LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2020 >> Outback Base >> Repair and Diagnosis >> Quick Lookups >> Technical Bulletins >> Tech Tips >> Other Variant >> Engine Control Systems >> Tech Tips October 2020 (TIPS1020)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Tech Tips October 2020 (TIPS1020)

WARNING: This page is about the Outback Limited XT, which is a different variant/trim than selected.
Publication date: 2020-10-01
Reference number: TIPS1020

TECH TIPS OCTOBER 2020

TECH TIPS OCTOBER 2020

TECHNICAL INFORMATION TIPS

Reference Number(s): TIPS1020, Date of Issue:  October 01, 2020
SUBARU: All Models

01 QMR OF THE MONTH

We are pleased to announce this month's QMR of the Month Winner:

G13308102

August's QMR of the Month winning report outlines the diagnosis and repair of a 2020 Outback with a customer concern of the engine running rough and making an unusual "clanking-type" sound after started cold. Thomas began by verifying the customer concerns as reported and noted both the roughness and clanking sound conditions dissipated after catalyst warm-up was complete. Since there were warning lamps illuminated, he performed a DTC scan which revealed a cylinder #1 misfire and determined the engine sound was a result of combustion occurring inside the exhaust manifold/front pipe assembly. Normal diagnostics were performed to isolate the cause of the P0301 but, nothing solid was identified. Thomas went further with compression and leak-down testing, inspection of VVT data, even valve clearance checks but all his test results were found to be within specification. Because the conditions could only be verified during warm-up after a cold start, Thomas turned his attention to the TGV system and proceeded to remove the intake manifold. The TGV diverter plates found in the cylinder head intake ports for cylinders 2 and 4 were identical but, after removing the diverter plates for cylinders 1 and 3, he found the plate removed from #1 was quite a different shape than the other 3. The odd-shaped TGV diverter plate was contacting the top of the cylinder head port and as a result, significantly restricting airflow during cold engine TGV operation. The restriction was causing #1 cylinder to run lean and the unburned fuel to combust in the exhaust manifold resulting in the clanking sound. After installing a correct TGV diverter plate, normal engine operation was restored. Thomas' QMR included detailed descriptions of all his diagnostic procedures, test results, high-quality photos and an excellent video to document this unusual discovery and repair.

In appreciation for going the extra mile and sharing his experience with us, Thomas will be receiving the following from his Field Service Engineer:

G13308103

The other Regional winners selected from QMRs submitted during August 2020 were:

Any Subaru Technician can participate in the QMR of the Month program. See the February 2013 and January 2016 issues of Tech TIPS for full details. You just might see your name and photo in a future issue of Tech TIPS!

01 QMR OF THE MONTH AWARD PRESENTATIONS

As part of our "enhanced" QMR of the Month recognition program, we will include a photo (whenever available) of the recipient's award presentation in TIPS. The winner selected from QMR of the Month submissions received during August 2020 was Thomas Slaughter, a Subaru Senior Master Technician from Motor Mile Subaru in Christiansburg, VA.

G13308104

Thomas is shown above after being presented with his $500.00 Snap-On Gift Card. Joining him (left to right) are Subaru of America (SOA) Field Service Engineer Daniel Jackson, Motor Mile Subaru's Fixed Operations Director Rocky Fizzano and Service Manager Michael Sowers along with SOA District Parts and Service Manager Alex Adkins. 

Congratulations and THANK YOU to our August 2020 QMR of the Month Award recipient! 

01 SUBARU EXPRESS SERVICE - LOW-TOUCH BEST PRACTICES FOR TECHNICIANS

The Subaru Express Service Team has developed a set of low-touch best practices for Express Service Technicians performing work on customer vehicles during this pandemic. These best practices are meant to provide Express Service Technicians and customers a safe, clean experience.

01 OIL CAPACITY

The Techline and Customer Advocacy Department (CAD) have received calls from customers with concerns about their vehicle being overfilled after an oil change has been performed.

