NHTSA ID Number: 10173123
Manufacturer Communication Number: Subaru
Tech Tips
TSB/Document Date: 2020-04-02
Summary
Subaru service and technical support line newsletter. Techtips newsletter locator index updated through December 2019.
Battery Charging ...........................................................................................................................................03/94
ECVT Trouble Code 31 ..................................................................................................................................04/94
ECVT - Select Monitor Speed Sensor Reading .............................................................................................04/94
Impreza Headlights ........................................................................................................................................04/94
Legacy Fuel System Wiring Diagram ............................................................................................................05/94
Impreza Fuel Tank Sending Unit Specifications ............................................................................................05/94
1995MY Legacy Electrical Component Location Quick Reference List ........................................................ 07/94
Legacy Fuel System Wiring Diagram ............................................................................................................08/94
SVX Spark Plug Servicing .............................................................................................................................09/94
Ignition Relays ............................................................................................................................................... 10/94
Ignition Relays - The Sequel ......................................................................................................................... 10/94
1995MY Legacy Speed Limiting Device ........................................................................................................ 11/94
SPI Trouble Code 13 (Crank Angle Sensor) From ECU ................................................................................ 11/94
OBD II Check Engine Light ............................................................................................................................ 12/94
Speed Sensor 2 ............................................................................................................................................. 01/95
1994MY Legacy Seat Heaters ....................................................................................................................... 01/95
Cold Shift Locks (Impreza Shift Locks That Won’t Unlock When Cold) ........................................................02/95
1985MY & Later L-Series MPFI Improper Engine Operation above 2000 RPM ............................................03/95
Battery Replacement .....................................................................................................................................03/95
Electrical Diagnosis, the Helpline, & You .......................................................................................................04/95
TechTIPS Article Locator Edition
Page 22 of 54
07-Electrical
Battery Charging ...........................................................................................................................................05/95
Electrical Condition Reporting .......................................................................................................................06/95
ROM Installation ............................................................................................................................................08/95
1 Mw Min. ......................................................................................................................................................09/95
1996MY Subaru Legacy Outback Fog Lamps ............................................................................................... 10/95
1995MY Subaru Legacy Outback Rear Power Outlet ................................................................................... 11/95
Identification of Cam and Crank Sensors ...................................................................................................... 07/96
1995MY/96MY Subaru Legacy Blows Fuse SBF-2 ....................................................................................... 07/96
1997MY Legacy Power Door Lock System ...................................................................................................09/96
Sticking or Difficult Auto Down P/W Switch Buttons (Mistakenly Printed In Section 11) ................................ 10/96
Diagnostic Trouble Code P0341 .................................................................................................................... 10/96
Loose Window Regulators ............................................................................................................................. 10/96
Rear Defogger Timer .....................................................................................................................................03/97
Legacy Heater Control Panel Bulbs ...............................................................................................................03/97
‘98MY Forester Transit Connector Location ..................................................................................................08/97
‘98MY Forester Trailer Hitch Wiring Harness ................................................................................................08/97
‘95MY-‘97MY Legacy Moisture Accumulation in the Headlights ....................................................................04/98
2000MY Legacy Battery ................................................................................................................................09/99
Wiring Harness Connector I5 ........................................................................................................................09/99
Electrical Problems? Check The Alternator. ................................................................................................. 11/99
2000MY Legacy Blows Fuse #5..................................................................................................................... 01/00
2000MY Subaru Legacy Turn Signal Operation.............................................................................................02/00
2000MY Legacy & Outback Vehicles Fog Light Operation............................................................................04/00
Grounds, Grounds, Grounds.......................................................................................................................... 07/00
Daytime Running Lights.................................................................................................................................08/00
Windshield Wiper Deicer System not Working............................................................................................... 11/00
Turn Signals Flashing Rapidly........................................................................................................................ 11/00
Blower Motor Resistor Repairs....................................................................................................................... 01/01
In-Dash Cigarette Lighter Usage....................................................................................................................06/01
Alternator Supplier Update.............................................................................................................................08/01
Legacy Transit (D-check plug) Connectors.............................................................................................. 03-04/02
Fuse 4 Blows-Out..................................................................................................................................... 03-04/02
Legacy Rear Wiper Operation.................................................................................................................. 03-04/02
2005MY Legacy/Outback Trailer Hitch Harness Location.............................................................................. 07/05
Backup Power Supply Fuse............................................................................................................................ 10/05
