cable.

2.

With the ignition ON, turn ON the KDS tablet.
Select ‘KDS’ from the home screen.

3.

Confirm communication with VCI (A) and then