ATTENTION:
GENERAL MANAGER

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PARTS MANAGER

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CLAIMS PERSONNEL

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IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
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SERVICE MANAGER

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© 2023 Subaru of America, Inc. All rights reserved.

SERVICE BULLETIN
APPLICABILITY:
SUBJECT:

2019-23MY Ascent

NUMBER: 16-144-23

DTC P0711, P0712, P0713 Diagnostic Procedure

DATE:

11/08/23

INTRODUCTION:
This bulletin announces the availability new service procedure developed for the diagnosis of the
following DTCs detected by the Transmission Control Module (TCM):
•

P0712 (Transmission Fluid Temperature Sensor “A” Circuit Low)

•

P0713 (Transmission Fluid Temperature Sensor “A” Circuit High)

This new procedure will be included in the Service Manual in the future. In addition, new
reprogramming files have been developed to address DTC P0711 (Transmission Fluid Temperature
Sensor “A” Circuit Range/Performance). If the DTCs listed above are detected by the TCM, follow
the service procedures outlined below.
PAK FILE APPLICABILITY:
MY

19

20-21

22

Specification

File Description

Old Part #

Decryption Keyword

New CID

2.4L DIT
CVT
Without CVTF Cooler

30919AF98G.pak

30919AF98D
30919AF98E
30919AF98F

6CB17BE5

R83EE000

2.4L DIT,
CVT
With CVTF Cooler

30919AF99G.pak

30919AF99D
30919AF99E
30919AF99F

1648933C

R83EF000

2.4L DIT
CVT
Without CVTF Cooler

30919AH13H.pk2

30919AH13E
30919AH13F
30919AH13G

B3DFD2E3

Q93EE100

2.4L DIT,
CVT
With CVTF Cooler

30919AH14H.pk2

30919AH14E
30919AH14F
30919AH14G

B5D0FB3D

Q93EF100

2.4L DIT
CVT
Without CVTF Cooler

30919AJ53C.pk2

30919AJ53A
30919AJ53B

C7FDE264

N2FEE700

2.4L DIT,
CVT
With CVTF Cooler

30919AJ54C.pk2

30919AJ54A
30919AJ54B

E64CC4D4

N2FEF700

CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS COULD
RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS.
Subaru Service Bulletins are intended for use by professional technicians ONLY. They
are written to inform those technicians of conditions that may occur in some vehicles,
or to provide information that could assist in the proper servicing of the vehicle. Properly
trained technicians have the equipment, tools, safety instructions, and know-how to
do the job correctly and safely. If a condition is described, DO NOT assume that this
Service Bulletin applies to your vehicle, or that your vehicle will have that condition.

Subaru of America, Inc. is
ISO 14001 Compliant
ISO 14001 is the international standard for
excellence in Environmental Management
Systems. Please recycle or dispose of
automotive products in a manner that is friendly
to our environment and in accordance with all
local, state and federal laws and regulations.

Continued...
Bulletin Number: 16-144-23; Date: 11/08/23

Page 1 of 6

PFC FILE APPLICABILITY:
Model
Ascent

MY
23

File Description

Old Part #

New CID #

30919AJ79B.pfc

30919AJ79A

M3FEE60000L

30919AJ80B.pfc

30919AH80A

M3FEF60000L

Detailed information regarding the SSM5-R reprograming procedures can be found in TSB 14-28-21.
SERVICE PROCEDURE / INFORMATION:
STEP 1: Perform a DTC check using Subaru Select Monitor (SSM). Is DTC P0711 detected by the
TCM?
YES: Proceed to STEP 2.
NO: If DTCs P0712 and or P0713 are stored, proceed to STEP 7. If any DTCs not mentioned in
the bulletin are found, continue diagnosis as per the applicable Service Manual.
STEP 2: Perform the reprogramming procedure outlined in STEP 6, when complete, perform the
“INSPECTION MODE B” to verify the faults are not detected. Is P0711 detected?
YES: Proceed to STEP 3.
NO: The procedure is complete.
STEP 3: Read the Freeze Frame Data (FFD) of DTC P0711. See the example below.