2005MY Forester Diagnostic Connector........................................................................................................ 11/04
2005MY Legacy/Outback Electrical Diagnosis...............................................................................................02/05
Body Integrated Unit (BIU) Replacement.......................................................................................................03/05
Fuse Label Correction....................................................................................................................................03/05
HVAC & Audio Unit Inoperative After Wiring Harness Change......................................................................04/05
2005MY Baja with Poor Radio Reception......................................................................................................04/05
HVAC Inoperative After Wiring Harness Change—More Information............................................................05/05
2003MY Forester Fuse Information................................................................................................................08/05
Battery Going Dead or Alarm Going Off.........................................................................................................09/05
Information Requested For Harness Repair Kits............................................................................................ 11/05
2006MY Legacy/Outback and B9 Tribeca Combination Meter Self Diagnosis...............................................02/06
Change of Seat Heater Relay.........................................................................................................................02/06
Low Battery Voltage.......................................................................................................................................06/06
2005MY Forester A/F & O2 Sensor Relay Location.......................................................................................06/06
SBF-5 Fuse Blows On 2005 MY / 2006 MY Impreza Vehicles....................................................................... 07/06
“Dark Current” Or Excessive Battery Draw....................................................................................................02/07
Erratic Tail Light Operation.............................................................................................................................04/07
TechTIPS Article Locator Edition
Page 23 of 54
07-Electrical
More “Dark Current” Information....................................................................................................................04/07
Headlight Bulb Replacements –A Reminder..................................................................................................05/07
New Style 2008 MY Legacy, Outback & Tribeca Keys...................................................................................06/07
Midtronics inTELLECT EXP Battery Tester Logic Update..............................................................................06/07
Headlight Bulb Socket Repairs....................................................................................................................... 07/07
2008 MY High Security Keys..........................................................................................................................08/07
2008MY Impreza Headlight Switch Operation................................................................................................09/07
2008 Impreza Stop Light Switch C0074 and C0054....................................................................................... 01/08
BIU Replacement and Keys............................................................................................................................05/08
2008 Impreza Data Link Connector Color Change.........................................................................................06/08
Legacy & Outback Door Switch (Nov 2004 production & after)......................................................................06/08
Wiring Harness Connector Similarities & Cautions........................................................................................ 07/08
Forester Sunroof Reverses When Closing..................................................................................................... 12/08
2008-09 Impreza, Erratic Outside Temperature Gauge Operation................................................................. 01/09
Door & Ignition Lock Cylinder Replacement Clarification...............................................................................02/09
2009 M/Y Forester Power Window Information..............................................................................................03/09
Power Door Locks Inoperative, 2009 M/Y Forester........................................................................................04/09
“Dark Current” ….Revisited............................................................................................................................06/09
2010 M/Y Legacy & Outback Auto Up / Down Feature Operation..................................................................08/09
Speedometer Inoperative? Don’t Overlook the Sunroof Wiring.....................................................................08/09
2010 M/Y Legacy & Outback Low-Beam Bulb Replacement.........................................................................08/09
2010 M/Y Legacy & Outback Headlight Bulb Replacement Information........................................................09/09
2010 M/Y Legacy & Outback Power Window Operation................................................................................ 10/09
Re-Coding Laser-Cut Keys............................................................................................................................. 01/10
2010 M/Y Legacy & Outback Oil Level Warning Information.......................................................................... 02/10
2010 M/Y Legacy & Outback BIU Interchangeability...................................................................................... 02/10
2010 M/Y Forester “Resonating” Noise When Using the Horn....................................................................... 03/10
2010 M/Y Forester Dome Light Erratic Operation.......................................................................................... 05/10
2010 and 2011 Driver’s AUTO-UP Reset Information..................................................................................... 10/10
2008 – 2011 Impreza Front Turn Signals Blink Too Fast.................................................................................01/11
Remote Trunk Release Inoperative After BIU Replacement........................................................................... 05/11
2008 M/Y and Later Impreza Stop Light Switch Information.......................................................................... 05/11
Sunroof Operation Service Bulletins.............................................................................................................. 05/11
New DTC’s After Bulkhead Harness Replacement......................................................................................... 06/11
CAN System Diagnostic Information...............................................................................................................07/11
Immobilizer Codes Stored, Engine Starts and Stalls Condition...................................................................... 08/11
2011 M/Y Impreza High Beams Not Bright Enough?...................................................................................... 10/11
Headlight Aiming Precautions.........................................................................................................................11/11
Tom-Tom Equipped Volume Control Information............................................................................................ 12/11
2012 M/Y Impreza No Start, SBF-6 Blown..................................................................................................... 01/12
2012 Impreza Key Information........................................................................................................................ 03/12
Sunroofs and Car Washes............................................................................................................................. 04/12
Battery Testing, the Importance of Using the Right Standard........................................................................ 04/12
