GROUP

NUMBER

AUTOMATIC
TRANSMISSION
DATE

Technical Service Bulletin
SUBJECT:

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

APRIL, 2023

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

This TSB supersedes TSB 22-AT-005H to add the Op Code for Santa Fe (TMa) 2.5L and revise
the Op Code for Santa Fe (TMa) 2.0T/2.4L.
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~
2019~20
2021~
2020~
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 (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 5NTJ***E
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~ 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
ALL

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 A (UD)

46313B

46313-4G***

P075800 Shift solenoid B (46)

46313C

46313-4G***

P076300 Shift solenoid C (37R)

46313C

46313-4G***

P076800 Shift solenoid D (OD&LR)

46313B

46313-3B***

P077300 Shift solenoid E (28)

46313C

46313-4G***

P270900 Shift control solenoid valve F (SSA)

46313D

46313-3B***

46307

46307-4G***

45282E

45283-4G***

Valve body internal harness
Oil pan gasket

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

SUBJECT:

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

WARRANTY INFORMATION:
MODEL

OP CODE OPERATION

2018~19 Sonata (LFa) 2.0T

45775R00

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

45775R8M

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

45775R8L

ALL

45775RQ0

Solenoid
replacement

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: Normal warranty applies

SERVICE PROCEDURE:
1.

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

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.

TSB #: 23-AT-003H

Page 2 of 10

SUBJECT:

3.

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

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) with
separate ECU and TCU.

4.

Refer to the DTC recorded in Step 1 and follow the repair procedure shown below:
P074100
P074300
P074800
P075300
P075800
P076300
P076800
P077300
P270900

DTC
Torque converter clutch system
Torque converter (T/C)
Pressure control solenoid (P/C)
Shift solenoid A (UD)
Shift solenoid B (46)
Shift solenoid C (37R)
Shift solenoid D (OD&LR)
Shift solenoid E (28)
Shift solenoid F (SSA)

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

REPAIR PROCEDURE

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

5.

Record the preset radio stations.
Remove the battery and battery tray.

6.

Remove the undercover below the transmission.
Lift the vehicle on a hoist.

7.

If necessary to access the solenoids, drain the radiator and remove the lower radiator hose
from the radiator.
Drain the ATF.

8.

Disconnect the harness from the transmission.
Remove the bolt that secures the tab and push
the harness connector into the transmission.
Disconnect the vent hose on the top of the oil
pan.

TSB #: 23-AT-003H

Page 3 of 10

SUBJECT:

9.

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

Remove 14 oil pan bolts and remove the pan.

CAUTION
Use a rubber hammer to tap the oil
pan cover on a corner until the cover
is loose.

10. Remove 6 bolts to the harness and 1 bolt to
the oil temperature sensor.
Pull the harness outward and move the
harness out of position.

11. Remove the bolt that secures the detent spring
and remove the spring.
Torque: 8~11 lb.ft (1.2~1.5 kgf.m/10~13 N.m)

TSB #: 23-AT-003H

Page 4 of 10

SUBJECT:

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

12. Remove 9 valve body bolts in order from the
outermost bolts to the innermost bolts.
Remove the valve body.

CAUTION
Place the valve body on a clean paper
towel. Placing the valve body on a rag
may cause lint to enter the valve body.

13. Pull the gray tab up and then press the tab to
disconnect the harness from the input speed
sensor.
Remove the harness and install a new
harness.
Reconnect the new harness to the input speed
sensor.

14. Record the 8-digit code on the solenoid.

15. Refer to the DTC recorded in Step 1 and
replace the related solenoid.
DTC
P074100
P074300
P074800
P075300
P075800
P076300
P076800
P077300
P270900

TC
TC
PC
UD
46
37R
OD&LR
28
SSA

TSB #: 23-AT-003H

SOLENOID
TC clutch
TC solenoid
Pressure control
Shift solenoid A (UD)
Shift solenoid B (46)
Shift solenoid C (37R)
Shift solenoid D (OD&LR)
Shift solenoid E (28)
Shift solenoid F (SSA)

28

UD

46
OD&LR

37R

SSA
TC
PC

Page 5 of 10

SUBJECT:

AUTOMATIC TRANSAXLE SOLENOID DTC P074100, P074300,
P074800, P075300, P075800, P076300, P076800, P077300 & P270900
16. For 28, 46, 37R, UD, OD&LR solenoids:


Remove two bolts to the upper solenoid
support. Remove the support.
 Use a magnet to remove the pin for the
solenoid to be replaced.
 Remove the solenoid and install a new
solenoid.
 Reinstall the pin.
 Reinstall the support and tighten to
specification.
Torque: 7~9 lb.ft (1.0~1.2 kgf.m/10~12 N.m)

28

UD

46

OD&LR
37R

17. For SSA, TC and PC solenoids:


Use a 5mm hex socket and remove 3 Allen
bolts that secure the solenoid support.
Remove the support.