Is the ATF temperature less than 68°F?
YES: Proceed to STEP 4.
NO: Proceed to STEP 7.
STEP 4: Check the current ATF temperature data monitor using SSM. See the example below.

Continued...
Bulletin Number: 16-144-23; Date: 11/08/23

Page 2 of 6

Is the current temperature less than 68°F?
YES: Proceed to STEP 5.
NO: The fault has been inaccurately detected. Clear ALL DTCs and perform a road test to
confirm no DTCs return. Follow the “INSPECTION MODE B” road test procedures
outlined in STIS: DIAGNOSTICE > TRANSMISSION (DIAGNOSTICS) >
Inspection Mode.
STEP 5: Start the engine and allow it to idle for at least five minutes while monitoring the ATF
temperature. Does the temperature increase at least 3.6°F from the value observed in STEP 4?
YES: The fault has been inaccurately detected. Clear ALL DTCs and perform a road test to
confirm no DTCs return. Follow the “INSPECTION MODE B” road test procedures
outlined in STIS: DIAGNOSTICE > TRANSMISSION (DIAGNOSTICS) > Inspection
Mode.
NO: Proceed to STEP 7.
STEP 6: Reprogram the TCM following the normal FlashWrite procedure. Once reprogramming
is complete, perform a road test to confirm no DTCs return. Follow the “INSPECTION MODE B”
road test procedures outlined in STIS: DIAGNOSTICE > TRANSMISSION (DIAGNOSTICS) >
Inspection Mode. If no DTCs return, the service procedure is complete.
NOTE: Detailed information regarding battery power supply for reprogramming can be found in the
Appendix A section of this bulletin.
STEP 7: Further diagnosis of P0712 and/or P0713 is required. Listed below are the service
procedures outlined in the Service Manual including the revised corrections. The corrections have
been outlined in RED. Follow the applicable diagnosis and perform the necessary repair as per the
applicable Service Manual.
P0712 DIAGNOSIS:
4. CHECK ATF TEMPERATURE SENSOR.
Measure the resistance between transmission connector terminals.
Connector and terminal
(T19) No. 4 — (T19) No. 16:
Perform the measurements using multiple oil temperatures.
Is resistance as follows?
Fluid temperature 0°C → Approx. 6.2 kΩ
Fluid temperature 20°C → Approx. 2.6 kΩ
Fluid temperature 80°C → Approx. 370

Ω
Continued...

Bulletin Number: 16-144-23; Date: 11/08/23

Page 3 of 6

Replace the TCM.
Module (TCM)

CONTINUOUSLY VARIABLE TRANSMISSION(TR690)>Transmission Control

Replace the control valve body Transmission Harness.
TRANSMISSION(TR690) > Transmission Harness

CONTINUOUSLY VARIABLE

P0713 DIAGNOSIS:
5. CHECK ATF TEMPERATURE SENSOR.
Measure the resistance between transmission connector terminals.
Connector and terminal
(T19) No. 4 — (T19) No. 16:
Does the resistance value increase gradually while the ATF temperature decreases?
6
Replace the control valve body Transmission Harness.
TRANSMISSION(TR690) > Transmission Harness

CONTINUOUSLY VARIABLE

WARRANTY / CLAIM INFORMATION:
For vehicles within the Basic New Car Limited or Powertrain Warranty period or covered by a
Subaru Added Security Powertrain, Classic or Gold plan, this repair may be submitted using the
following claim information:
Labor Description

Labor Operation #

Fail Code

Labor Time

TCM Reprogramming

A860-737

MJZ-48

0.5

IMPORTANT: The NEW Calibration Identification number (CID) for any newly-installed
programming (as confirmed from the actual control module AFTER installation) MUST be noted on
the repair order as this information is required for claim submission.
NOTE: The pak file listings provided in this bulletin are the latest available at the time of
publishing. Updates are often released thereafter without revision to the original bulletin. For this
reason, it is critical to always have the latest version of Select Monitor software installed on your
system. Technicians can confirm if a later version is available by entering the CID listed in this
bulletin into FlashWrite. If a newer CID is shown as available in FlashWrite, reprogram using that
file.
IMPORTANT REMINDERS:
•

SOA strongly discourages the printing and/or local storage of service information as
previously released information and electronic publications may be updated at any time.