Re-Programming Information for All 2011-12 M/Y Vehicles............................................................................ 05/12
2013 BRZ Auto Up/Down Window Feature..................................................................................................... 09/12
Hard To Fill Fuel Tank..................................................................................................................................... 09/12
Eyesight Camera Adjustment......................................................................................................................... 10/12
13 MY Legacy And Outback Accessory Charging...........................................................................................11/12
Electrical Devices And Air Bag Systems........................................................................................................ 12/12
14 MY Forester Turbo Battery Cable Precaution/ DTC P0606....................................................................... 02/13
Appearance of Water in BRZ Back Up Light.................................................................................................. 03/13
Memory Height Learning Procedure.............................................................................................................. 04/13
TechTIPS Article Locator Edition
Page 24 of 54
07-Electrical
Erratic Digital Fuel Gauge Operation, 2012 My and Later Impreza, BRZ, and 2014 Forester........................ 04/13
Immobilizer/ Key Registration Information...................................................................................................... 04/13
2014 Forester Information Display Selection Knob( or the Right Side or Other Trip Knob)............................ 04/13
Campaign WQF-42 Information...................................................................................................................... 05/13
Fuel Gauge Diagnostic’s................................................................................................................................. 05/13
2014 Forester Turbo, ECM Electrical Testing Reminder................................................................................. 06/13
2014 Forester Power Rear Gate (PRG) Initialization Procedure..................................................................... 06/13
2014 Forester Non-Turbo ECM And BIU Locations........................................................................................ 06/13
2014 Forester L/F Power Window auto up/down operation............................................................................ 08/13
HVAC Electrical Connections......................................................................................................................... 09/13
BIU Replacement on all Push-button Start Vehicles...................................................................................... 10/13
2014 Forester Seat heater Operation and Switch Functions...........................................................................11/13
Headlight Adjustment Reminders....................................................................................................................11/13
ODS Code 29 or 37, Electrical Devices and Air Bags revisted....................................................................... 12/13
Appearance of Water Droplets in BRZ Exterior Lamps.................................................................................. 01/14
Important Hybrid Vehicle Aux Battery Precautions......................................................................................... 01/14
Operation of SI-Drive, Sport Sharp(S+) Mode after Cold Start....................................................................... 02/14
Midtronics GR8Use During Control unit Programming................................................................................... 02/14
2010-14 Legacy& Outback Fuse # 16 Failed in the Main Fuse Box................................................................ 03/14
DTC P0724, Brake Switch Circuit High Input.................................................................................................. 03/14
Passenger Side Power Window Auto Up/Down Function.............................................................................. 08/14
2015 Legacy/Outback Power Window Auto Up/Down Operation Revisited ................................................... 09/14
2015MY Legacy and Outback Under Hood Main Fuse Box (M/B) Information.............................................. 09/14
2015 Legacy and Outback Cold Weather Light Operation............................................................................. 10/14
2015 Legacy and Outback Under-Hood Main Fuse Box (M/B) Information.................................................... 10/14
2015 Legacy and Outback Keyhole Shadow From Projector Beam Headlamp.............................................. 10/14
Dark Current Draw Revisited...........................................................................................................................11/14
Bluetooth Pre-Call Worksheet.........................................................................................................................11/14
2015 Legacy/Outback Unnecessary Power Window Switch Replacements.................................................. 12/14
Body Integrated Unit (BIU) Replacement/ Interior Lights Flashing................................................................. 01/15
Identifying Electrical Harness Connectors...................................................................................................... 04/15
Electrical Diagnosis and Aftermarket Equipment........................................................................................... 04/15
DTC Diagnosis and Related Wiring Harness Checks..................................................................................... 05/15
2010-2016 Forester TPMS light flashing, Sensor Registration Issues............................................................ 09/15
Spark Plug Information a Reminder............................................................................................................... 03/16
Battery Servicing Precautions........................................................................................................................ 03/16
GR-8 1100 EST Battery Diagnostic Station, Power Supply Mode.................................................................. 05/16
No Crank No Start Diagnosis......................................................................................................................... 06/16
Blue-Tooth Pre-call Worksheet....................................................................................................................... 07/16
Ignition Key Cannot Be Removed From Ignition Switch................................................................................. 10/16
Quick Reference Immobilizer Type................................................................................................................. 10/16
Replacing B-Type BIU.................................................................................................................................... 10/16
Fuel Gauge Diagnosis Revisited.....................................................................................................................11/16
Power Window erratic, cannot program memory........................................................................................... 01/17
No Hybrid Auto Start Stop or Ev Travel.......................................................................................................... 01/17
BIU replacement............................................................................................................................................. 01/17
Satellite Signal Lost When Traveling South 2014-UP Forester....................................................................... 02/17
PAK file error messages................................................................................................................................. 05/17
B1650 Proper Diagnosis................................................................................................................................. 06/17
Blind Spot Detection Off................................................................................................................................. 01/18
