GROUP

NUMBER

AUTOMATIC
TRANSMISSION
DATE

Technical Service Bulletin
SUBJECT:

AUGUST 2023

23-AT-003H-1
MODEL
SONATA (LFa)
SANTA FE (TMa)
PALISADE (LX2)
SANTA CRUZ (NXT)
SONATA (DN8a)
TUCSON (NX4/NX4a)

AUTOMATIC TRANSAXLE SOLENOID DTC P074100, P074300,
P074800, P075300, P075800, P076300, P076800, P077300 & P270900

This TSB supersedes TSB 23-AT-003H to add Tucson (NX4) and revise the Parts Information.
DESCRIPTION: If you are servicing an 8-speed vehicle with a “Check Engine” light on and one or
more of the DTC listed, follow the service procedure and replace the related solenoid and harness.
APPLICABLE VEHICLES:
2018~19
2020~22
2019~20
2021~
2020~
2022~
2022~
2022~

Sonata (LFa) 2.0T
Sonata (DN8a) 1.6T/2.5L
Santa Fe (TMa) 2.0T/2.4L
Santa Fe (TMa) 2.5L
Palisade (LX2) 3.8L
Santa Cruz (NXT) 2.5L
Tucson (NX4) 2.5L
Tucson (NX4a) 2.5L

VINs beginning with 5NP
VINs beginning with 5NP
VINs beginning with 5NM
VINs beginning with 5NM
VINs beginning with KM8
VINs beginning with 5NT
VINs beginning with KM8
VINs beginning with 5NM

PARTS INFORMATION:
Refer to the PNC in the parts catalog to order the correct solenoid part number.
MODEL
2018~19 Sonata
(LFa) 2.0T
2020~22 Sonata
(DN8a) 1.6T/2.5L
2019~ Santa Fe
(TMa) 2.0T/2.4L/2.5L
2020~ Palisade
(LX2) 3.8L
2022~ Santa Cruz
(NXT) 2.5L
2022~ Tucson
(NX4a) 2.5L

DTC

PART

PNC

PART NUMBER

P074100 Torque converter clutch system

46202A

46313-3B***

P074300 Torque converter clutch circuit

46202A

46313-3B***

P074800 Pressure control solenoid (PC)

46313A

46313-3B***

P075300 Shift solenoid (UD)

46313C

46313-4G***

P075800 Shift solenoid (46)

46313B

46313-4G***

P076300 Shift solenoid (37R)

46313B

46313-4G***

P076800 Shift solenoid (OD&LR)

46313C

46313-4G***

P077300 Shift solenoid (28)

46313B

46313-4G***

P270900 Shift control solenoid valve (SSA)

46313D

46313-3B***

46307

46307-4G***

45282E

45283-4G***

Valve body internal harness
ALL
Oil pan gasket

Circulate To: Service Manager, Warranty Manager, Service Advisors, Technicians, Fleet Repair

AUTOMATIC TRANSAXLE SOLENOID DTC P074100, P074300,
P074800, P075300, P075800, P076300, P076800, P077300 & P270900

SUBJECT:

WARRANTY INFORMATION:
MODEL

OP CODE OPERATION

2018~19 Sonata (LFa) 2.0T

45775R00

2020~22 Sonata (DN8a) 1.6T/2.5L
2022~ Santa Cruz (NXT) 2.5L
2022~ Tucson (NX4/NX4a) 2.5L
2021~ Santa Fe (TMa) 2.5L

Solenoid
45775R8M
replacement

2019~20 Santa Fe (TMa) 2.0T/2.4L
2020~ Palisade (LX2) 3.8L

45775R8L

ALL

45775RQ0

OP TIME

CAUSAL
PART

Refer to
WEBLTS
for current
LTS time

Refer to
Parts
Information
table on
Page 1

NATURE CAUSE
CODE
CODE

I3A

ZZ3

GDS

NOTE 1: Normal warranty applies.
NOTE 2: Submit claim on Claim Entry Screen as “Warranty” type.
NOTE 3: Refer to the latest Digital Documentation Policy for repair validation
requirements.
NOTE 4: The incident parts are subject to callback through the normal Warranty Technical
Center (WTC) parts return process. Claim is subject to debit if the part is not returned.
NOTE 5: If a part is found in need of replacement while performing this TSB 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.
SERVICE PROCEDURE:

STUI
Refer to the latest Warranty Digital Documentation Policy for requirements.

1.

Attach a GDS and select DTC Analysis and A/T menu. Record the DTC and description.
Delete the DTC.

TSB #: 23-AT-003H-1

Page 2 of 10

SUBJECT:

AUTOMATIC TRANSAXLE SOLENOID DTC P074100, P074300,
P074800,,P075300, P075800, P076300, P076800, P077300 & P270900

2.

From the GDS home screen, select Data Analysis and A/T menu and the solenoid parameters
shown below. If the solenoids show:
• Continuous and changing output while driving, the wiring currently has no open/short
circuits. Go to Step 4.
• No continuous and changing output, go to Step 3.

3.

Visually check the wiring harness between the PCM or TCU and transmission for a damaged
wire or open/short circuit. Check for a damaged pin or pin not fully inserted into the connector.
• If damage exists, repair or replace the ECM control harness and drive the vehicle to confirm
the repair.
• If no damage or open/short circuit is found, go to Step 4.
NOTE: All listed vehicles have a PCM (integrated ECU/TCU) except Sonata (DN8a) 1.6T and
Palisade (LX2) with separate ECU and TCU.

4.

Refer to the DTC recorded in Step 1 and follow the repair procedure shown below:
DTC

PNC

P074100

Torque converter clutch
system

46202A

P074300
P074800
P075300
P075800
P076300
P076800
P077300
P270900

Torque converter (T/C)
Pressure control solenoid (PC)
Shift solenoid (UD)
Shift solenoid (46)
Shift solenoid (37R)
Shift solenoid (OD&LR)
Shift solenoid (28)
Shift solenoid (SSA)

46202A
46313A
46313C
46313B
46313B
46313C
46313B
46313D

TSB #: 23-AT-003H-1

REPAIR PROCEDURE
For 2919~20MY Santa Fe (TMa) 2.4L: Follow
TSB 23-AT-005H and update the TCU. If
P0741returns, Go to Step 5 and replace the
related solenoid and valve body harness.

Go to Step 5 and replace the related solenoid
and valve body harness

Page 3 of 10

AUTOMATIC TRANSAXLE SOLENOID DTC P074100, P074300,