NHTSA ID Number: 10198741
Manufacturer Communication Number: 02-187-21
Summary
This bulletin outlines changes in the service procedure for engine oil pressure inspection.
NUMBER: 02-187-21
DATE: 06/01/21
INTRODUCTION:
This Service Information Bulletin outlines changes in the service procedure for engine oil pressure inspection for ALL models. The NEW procedure requires the engine oil pressure to be measured at idle AND at 3000 RPM. This standard has changed to provide an easier inspection. These changes will be added soon to the applicable Service Manuals.
SERVICE PROCEDURE / INFORMATION:
REMINDER: Customer satisfaction and retention starts with performing quality repairs.
IMPORTANT NOTES:
- Always confirm the oil level is at the proper level prior to inspection.
- The standard oil pressure value is based on an engine oil temperature of 80°C (176°F).
- If the oil pressure is OUT of the specification, diagnose per the applicable Service Manual.
- If the oil pressure warning light is ON and oil pressure is within standard specification, diagnose per the applicable Service Manual.
Engine> MECHANICAL > Engine Oil Pressure > INSPECTION
For BRZ – LUBRICATION > LUBRICATION SYSTEM > FUNCTION INSPECTION
STEP 1 ) Disconnect the ground terminal from battery sensor while supporting the sensor with the other hand.
STEP 2 ) Remove the oil pressure switch.
STEP 3 ) Install the oil pressure gauge (498575400) tool into the oil pressure switch port in the chain cover.
STEP 4 ) Reconnect the ground cable terminal to battery sensor and torque to 7.5 Nm (5.5ft.-lbs. or 66 inch-lbs.) while supporting the senor with the other hand: STARTING / CHARGING SYSTEMS > Battery Sensor.
STEP 5 ) Start the engine, and check the oil pressure.
Engine oil pressure:
At Idle (in Neutral or Park):
Standard
- Refer to the chart below for pressure specification.
At 3,000 RPM:
Standard
- Refer to the chart below for pressure specification.
| Model | MY | Engine Type | Oil Pressure at Idle | Oil Pressure at Idle | Oil Pressure at 3000rpm |
| CVT/AT | MT | ||||
| Outback & Legacy | 2015-2019 | FB25 | 71 kPa (10 psi) or more | N/A | 206 kPa (30 psi) or more |
| 2015-2019 | EZ36 | 76 kPa (11 psi) or more | N/A | 361 kPa (52 psi) or more | |
| 2020-2022 | FA24 DIT | 62 kPa (9 psi) or more | N/A | 350 kPa (50 psi) or more | |
| 2020-2022 | FB25 | 47 kPa (7 psi) or more | N/A | 230 kPa (33 psi) or more | |
| Forester | 2014-2018 | FA20 DIT | 65 kPa (9.5 psi) or more | N/A | 324 kPa (47 psi) or more |
| 2014-2018 | FB25 | 71 kPa (10 psi) or more | 69 kPa (10 psi) or more | 206 kPa (30 psi) or more | |
| 2019-2022 | FB25 | 47 kPa (7 psi) or more | N/A | 230 kPa (33 psi) or more | |
| Impreza | 2012-2016 | FB20 | 69 kPa (10 psi) or more | 69 kPa (10 psi) or more | 206 kPa (30 psi) or more |
| 2017-2022 | FB20 | 56 kPa (8 psi) or more | 48 kPa (7 psi) or more | 230 kPa (33 psi) or more | |
| Crosstrek | 2012-2017 | FB20 | 69 kPa (10 psi) or more | 69 kPa (10 psi) or more | 206 kPa (30 psi) or more |
| 2018-2022 | FB20 | 56 kPa (8 psi) or more | 48 kPa (7 psi) or more | 230 kPa (33 psi) or more | |
| 2021-2022 | FB25 | 47 kPa (7 psi) or more | N/A | 230 kPa (33 psi) or more | |
WRX | 2015-2022 | FA20 DIT | 65 kPa (9.5 psi) or more | 65 kPa (9.5 psi) or more | 324 kPa (47 psi) or more |
| STI | 2015-2022 | EJ25 | N/A | 102 kPa (14.8 psi) or more | 451 kPa (65.4 psi) or more |
| Ascent | 2019-2022 | FA24 DIT | 62 kPa (9 psi) or more | N/A | 350 kPa (50 psi) or more |
| BRZ | 2013-2020 | FA20 D-4S | 50 kPa (7 psi) or more | 50 kPa (7psi) or more | 222 kPa (32 psi) or more |
STEP 6 ) After inspection, reinstall the related parts in the reverse order of removal.