Ground Circuit Identification........................................................................................................................... 03/18
No Hybrid Auto Start Stop or EV Travel.......................................................................................................... 03/18
TechTIPS Article Locator Edition
Page 25 of 54
07-Electrical
ECM Reprogramming..................................................................................................................................... 05/18
Audio Unit Service/Diagnostic Menu.............................................................................................................. 06/18
Quick Reference Immobilizer Type................................................................................................................. 08/18
Replacing B-Type BIU.................................................................................................................................... 08/18
Ascent Automatic Wiper Rain Sensor Initialization......................................................................................... 10/18
2019MY Forester, Driver Monitoring System (DMS) Inoperative.....................................................................11/18
2019MY Forester, Loose Negative Battery Cable/Terminal Connections........................................................11/18
Performing Variant Work When Replacing Combination Meter...................................................................... 12/18
Automatic Start-Stop System Enable Conditions........................................................................................... 12/18
2019MY Forester, Driver Monitoring System (DMS) Inoperative *UPDATE*.................................................. 01/19
Gen 3 Clock Related Concern........................................................................................................................ 02/19
2018 – 19MY Legacy & Outback – B1650...................................................................................................... 02/19
2019MY Forester- Rear Seat Heaters Inoperative.......................................................................................... 03/19
2019MY Forester- Automatic Seat Retraction Feature Operation.................................................................. 03/19
Electrical Diagnosis and Aftermarket Equipment........................................................................................... 03/19
2019MY Forester, Driver Monitoring System (DMS) Inoperative B2632 B2642............................................. 04/19
Hill Start Assist Lamp Illuminated Without Associated DTCs or Customer’s Concern................................... 04/19
2019MY Forester Manual Override for Power Rear Gate............................................................................... 05/19
2019MY WRX, Telematics “i” Button Sticking................................................................................................ 05/19
Identical Electrical Connectors....................................................................................................................... 06/19
2019 Forester Door Mirror Reverse Tilt-Down Feature................................................................................... 06/19
2020MY Legacy & Outback, DTCs B2259, B2244, B282C, & B2C22.............................................................11/19
Midtronics DSS-5000 and DCA-8000 Tips and Tricks................................................................................... 12/19
TechTIPS Article Locator Edition
Page 26 of 54
08-Instrument & Controls
08-Instrument & Controls
High Reading Temperature Gauge, Digital Dash 85MY & 86MY “L” Series, Including XT ............................08/91
L-Series Speed Sensor Replacement ...........................................................................................................02/92
1992MY Legacy FWD Modified Fuel Tank Sender Unit ................................................................................09/92
Corrections to Previous Helpline Updates ..................................................................................................... 11/92
Odometer Labels ...........................................................................................................................................02/93
Legacy Knock Sensor Testing .......................................................................................................................03/93
Legacy All Wheel Drive Fuel Gauge ..............................................................................................................04/93
Impreza Combination Meter Tachometer ......................................................................................................05/93
Legacy Postal Vehicles with Single Action Power Door Locks ...................................................................... 11/93
Speedometer Inaccuracies ............................................................................................................................ 01/95
Warning Light Operation ................................................................................................................................02/95
Legacy and Impreza Fuel Tank Sending Units ..............................................................................................05/95
Instrument Cluster Circuit Boards .................................................................................................................. 10/96
Fuel Gauges on “E” ....................................................................................................................................... 10/96
1998MY Subaru Forester/Impreza Digital Odometer .....................................................................................09/97
Odometer Policy.............................................................................................................................................02/01
Ambient Temperature Sensor.........................................................................................................................04/04
SI-Drive Multi-Information Clock Display Characteristics...............................................................................04/08
2010 M/Y Legacy & Outback Clock Setting Procedure..................................................................................08/09
Adjusting the Clock and Settings of the Multi-Function Display..................................................................... 05/10
Shift Indicator Light Applicability, 2012M/Y Impreza....................................................................................... 04/12
BRZ Trunk Release Operation....................................................................................................................... 07/12
Navigation Screen Displaying The Language Menu...................................................................................... 11/12
2014 Forester Multi Function Display Messages............................................................................................ 08/13
2015MY Legacy/Outback, Journey Time Alert on Combination Meter Tell tail Display.................................. 09/15
Input Code for Combination Meter Mode Change.......................................................................................... 12/19
TechTIPS Article Locator Edition
Page 27 of 54
09-Cooling, Fuel, & Exhaust System
09-Cooling, Fuel, & Exhaust System
Justy FWD-ECVT Noise from Exhaust Pipe Joint ......................................................................................... 05/91
Legacy 4EAT Radiators .................................................................................................................................02/92
Subaru Exhaust Systems ..............................................................................................................................04/92
1992MY SIA Models Production Fuel Filter ...................................................................................................05/92
Legacy Exhaust Whistle Turbo & Naturally Aspirated ...................................................................................06/92
1992MY Legacy FWD Modified Fuel Tank Sender Unit ................................................................................09/92
Corrections to Previous Helpline Updates ..................................................................................................... 11/92
