GROUP

NUMBER

AUTOMATIC
TRANSMISSION

20-AT-003H

DATE

Technical Service Bulletin

MODEL
SONATA (LFA)/DN8
JANUARY, 2020
SANTA FE (TMA)
PALISADE (LX2)

AUTOMATIC TRANSAXLE INPUT/OUTPUT SPEED SENSOR
DTC P071700, P072100 & P072200

SUBJECT:

This TSB supersedes TSB 19-AT-018H to add the Sonata (DN8).
Description: If you are servicing an applicable vehicle with a “Check Engine” light on and one or
more of the DTC listed below, follow the repair procedure and replace the related input/output
speed sensor and oil pressure harness.
Applicable Vehicles:
2018~19
2020~
2019~
2020~

Sonata (LFA) 2.0T
Sonata (DN8) 1.6T/2.5L
Santa Fe (TMA) 2.0T/2.4L
Palisade (LX2) 3.8L

Parts Information:
Refer to the PNC in the parts catalog to order the correct part numbers.
MODEL

DTC

PART

PNC

PART NUMBER

42620

42620-4G***

46307

46307-4G***

45282E

45283-4G***

P071700 Input/Turbine speed sensor A
circuit low input
2018~19 Sonata (LFa) 2.0T
2020~ Sonata (DN8) 1.6T/2.5L
2019~ Santa Fe (TMa) 2.0T/2.4L
2020~ Palisade (LX2) 3.8L

P072100

Output speed sensor A circuit
range/performance

P072200

Output speed sensor A circuit
no signal

ALL

Valve body harness
Oil pan gasket

Warranty Information:
MODEL

OP CODE

2018~19 Sonata (LFA) 2.0T
2019~ Santa Fe (TMA)

45644R00

2020~ Palisade (LX2)

45644R8L

2020~ Sonata (DN8)

45644R8M

ALL

45644RQ0

OPERATION

OP TIME

CAUSAL
PART

Input/output
speed sensor

Refer to
WEBLTS
for current
LTS time

Refer to
Parts
Information
Table avove

NATURE CAUSE
CODE
CODE

I3A

ZZ3

GDS Operation

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

SUBJECT:

ATM INPUT/OUTPUT SPEED SENSOR DTC P071200, P072100 & P072200

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 sensors shown
below. If the sensors 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 ECU 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 ECU control harness and drive the vehicle to confirm
the repair.
 If no damage or open/short circuit is found, go to Step 4.

4.

Refer to the DTC recorded in Step 1 and follow the repair procedure shown below:
DTC
P071700
P072100
P072200

DESCRIPTION
Input/turbine speed sensor A circuit no signal
Output speed sensor circuit range/performance
Output speed sensor circuit no signal

REPAIR PROCEDURE
Go to Step 5 and replace the
input/output speed sensor and
valve body harness.

5.

Record the preset radio stations.
Remove the air cleaner, battery and battery tray.

6.

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

7.

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

TSB #: 20-AT-003H

Page 2 of 7

SUBJECT:

8.

ATM INPUT/OUTPUT SPEED SENSOR DTC P071200, P072100 & P072200

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

9.

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.

TSB #: 20-AT-003H

Page 3 of 7

SUBJECT:

ATM INPUT/OUTPUT SPEED SENSOR DTC P071200, P072100 & P072200

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)

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 two bolts and remove the input speed
sensor. Install a new input speed sensor.
Remove the harness and install a new
harness.
Connect the harness to the input speed
sensor.
Torque: 7~9 lb.ft (1.0~1.2 kgf.m/10~12 N.m)

TSB #: 20-AT-003H

Page 4 of 7

SUBJECT:

ATM INPUT/OUTPUT SPEED SENSOR DTC P071200, P072100 & P072200

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

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

16. 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)

TSB #: 20-AT-003H

Page 5 of 7

SUBJECT:

ATM INPUT/OUTPUT SPEED SENSOR DTC P071200, P072100 & P072200

17. 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)

18. Reconnect the solenoid harness to the
solenoids and install the oil 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)

19. Install a new gasket to the oil pan and reinstall
the pan.
Install 14 bolts to the pan and tighten the bolts
to specification.
Torque: 6~7 lb.ft (0.9~1.0 kgf.m/8~9 N.m)

TSB #: 20-AT-003H

Page 6 of 7

SUBJECT:

ATM INPUT/OUTPUT SPEED SENSOR DTC P071200, P072100 & P072200

20. Attach the lower radiator hose, add ethylene glycol engine coolant to the radiator and check the
level according to the appropriate shop manual, “Engine” Section.
21. Reconnect the battery.
Input the radio stations recorded in Step 5.
22. 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 at the low end of 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.
23.

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
P071700
P072100

REPAIR PROCEDURE

Replace the control wiring harness between the PCM and transmission.
 If the DTC does not return, return the vehicle to the customer.
 If the DTC returns again, replace the PCM.

P072200 .

24. Clear the DTC in the Blue Link system per instructions of TSB 12-BE-005-2.
25. Drive the vehicle to confirm the transmission is operating as designed.

TSB #: 20-AT-003H

Page 7 of 7