NOTE: No changes have been made to the Warranty Labor Time Guide for this procedure.
60 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| SUBARU | ASCENT | 2019-2021 |
| SUBARU | BRZ | 2013-2020 |
| SUBARU | CROSSTREK | 2013-2021 |
| SUBARU | FORESTER | 2014-2021 |
| SUBARU | IMPREZA | 2012-2021 |
| SUBARU | LEGACY | 2015-2022 |
| SUBARU | OUTBACK | 2015-2021 |
| SUBARU | WRX | 2015-2021 |
1 Associated Document
Manufacturer Communications
NUMBER: 02-187-21
DATE: 06/01/21
- Compatibility Note: For further confirmation of specific model compatibility, refer to the vehicle owner's manual or contact a professional technician. Excludes Fo/rd, K/I/A, Bo/s/ch, C/I/S Je/tro/nic, G//M Th/rot/tle Bo/dy Systems, A/cu/ra, J/ee/p, B/M/W, Ni/s/san, and To/yo/ta fuel systems. Not compatible with small/non/standard S/chra/der vallves, high/pre/ssure direct in/ject/ed engines, or die//sel injection pumps. Verify your vehicle’s vallve size and pressure specs before purchase
- Wide Compatibility: This fuel pressure tester kit comes with multiple adapters for most gasoline engines in trucks, cars, motorcycles and RVs. But not compatible with diesel high - pressure injection pumps or direct injection engines
- Accurate Testing: The fuel pressure tester features high - precision sensors for accurate measurement of fuel system pressure changes. Measures range 0-140PSI/ 0-10bar dual color coded scale to diagnose fuel supply and injection issues
- Multipurpose Use: The 8 inches hose fits all M6 fuel pressure test ports. The 15 inches hose connects snugly to any 1/4" standard schrader valve. The M8, M10, M12, and M14 adapters make sure this tool kit can be used on most cars and vehicles
- Corrosion Resistance: Crafted from high - strength materials, the fuel pressure tester offers excellent corrosion and impact resistance. It ensures long - term stability and reliability even in harsh working conditions
- 【TROUBLESHOOTING & SAVING MONEY】28pcs universal radiator pressure tester and vacuum refill kit with functions of leak detection, temperature measurement, liquid filling, etc. If you use the coolant pressure tester, the tester can quickly and easily solve any problems related to radiator pressure, making your job easier and faster.Note: Please select the corresponding adapter according to the user manual; otherwise, leakage may occur. If a suitable adapter is not available, please use a universal adapter, which is suitable for all vehicle models.
- 【ALL-IN-ONE TOOL KIT】1 x Radiator manual pressure tester(0-35psi/0-2.5 bar); 1 x Pneumatic vacuum coolant refiller(-30 to 0inHg/ -76 to 0cmHg); 1 x 19" Rubber nylon resin hose; 1 x Thermometer(32 - 400 ℉); 3 x Radiator cap test adapters; 1 x Universal tapered rubber adapter; 17 x Adapters; 1 x Adapter handle; 2 x Connectors; 1 x Storage case.
- 【TOP QUALITY MATERIAL】Radiator manual pump pressure detector adopts a premium aluminum cylinder and accurate shock-proof gauge design. A vacuum-type coolant refiller uses reliable brass and plastic material—a rubber hose with brass parts, anti-corrosive and waterproof. American & European style air plugs are provided for various air hoses.
- 【KEY EASE-OF-USE FEATURES】Color-coded caps help you quickly choose the right adapter without confusion.All-in-one design eliminates need for multiple separate tools.Clear instructions guide you through pressure testing and vacuum filling.Quality gauge provides accurate, easy-to-read pressure measurements,that even if you're new to cooling system work, the comprehensive kit and straightforward process make it accessible for DIY mechanics.
- 【APPLICATION】The kit includes 3 radiator cap test adapters for common cap styles.Look at your expansion tank: Most adapters are designed for expansion tank necks.Color-coded system: Each adapter has a colored cap to help you quickly identify the right fit.Universal tapered adapter: Included as a backup option for unusual fittings.Compatible with: Mercedes-Benz, BMW, Audi, VW, Ford, GM, Toyota, Honda, Nissan, Mazda, Subaru, and many more brands.The comprehensive adapter selection means you'll likely have the right fit, and if one doesn't work perfectly, you can try others in the set.