Coolant Recycling ..........................................................................................................................................06/93
Summer Low RVP Fuels ...............................................................................................................................06/94
Fuel Quality Check ........................................................................................................................................06/94
Fuel Switching ...............................................................................................................................................09/94
Impreza Fuel Tank Sending Unit Assemblies ................................................................................................09/94
Impreza Fuel Tank Capacity .......................................................................................................................... 10/94
Replacing Loyale Thermostats ...................................................................................................................... 11/94
2.2L Impreza AWD Fuel Senders ..................................................................................................................04/95
Reformulated Gasoline ..................................................................................................................................05/95
Loyale Water Pump Leaks ............................................................................................................................. 07/95
Modified Fuel Injectors .................................................................................................................................. 10/96
Cooling Fan Operation ..................................................................................................................................09/97
1999MY Legacy Excessive Crank Time ........................................................................................................03/99
Vehicle Won’t Take Fuel ................................................................................................................................03/99
Vehicles That Won’t Take Fuel ......................................................................................................................09/99
Fuel System Quick Connector ....................................................................................................................... 10/99
Don’t Touch That Screw! ............................................................................................................................... 01/00
Sulfur Smell from the Exhaust .......................................................................................................................05/00
Use of Genuine Air Cleaner Element.............................................................................................................. 11/00
H-6 Extended Crank Time.........................................................................................................................01-02/02
Forester Fuel Line Noise........................................................................................................................... 09-10/02
WRX STi Driveability......................................................................................................................................08/03
2004MY Legacy Fuel Filter Replacement......................................................................................................09/03
H6 Drivability.................................................................................................................................................. 11/03
New Product Orientation for the Cooling System Conditioner........................................................................04/04
2004MY Legacy/Outback H-6 and H-4 (NA) Fuel Line Removal...................................................................05/04
2005MY Legacy Fuel Line Rattle................................................................................................................... 11/04
Fuel Order in Cold Weather (Service Bulletin Reminder)............................................................................... 11/04
Fuel Line Tool................................................................................................................................................. 12/04
Gas Mileage...................................................................................................................................................03/05
Fuel Hose Retainer Clips................................................................................................................................06/05
B9 Tribeca Fuel Line Tool...............................................................................................................................04/06
Subaru Vehicles and Driveability....................................................................................................................09/06
STI Models Fuel Recommendation................................................................................................................ 11/06
Fuel Odor on Initial Cold Starts......................................................................................................................02/07
Engine Cooling System Service & Care Recommendations..........................................................................06/07
Fuel-Related Driveability Concerns................................................................................................................08/07
Genuine Subaru Cooling System Conditioner Information............................................................................. 10/07
Subaru Super Coolant.................................................................................................................................... 11/07
P0171 and “Hard Start” Concerns.................................................................................................................. 12/07
More Subaru Super Coolant Information........................................................................................................03/08
Wynn’s Cooling System Equipment Announcement......................................................................................08/08
“Back To Basics” Rattling Noises From Under the Car..................................................................................02/09
TechTIPS Article Locator Edition
Page 28 of 54
09-Cooling, Fuel, & Exhaust System
2009 M/Y Forester Fuel Gauge Inconsistency...............................................................................................02/09
2010 M/Y Impreza, Rattling Noise from Exhaust............................................................................................ 10/09
More “Super Coolant” Information.................................................................................................................. 10/09
WVJ-20 (Baja Fuel Pump Outlet Pipe) Revised Product Campaign Bulletin Information............................... 11/09
2011 M/Y Impreza Fuel Door Update............................................................................................................. 12/10
2011 M/Y Forester Fuel Pressure Testing Information.................................................................................... 02/11
Rough Idle Condition Following WVU-31 Reprogramming............................................................................ 06/11
DTC P0453 Diagnostic Information.................................................................................................................11/11
FB Engine Fuel Pressure Testing Information................................................................................................ 03/12
BRZ High Pressure Fuel Pump...................................................................................................................... 07/12
BRZ Exhaust System Hardware..................................................................................................................... 08/12
Radiator Leaks And Damage......................................................................................................................... 08/12
Locksmith Information.................................................................................................................................... 09/12