Remove the solenoid and install a new
solenoid.



Reinstall the support and tighten the Allen
bolts.

18. Confirm two O-rings are installed correctly in
the case.

TSB #: 23-AT-003H

Page 6 of 10

SUBJECT:

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

19. Align the manual shaft to the shift lever and
install the valve body.

20. Install the valve body bolts and torque the bolts
in order from the innermost bolts to the
outermost bolts.
Torque: 7~9 lb.ft (1.0~1.2 kgf. m/10~12 N.m)

21. Reinstall the bolt that secures the detent spring
and tighten the bolt to specification.
Torque: 8~11 lb.ft (1.2~1.5 kgf.m/10~13 N.m)

TSB #: 23-AT-003H

Page 7 of 10

SUBJECT:

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

22. Reconnect the harness to the solenoids and
install the temperature sensor.
Install 6 bolts to the harness and 1 bolt to the
oil temperature sensor and torque to
specification.
Torque: 7~9 lb.ft (1.0~1.2 kgf.m/10~12 N.m)

23. Install a new gasket, P/N 45283-4G*** to the
oil pan and reinstall the pan.
Install 14 bolts to the pan and tighten the bolts
to specification.
Torque: 8~10 lb.ft (1.2~1.4 kgf.m/12~13 N.m)

24. Reinstall the lower radiator hose. Add ethylene glycol engine coolant to the radiator and check
the level according to the appropriate shop manual, “Engine” Section.
25. Reconnect the battery.
Input the radio stations recorded in Step 5.

TSB #: 23-AT-003H

Page 8 of 10

SUBJECT:

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

26. Remove the transaxle fill plug.
Use a funnel to add approximately 5~6 quarts
of SP4-M ATF through the fill plug opening.
Reinstall the fill plug.
Attach the GDS and select Data Analysis, A/T
menu and Oil Temperature Sensor.
Start the engine and shift to Park. When the
ATF is 122°F~140°F (50~60°C), remove the
level checking plug. The level is correct when
oil flows out of the level checking plug in a thin
steady stream.
Collect and dispose of any excess fluid in
accordance with local regulations.
27.

Clear the DTC and test drive the vehicle for two key-on/key-off driving cycles, including
1-2-3-4-5-6-7-8 upshifts and 8-7-6-5-4-3-2-1 downshifts.
If the DTC returns, perform the following repairs.
DTC
P074100
P074300
P074800
P075300
P075800
P076300
P076800
P077300
P270900

REPAIR PROCEDURE
Replace the transmission

Replace the control wiring harness between the PCM or TCU and
transmission.
 If the solenoid DTC does not return, return the vehicle to the customer.
 If the solenoid DTC returns again, replace the PCM or TCU.
NOTE: All listed vehicles have a PCM (integrated ECU/TCU) except Sonata
(DN8a) with separate ECU and TCU.

Solenoid Oil Pressure Data Characteristics Input:

NOTICE
This procedure is necessary only for the following solenoids: UD, 37R, OD&LR, 28
and 46.
28. Select S/W Management, Automatic
Transaxle and Oil Pressure Characteristics
Input (Solenoid valve Replacement). Select
OK and follow the prompts.
Select the type of solenoid from the drop-down
menu. Select OK.

TSB #: 23-AT-003H

Page 9 of 10

SUBJECT:

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

29. Input the 8-digit code recorded in Step 14 in
the blank spaces in the GDS. Select OK.
Input the 8 digit code again and select OK.
The GDS will confirm the procedure was
completed.

30. Drive the vehicle for two key cycles to confirm the transmission shifts correctly and no DTC are
set.

TSB #: 23-AT-003H

Page 10 of 10