•

Always check for any open recalls or campaigns anytime a vehicle is in for servicing.

•

Always refer to STIS for the latest service information before performing any repairs.
Continued...

Bulletin Number: 16-144-23; Date: 11/08/23

Page 4 of 6

Appendix A
Subaru of America, Inc. (SOA) highly recommends utilizing either the Subaru Midtronics DCA8000
Dynamic Diagnostic Charging System or the Subaru Midtronics GR8-1100 Diagnostic Battery
Charger to the vehicle in the Power Supply Mode feature anytime a vehicle control module is
being reprogrammed. Once the Midtronics charger is connected to the vehicle, if the battery is fully
charged, it will take less than three (3) minutes to boot up the charger, select the Power Supply Mode,
and have the battery voltage stabilized and ready for reprogramming.

NOTES:
•

For instructions on using the Power Supply Mode, reference the applicable User Manual for
the Midtronics DCA-8000 Dynamic Diagnostic Charging System and the Midtronics GR81100 Diagnostic Battery Charger on STIS.

•

Confirm all electrical loads such as lights, audio, HVAC, seat heaters, and rear defroster are all
switched OFF before setting up the charger for Power Supply Mode.

•

Select the correct battery type (Enhanced Flooded, Flooded, Gel, AGM, or AGM Spiral).

•

Input the CCA which matches the vehicle’s battery. NOTE: OE and replacement batteries
have different CCA ratings. Always confirm the battery’s CCA rating before proceeding.

•

If using a DCA-8000 Dynamic Diagnostic Charging System, set the power supply voltage to
13.5 Volts.

•

DO NOT connect the DST-i or DST-010 until the Power Supply mode function has completed
its battery test mode and the Charging Voltage has dropped to and shows a steady 13.5 Volts on
the display.

•

Once Power Supply Mode reaches a steady 13.5 Volts, connect the DST-i or DST-010 to the
OBD connector and proceed with initiating the normal FlashWrite reprogramming process.

•

Amperage will fluctuate based upon the vehicle’s demand for power. NOTE: If the voltage
rises beyond 14 Volts while programming is in process, the procedure will abort. This can
indicate a need to test or charge the vehicle battery before any further attempt at programming
is made.

•

ALWAYS set the power supply voltage to 13.5 Volts when using Power Supply Mode. NEVER
turn the ignition switch on when charging at voltages 15 Volts or higher.

VERY IMPORTANT:
This information is applicable to the Subaru Midtronics DCA-8000 Dynamic Diagnostic Charging
System and the Subaru Midtronics GR8-1100 Diagnostic Battery Charger ONLY. It does not apply
to any other brand/type of “generic” battery charger whatsoever. ONLY the DCA-8000 and the GR81100 and their Power Supply Mode feature have been tested and approved by SOA.
Continued...
Bulletin Number: 16-144-23; Date: 11/08/23

Page 5 of 6

REMINDER: If the DCA-8000 or GR8-1100 indicates the vehicle’s battery must be charged, charge
it fully using the DCA-8000 or GR8-1100 before proceeding to reprogram the vehicle using the
Power Supply Mode.
NOTE: Control module failures resulting from battery discharge during reprogramming are not a
matter for warranty. Should any DTCs reset after the reprogramming update is performed, diagnose
per the procedure outlined in the applicable Service Manual.

Bulletin Number: 16-144-23; Date: 11/08/23

Page 6 of 6