Use of Dye In AC Systems............................................................................................................................. 09/12
12 Impreza Muffler Appearance Change........................................................................................................ 10/12
New Fuel With 15% Ethanol........................................................................................................................... 10/12
AF sensor and O2 sensor Removal............................................................................................................... 01/13
New Fuel 15% Ethanol Reminder................................................................................................................... 08/13
Hard to Fill Fuel Tank Revisited...................................................................................................................... 12/14
Cooling System Appears to be Overfilled at PDI............................................................................................ 06/15
P05A0 and Active Grill Shutter Inspection...................................................................................................... 01/17
Fuel Tank Cannot be Filled............................................................................................................................. 07/17
TechTIPS Article Locator Edition
Page 29 of 54
10-Heating Ventilation & A/C Systems
10-Heating Ventilation & A/C Systems
A/C Service Oil Adjustment ...........................................................................................................................06/91
A/C Diagnostic Aids .......................................................................................................................................08/91
A/C Pulser System Electrical Diagnosis 89MY & 90MY Loyale ....................................................................08/91
1992MY Legacy A/C Compressor Bracket Discontinuation .......................................................................... 11/91
Justy Wynn’s Air Conditioning Installation .....................................................................................................03/92
The Use of A/C Refrigerants Other Then R-12 .............................................................................................. 07/92
Justy Air Conditioning Information ................................................................................................................. 07/92
Air Conditioning Evaporator Odor ..................................................................................................................08/92
SVX Zexel Auto A/C ......................................................................................................................................09/92
Legacy A/C Compressor ............................................................................................................................... 10/92
Legacy A/C Kit Supersession ........................................................................................................................ 10/92
HFC134a Air Conditioning Refrigerant ..........................................................................................................02/93
R134a Air Conditioner Refrigerant Service Bulletin .......................................................................................03/93
Legacy Zexel Air Conditioning .......................................................................................................................04/93
Legacy Compressor Belt Tension ..................................................................................................................04/93
1993 MY Impreza Air Conditioning Inoperative ............................................................................................. 07/93
Loyale Factory Installed A/C Does Not Operate ............................................................................................ 07/93
HFC 134a Air Conditioning Systems ............................................................................................................. 07/93
SVX Auto A/C Display Degrees Celsius to Degrees Fahrenheit ................................................................... 11/93
Bulletin 10-64-92 Heater Vent Door Binding or Leaking Air .......................................................................... 12/93
Refrigerant Cross Contamination .................................................................................................................. 01/94
0Z-12: The Facts ............................................................................................................................................02/94
SVX Complaints of No Heat from Dash Vents ...............................................................................................04/94
1995MY Impreza Coupe - Bubbles from the Dash Vents .............................................................................. 10/94
A/C Reminder ................................................................................................................................................05/95
PAG Oils ........................................................................................................................................................05/95
Air Conditioner Hoses ...................................................................................................................................08/95
1995MY RHD Postal Legacy Air Conditioning System ..................................................................................08/95
A/C System Diagnostic Tips ..........................................................................................................................08/95
A/C Testing For System Leakage ..................................................................................................................08/95
SVX A/C Cutting out When Ambient Temperature Is Hot; SVX Engine Running Hot ...................................09/95
SVX Evaporator Thermo Sensor, Intake Sensor ........................................................................................... 10/95
A/C Performance-All Models ......................................................................................................................... 10/95
Refrigerant Recovery and Recycling Certification .........................................................................................06/96
CFC R-12 Substitute Refrigerants .................................................................................................................06/96
Refrigerant Substitutions Warning .................................................................................................................08/96
SVX A/C Temperature Control Indicating Centigrade vs. Fahrenheit ............................................................ 10/96
A/C Odors ......................................................................................................................................................05/97
1997MY Legacy A/C Seal Ring (Axis Seal) Change .....................................................................................05/97
1998MY Subaru Forester Dash Vent Noise ...................................................................................................09/97
1998MY Subaru Forester Squeaking Noise with A/C on ...............................................................................09/97
Dust and Dirt Entering Rear of Vehicle .......................................................................................................... 11/97
Subaru Impreza Center Dash Vent Airflow .................................................................................................... 07/98
Subaru A/C Retrofit Kits ................................................................................................................................09/98
Use of A/C Dyes in Subaru Air Conditioning Systems, Manufacturer’s Recommendations ..........................09/98
Seasonal Reminder .......................................................................................................................................05/99
A/C Retrofit Kit Information ............................................................................................................................ 07/99
A/C Inoperative – Impreza/Forester Vehicles ................................................................................................ 10/99