- 🔧【COMPLETE 33-PIECE MASTER KIT】This all-in-one coolant pressure tester and vacuum refill kit includes 23 radiator adapters (22 specific + 1 universal), a vacuum pump, a vacuum purge & refill tool, a probe thermometer, a wrench, EU & US air intake joints, O-rings, and hoses. Everything you need to diagnose cooling system leaks and refill without air pockets—all in one rugged carrying case.
- 🚗【WIDE COMPATIBILITY – 23 ADAPTERS FOR MOST CARS】With 23 different radiator adapters, this cooling system pressure tester works on most passenger vehicles, including Japanese, German, American, Korean, and European makes. Covers sedans, SUVs, trucks, and many light-duty vehicles. No more guessing which adapter fits—we‘ve got you covered.
- 🔍【DUAL FUNCTION: PRESSURE TESTING & VACUUM REFILL】Identify leaks quickly with the pressure testing function—check header tanks, expansion tanks, head gaskets, radiator cores, heater matrix, water pumps, and pipes. Then use the vacuum refill tool to purge air and refill coolant without any trapped air pockets. This two-in-one system saves time and prevents engine overheating.
- 📦【EASY ORGANIZATION & QUICK IDENTIFICATION】Color-coded adapters and molded size markings let you grab the right adapter instantly. The custom-molded carrying case keeps every component securely in its place, so you never lose a part. Hassle-free storage and transport for professional mechanics and DIYers alike.
- 💪【BUILT FOR DAILY USE – DURABLE MATERIALS】Constructed with quality aluminum alloy, nylon, rubber, and brass, this coolant pressure tester is engineered to withstand frequent use in busy workshops. The robust build ensures consistent performance and long-term reliability—year after year.
- Precise Reading Gauge: Five pressure gauges provides five measuring ranges: 0-10bar/150psi, 0-100bar/1500psi, 0-250bar/4000psi, 0-400bar/6000psi, 0-600bar/10000psi. The clear and precise scale ensures accurate pressure measurement, and there are two units on the scale, both efficient and convenient.
- Couplings & Tee Connectors: Our hydraulic test kit comes with a full set of accessories, including 13 test couplings and 14 tee connectors, covering many types of excavators. These couplings are made of high‑quality carbon steel with high strength and reliability. Accurate results that are easy to read.
- Sturdy & Durable Gauge: The hydraulic gauges adopt a 304 stainless steel shell and copper screw joint, making the gauge sturdy and durable for long service life. High purity glycerin filled in the gauge; effectively reduces the affection of vibration and pulsation.
- Long Test Hose: The test hose features nylon (interior), aramid fiber (middle), and polyurethane (exterior), which can withstand high pressure. In addition, the 5.25ft/1.6m long hose allows you to work from a long distance.
- Portable Carrying Case: The hydraulic pressure test kit contains a complete set of pressure measuring tools, neatly stored and tightly placed in a robust carrying case. The compact design saves storage space, and the handle on the case makes it easy to carry. Take it anywhere; don't miss any steps when completing tests.
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- Robust Gauge: With a 304 stainless steel casing and copper threaded joints, this hydraulic pressure gauge resists rust, shock, water, dust, and corrosion, ensuring long-lasting durability. The gauge is filled with high-grade glycerin, which maintains clarity and transparency, withstands extreme temperatures, and effectively reduces vibrations and pulsations.
- Sturdy Portable Polypropylene Box: This hydraulic pressure testing kit includes a comprehensive set of pressure measurement tools. Featuring a sponge protective layer and compact slots, it provides tidy storage and excellent protection. The box has a handle and durable locks for easy carrying and use.
- Long Testing Hoses: The excavator hydraulic pressure test kit contains five high-pressure hoses made of durable nylon, aramid fiber, and polyurethane. Their 5.4 ft / 1.66 m length allows for operation from a greater distance.