NOTE: some newer model year vehicles have a lower oil capacity than prior year models. Please refer to the chart below. Technicians should be allowing adequate drain time to allow for more accurate dipstick readings. Always be sure to double check oil levels before releasing the vehicle to the customer. This chart may be found on Subarunet under Parts/Service-Prgms/Accessories \ Oil Programs \ Oil Charts/Resources tab. 
G13308105

01 CPO PROCEDURE FOR TURBOCHARGED SUBARU VEHICLES

Techline has observed a surge in Certified Pre-Owned (CPO) submissions with the increased number of turbocharged engines across multiple platforms. As part of the CPO program, turbocharged vehicles require the Calibration Identification/Calibration Verification Numbers (CID/CVN) to be checked before enrollment. Due to the high number of inquiries to Techline, we felt it necessary to remind retailers of the correct CPO procedures. To help serve retailers in a timely manner, please review the CPO process and expectations using the provided instructions below. Incorrect submissions will delay the process for all parties involved. Responses to CPO requests are returned within a 24hr time period. Holidays & weekends may affect return times.

1 Vehicle Information Acquisition screen 

Please be sure to obtain a clear, crisp image of the vehicle information acquisition screen. An example is shown below. Please DO NOT submit any hand written information. Vehicle Information Sheets (VIS) or a copy of the Repair Order (RO) are also unacceptable. This information should ONLY be obtained using the Subaru Select Monitor. Pictures taken with a cell phone are acceptable as long and the information can be clearly read.

SSM4 instruction on obtaining the acquisition screen.

G13308106
G13308107
G13308108
G13308109
G13308110

2 Email submission instructions 

Submitting a CPO CID/CVN request is just like calling Techline. A case needs to be opened with credible information. This information includes: your full name, dealer code, and a contact number. You will always receive the confirmation email from the account you submitted it by. Always submit a CPO request from an email account that you have access to and check regularly. The email address to submit the CPO request is Tech@subaru.com. When following the Send-SSM4 document instructions on Subarunet it is displayed as "tech support". Here is an example of properly submitted email.

G13308111

07 G AND H TYPE IMMOBILIZER REGISTRATION

Techline continues to receive calls regarding 20MY Legacy and Outback Immobilizer registration. When adding keys, programming a remote start, or making immobilizer system repairs to a G/H type system an 8-digit "Authentication Key" is required. As a reminder, this new Authentication Key will change approximately every 6 months. For detailed information and latest Authentication Key, refer to TSB 15-246-19R.  Bellow is The Application Chart for Immobilizer for reference to the varying types of immobilizers.

G13308112

07 IDENTICAL ELECTRICAL CONNECTORS

Most electrical connectors in Subaru vehicles have unique designs which allow them to be plugged in to only one component. However, this does not apply to all connectors. Some connectors have the same physical shape and will connect to multiple components. These connectors don't always have the same power, ground, or signal pins. If the component receives the incorrect circuit path, the component could be damaged. This is very common when installing Keyless Access Control Modules. Below are some examples of identical connectors for different components.

G13308113
G13308114

10 2020+ LEGACY/OUTBACK PASSENGER AIR MIX AND INTAKE AIR DOOR ACTUATORS

Techline recently received a call regarding a concern of the passenger side HVAC always blowing hot air. The Technician found DTC B1441 "Air Mix door actuator circuit stuck (Passenger)". After following the DTC trouble tree the Technician found the passenger air mix door actuator required replacement. Following replacement of the actuator the Tech found the condition was still present. Upon further inspection the Tech determined both the air mix door actuator (i190) and the intake door actuator (i188) connectors are the same. After moving the connectors to their correct locations normal HVAC operation was restored.

There are two key differences to note when servicing these connectors.

  1. The 5 wires for i190 connector are V, W, Sb, P and Br. The 5 wires for the i188 connector are V, P, Sb, Or and V.
  2. The coverings for each harness have some key differences as well, the i190 connector has a soft tubing and the i188 connector has a hard plastic-corrugated tubing.

Bellow is each connector in the correct locations on the left i190 Air mix door actuator, Right i188 intake air door actuator.

G13308115
G13308116

16 AUTOMATIC TRANSMISSION FLUID TYPES

Techline has received some calls with questions regarding automatic transmission fluid types. Fluid types can be found in the appropriate Service Manual under General Description>Recommended Materials. Below is a handy chart to help know what transmission fluid type is required for each vehicle as well.