2000MY Legacy Heater Control Cables.........................................................................................................05/00
2001MY A/C Disconnect Procedure............................................................................................................... 07/00
TechTIPS Article Locator Edition
Page 30 of 54
10-Heating Ventilation & A/C Systems
Mode Control Panel Change..........................................................................................................................02/01
2001MY Legacy Evaporator Thermostat Probe Location............................................................................... 07/01
Legacy H6 A/C Compressor Cutting Out.......................................................................................................08/01
Valeo/Zexel A/C TXV Fastener Torque Specification..................................................................................... 08/01
H6 Climate Control System Information......................................................................................................... 09/01
Change To 2002MY Legacy/Outback A/C Information................................................................................... 09/01
2001/2002MY Legacy Blower Motor Noise.................................................................................................... 11/01
Blower Motor Noise........................................................................................................................................08/02
Blower Motor Noise...................................................................................................................................01-02/03
Auto. A/C System Aspirator Tubes................................................................................................................. 07/03
Service Bulletin 10-72-02R – An Update........................................................................................................ 10/03
B9 Tribeca Air Conditioning Information.........................................................................................................09/05
Water Leaking Onto Passenger Floor Board Area.........................................................................................09/05
Water Leaking From A/C Evaporator.............................................................................................................. 10/05
2005MY Legacy/Outback: Water Leaking from A/C Evaporator..................................................................... 11/05
2005~06MY Legacy/Outback Center Dash Vent Temperature......................................................................05/06
B9 Tribeca Air Conditioning Information.........................................................................................................06/06
H6 A/C Compressors Cutting Off...................................................................................................................06/06
06MY Impreza Models: Manual Climate Control System Air Flow Dial “Spring Back”................................... 07/06
Refrigerant Dye Use to Detect Refrigerant Leaks.......................................................................................... 10/06
A/C Operation Logic Change for 2007MY...................................................................................................... 11/06
R134-A Recycling Recovery and Recharge Machines: New Manufacturing Standards................................12/06
2007 MY Forester A/C Compressor Changes................................................................................................04/07
A/C Certification –It’s the Law........................................................................................................................04/07
Erratic Dash Vent Temperatures.....................................................................................................................02/08
HVAC Servo Harness Connector Confusion.................................................................................................. 01/09
2010 – 11 Legacy / Outback Vibration Felt in the Brake Pedal........................................................................11/10
Reminder- Use of A/C Leak Detection Dyes.................................................................................................. 08/11
Center Dash A/C Vents Closing, 2010-12 M/Y Legacy / Outback Models.......................................................11/11
2013-14Legacy and Outback Center Console Rear Air Vent Function........................................................... 03/14
A/C Diagnosis................................................................................................................................................. 07/17
Condensation Inside Vehicles........................................................................................................................ 12/17
R-134 A/C Oil Guidelines................................................................................................................................ 07/18
B2242 Set With no Trouble Symptom............................................................................................................. 02/19
TechTIPS Article Locator Edition
Page 31 of 54
11-Emission Systems
11-Emission Systems
Justy “Check Engine” Light On/EGR Hose Pulling Off .................................................................................. 11/91
ROM Reminder/Legacy A/T Vehicles ............................................................................................................ 12/91
SVX Trouble Code 12 .................................................................................................................................... 12/91
SVX Code 37 O2 Sensor (LH) ....................................................................................................................... 01/92
L-Series SPI Code 34 (EGR Solenoid) ..........................................................................................................02/92
All Models False Trouble Codes ....................................................................................................................04/92
Legacy Turbo Sport Sedan Code 45 (Pressure Sensor, Pressure Exchange Solenoid Valve) .....................06/92
Legacy Code 32 O2 Sensor ..........................................................................................................................06/92
Justy Code 13 ................................................................................................................................................08/92
ROM Installation Tips ....................................................................................................................................09/92
ECU Memory-All Models ...............................................................................................................................09/92
Justy Trouble Code 23: Pressure Sensor ...................................................................................................... 01/93
O2 Sensors for XT4 and XT6 Vehicles .......................................................................................................... 12/93
Legacy Code 32 O2 Sensor ..........................................................................................................................03/94
Carbureted Vehicles with ID Codes While Engine Is Running ......................................................................06/94
OBD II - DTC P0441 “Evaporative Emission Control System Incorrect Purge Flow” ..................................... 11/94
OBD II Test Drives ......................................................................................................................................... 11/94
Legacy and Impreza Engines with No Injection Pulse #1 Cylinder ................................................................03/95
Impreza Air Suction Valve Noise ...................................................................................................................03/95
1995MY Subaru Legacy DTC P0505 - Idle Control System Malfunction.......................................................06/95
1995MY Subaru Legacy DTC P0325 - Knock Sensor Circuit Malfunction ....................................................06/95
1995MY Subaru Legacy DTC P0130 - Front O2 Sensor Circuit Malfunction .................................................06/95