SEOCONTENT-START
Bulletin Number: 02-187-21; Date: 06/01/21 Page 1 of 3 SERVICE INFORMATION BULLETIN Continued… 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. NUMBER: 02-187-21 DATE: 06/01/21 APPLICABILITY: 2015-2022MY Legacy/Outback 2014-2022MY Forester 2012-2022MY Impreza/Crosstrek 2015-2022MY WRX 2019-2022MY Ascent 2013-2022MY BRZ SUBJECT: Engine Oil Pressure Inspection – Service Procedure Change INTRODUCTION: This Service Information Bulletin outlines changes in the service procedure for engine oil pressure inspection for ALL models. The NEW procedure requires the engine oil pressure to be measured at idle AND at 3000 RPM. This standard has changed to provide an easier inspection. These changes will be added soon to the applicable Service Manuals. SERVICE PROCEDURE / INFORMATION: REMINDER: Customer satisfaction and retention starts with performing quality repairs. IMPORTANT NOTES: • Always confirm the oil level is at the proper level prior to inspection. • The standard oil pressure value is based on an engine oil temperature of 80°C (176°F). • If the oil pressure is OUT of the specification, diagnose per the applicable Service Manual. • If the oil pressure warning light is ON and oil pressure is within standard specification, diagnose per the applicable Service Manual. ATTENTION: GENERAL MANAGER q PARTS MANAGER q CLAIMS PERSONNEL q SERVICE MANAGER q IMPORTANT – All Service Personnel Should Read and Initial in the boxes provided, right. © 2021 Subaru of America, Inc. All rights reserved. Bulletin Number: 02-187-21; Date: 06/01/21 Page 2 of 3 Continued… Engine> MECHANICAL > Engine Oil Pressure > INSPECTION For BRZ – LUBRICATION > LUBRICATION SYSTEM > FUNCTION INSPECTION STEP 1 ) Disconnect the ground terminal from battery sensor while supporting the sensor with the other hand. STEP 2 ) Remove the oil pressure switch. STEP 3 ) Install the oil pressure gauge (498575400) tool into the oil pressure switch port in the chain cover. STEP 4 ) Reconnect the ground cable terminal to battery sensor and torque to 7.5 Nm (5.5ft.-lbs. or 66 inch-lbs.) while supporting the senor with the other hand: STARTING / CHARGING SYSTEMS > Battery Sensor. STEP 5 ) Start the engine, and check the oil pressure. Engine oil pressure: At Idle (in Neutral or Park): Standard • Refer to the chart below for pressure specification. At 3,000 RPM: Standard • Refer to the chart below for pressure specification. Bulletin Number: 02-187-21; Date: 06/01/21 Page 3 of 3 Model MY Engine Type Oil Pressure at Idle Oil Pressure at Idle Oil Pressure at 3000rpm CVT/AT MT Outback & Legacy 2015-2019 FB25 71 kPa (10 psi) or more N/A 206 kPa (30 psi) or more 2015-2019 EZ36 76 kPa (11 psi) or more N/A 361 kPa (52 psi) or more 2020-2022 FA24 DIT 62 kPa (9 psi) or more N/A 350 kPa (50 psi) or more 2020-2022 FB25 47 kPa (7 psi) or more N/A 230 kPa (33 psi) or more Forester 2014-2018 FA20 DIT 65 kPa (9.5 psi) or more N/A 324 kPa (47 psi) or more 2014-2018 FB25 71 kPa (10 psi) or more 69 kPa (10 psi) or more 206 kPa (30 psi) or more 2019-2022 FB25 47 kPa (7 psi) or more N/A 230 kPa (33 psi) or more Impreza 2012-2016 FB20 69 kPa (10 psi) or more 69 kPa (10 psi) or more 206 kPa (30 psi) or more 2017-2022 FB20 56 kPa (8 psi) or more 48 kPa (7 psi) or more 230 kPa (33 psi) or more Crosstrek 2012-2017 FB20 69 kPa (10 psi) or more 69 kPa (10 psi) or more 206 kPa (30 psi) or more 2018-2022 FB20 56 kPa (8 psi) or more 48 kPa (7 psi) or more 230 kPa (33 psi) or more 2021-2022 FB25 47 kPa (7 psi) or more N/A 230 kPa (33 psi) or more WRX 2015-2022 FA20 DIT 65 kPa (9.5 psi) or more 65 kPa (9.5 psi) or more 324 kPa (47 psi) or more STI 2015-2022 EJ25 N/A 102 kPa (14.8 psi) or more 451 kPa (65.4 psi) or more Ascent 2019-2022 FA24 DIT 62 kPa (9 psi) or more N/A 350 kPa (50 psi) or more BRZ 2013-2020 FA20 D-4S 50 kPa (7 psi) or more 50 kPa (7psi) or more 222 kPa (32 psi) or more STEP 6 ) After inspection, reinstall the related parts in the reverse order of removal. NOTE: No changes have been made to the Warranty Labor Time Guide for this procedure. 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.
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