NOTE: All fluid amounts below are capacities from dry and capacities within brackets are applicable for vehicles equipped with oil coolers. This chart may be found on Subarunet under Parts/Service-Prgms/Accessories \ Oil Programs \ Oil Charts/Resources tab. 
G13308117

00 STIS NEW RELEASES

ITEM CODE ITEM TYPE TITLE CREATED DATE
07-181-20 Technical Service Bulletin DTC B1572-Revised Immobilizer... 16-Oct-20
06-77-20R Technical Service Bulletin DTCs C1531 and C1741-VDC Cont... 15-Oct-20
12-303-20 Technical Service Bulletin Left Rear Seat Belt-Design Ch... 15-Oct-20
14-22-16R Technical Service Bulletin Special Service Tool Cross Ref... 15-Oct-20
12-302-20 Technical Service Bulletin Squeaking Sound from Front Sea... 14-Oct-20
15-205-16R Technical Service Bulletin Reprogramming File Availabilit... 13-Oct-20
15-272-20R Technical Service Bulletin 2021 Audio/Navigation & Power... 13-Oct-20
05-78-20 Technical Service Bulletin DTC C2921 ID Registration Erro... 13-Oct-20
16-128-20R Technical Service Bulletin DTC P0842/Transmission Harne... 9-Oct-20
12-289-20 Technical Service Bulletin Rear Gate Stay Warranty Extens... 9-Oct-20
WTB-63R Subaru Product/Campaign Bulletin Service Campaign - Electronic... 9-Oct-20
06-80-20 Technical Service Bulletin DTC C0075 Repair Information 8-Oct-20
14-26-20 Technical Service Bulletin FA/FB Front Timing Chain Cov... 7-Oct-20
WUJ-95R Subaru Product/Campaign Bulletin Exhaust Pipe Front (EPF) Bello... 7-Oct-20
12-298-20 Technical Service Bulletin Rear Outer Seat Belts Not Retr... 7-Oct-20
10-98-20 Technical Service Bulletin New Air Conditioning (A/C) Com... 7-Oct-20
07-155-19R Technical Service Bulletin Power Rear Gate (PRG) Control... 6-Oct-20
H501SSG203 Accessory Installation Guide PORT INSTALLATION: 2020MY Lega... 5-Oct-20
07-179-20 Technical Service Bulletin Power Rear Gate (PRG) Control... 5-Oct-20
MSA5M2101W Warranty Booklet 2021 Warranty and Maintenance... 5-Oct-20
MSA5B2101A Owner Manual 2021 Getting Started Guide 2-Oct-20
MSA5M2112A Owner Manual 2021MY Impreza Eyesight Owner'... 2-Oct-20
MSA5M2109A Owner Manual 2021MYImpreza Subaru STARLINK®... 2-Oct-20
MSA5M2101A Owner Manual 2021MY Impreza Owner's Manual 2-Oct-20
WRD-20R Subaru Product/Campaign Bulletin Fuel Pump Impeller Failure 2-Oct-20
18-201-20 Service Manual Correction Service Manual Corrections 2-Oct-20
12-300-20 Technical Service Bulletin Power Rear Gate (PRG) Switch T... 30-Sep-20
05-77-20 Technical Service Bulletin Front Suspension Alignment Spe... 30-Sep-20
SUTTIPSLOC Other/Miscellaneous TechTIPS Article Locator Index... 29-Sep-20
H671SAN200 Accessory Installation Guide PORT INSTALLATION: 2020MY Outb... 28-Sep-20
15-233-18R Technical Service Bulletin Display/Touch Screen Soft K... 28-Sep-20
15-220-18R Technical Service Bulletin Harman Audio/Infotainment: T... 28-Sep-20
15-236-18R Technical Service Bulletin Reprogramming File Availabilit... 28-Sep-20
15-235-18R Technical Service Bulletin Harman Kardon Gen 3 Audio Ampl... 28-Sep-20
15-231-18R Technical Service Bulletin Harman Audio/Infotainment: T... 28-Sep-20
15-230-18R Technical Service Bulletin Harman Audio/Infotainment: T... 28-Sep-20
15-229-18R Technical Service Bulletin Harman Audio/Infotainment: T... 28-Sep-20
15-228-18R Technical Service Bulletin Harman Audio/Infotainment: D... 28-Sep-20
15-247-19R Technical Service Bulletin Harman Navigation Route Calcu... 28-Sep-20
15-227-18R Technical Service Bulletin Harman Audio/Infotainment: T... 28-Sep-20
15-226-18R Technical Service Bulletin Harman Audio/Infotainment: T... 28-Sep-20
15-243-19R Technical Service Bulletin Multi-Function Display (MFD) C... 28-Sep-20
15-221-18R Technical Service Bulletin Harman Audio/Infotainment: H... 28-Sep-20
TECH_SRVY_20 Other/Miscellaneous 2020 Subaru Technician Survey 28-Sep-20
G13308118