Rough Idle on MPFI Vehicles ........................................................................................................................ 07/95
1994MY Impreza ROM Sockets .................................................................................................................... 07/95
DTC P0505 Idle Control System When Solenoid Measures 5w or Less .......................................................09/95
Extreme Cold Weather Engine Warm Up & OBD II ....................................................................................... 12/95
Loose Fuel Caps & Trouble Code P0440 ...................................................................................................... 07/96
1997MY Legacy Warranty Claims For Loose Fuel Caps ...............................................................................09/96
Legacy (Non Turbo), SVX, & Impreza ISC Valves .........................................................................................09/96
DTC P0440 & Legacy Fuel Caps ................................................................................................................... 11/96
Blue Vs. Gray Connectors during Diagnosis ................................................................................................. 11/96
Extreme Cold Weather Engine Warm-Up & OBD-II ...................................................................................... 11/96
DTC P1500 Radiator Fan Relay One Circuit .................................................................................................03/97
1997MY Subaru Impreza Outback Sport .......................................................................................................03/97
Understanding P0440 ....................................................................................................................................04/97
DTC P0507- Idle Control System RPM Higher Than Expected .....................................................................05/97
DTC P0500 .................................................................................................................................................... 07/97
Additional Information regarding Code P0440 .............................................................................................. 07/97
OBD-II Cylinder Misfire Codes ......................................................................................................................08/97
More P0440 Information ................................................................................................................................ 10/97
Exhaust Smell during Cold Start ................................................................................................................... 01/98
Model Year 1998 Changes In P0440 Evap. Operation .......................................................................1/98 & 05/98
DTC P0440 Revisited ....................................................................................................................................05/98
DTC P0440 Tip .............................................................................................................................................. 11/98
DTC P1507 .................................................................................................................................................... 11/98
DTC P0705 Diagnostics ................................................................................................................................05/99
Freeze Frame Data ........................................................................................................................................08/99
Evaporative System Diagnosis ......................................................................................................................09/99
OBD Readiness Codes ................................................................................................................................. 11/99
DTC P0440 1998/1999MY Forester ................................................................................................................ 1/99
TechTIPS Article Locator Edition
Page 32 of 54
11-Emission Systems
WXV-79 Engine Control Module Service Program......................................................................................... 11/00
Freeze Frame Data......................................................................................................................................... 05/01
Ignition Coil Service Precaution................................................................................................................01-02/02
2002MY Legacy Atmospheric Pressure Solenoid Valve Operation.......................................................... 03-04/02
DTC P1591 2002MY Impreza WRX M/T.................................................................................................. 03-04/02
C.I.D. Number for Reprogramming........................................................................................................... 03-04/02
WWG-90 Campaign Bulletin Correction.........................................................................................................08/02
ECM Reflashing Claim Coding..................................................................................................................01-02/03
Diagnostic Trouble Codes After WWK-94......................................................................................................05/03
ECM Calibration Identification Numbers.........................................................................................................05/03
ECM Reflashing..............................................................................................................................................05/03
Control Unit Reflashing Information................................................................................................................ 07/03
Diagnostic Trouble Code (DTC) Detecting Criteria.........................................................................................08/03
Rough Idle/Check Engine Light after Battery Disconnect..............................................................................09/03
Evaporative Canister Rattle Noise in ‘04MY Impreza.....................................................................................09/03
ECM Reprogramming – A Reminder.............................................................................................................. 01/04
2004MY Legacy PZEV Vehicles.....................................................................................................................04/04
DTC P1507 on 1996MY-1999MY Legacy Vehicles.........................................................................................04/04
Updated Reprogramming Sheet.....................................................................................................................05/04
ECM Reprogramming Fax Forms...................................................................................................................09/04
Freeze Frame Data.........................................................................................................................................09/04
Air Fuel Ratio Sensor Kits.............................................................................................................................. 12/04
2005MY & Reflashing..................................................................................................................................... 12/04
DTC P0171.....................................................................................................................................................04/05
Updated Reprogramming Sheet.....................................................................................................................08/05
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- Stay Updated with Lifetime Access: This obd2 scanner includes lifetime free software updates for all app service functions. With a single payment, enjoy full access to diagnostics, reset tools, and maintenance features — zero subscription fees. A budget-friendly choice for weekend mechanics, home car owners, and DIYers, supporting vehicles from 1996 onward. Come to us with your VIN to check compatibility.
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Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API
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