Completing Subaru self-shutoff procedure

July 1, 2024
This bulletin applies to all 2020 Subaru models equipped with a 2.0 or 2.4L DIT (turbo) engine.

This bulletin applies to all 2020 Subaru models equipped with a 2.0 or 2.4L DIT (turbo) engine.

You may encounter DTC P0606. The engine management system is equipped with a backup memory. When disconnecting the battery cables, this backup memory is cleared. After reconnecting the battery, if the ignition switch is turned back ON within one minute after the first time the ignition is turned off, it becomes possible for the CEL to illuminate, storing P0606 in memory.

The code will not occur immediately but may occur after a period of time depending on how the vehicle is operated.

Examples of scenarios which can start the groundwork for DTC P0606:

- Disconnecting the battery

- OBD memory clear

- A dead or deeply discharged battery

- Accessory installation or other service procedures which require battery disconnection

- ECM replacement (requiring batter disconnection)

To minimize the chances of P0606 from setting, if you know (or suspect) any of the above has occurred, or if you already have P0606 set), follow this procedure:

1. Using the SSMIII, clear the ECM memory in OBD (main menu>each system check>engine control system>OBD system>clear memory).

2. Turn the ignition to ON, then OFF normally one time. Wait for more than one minute before turning the ignition back to ON again.

This procedure allows the self-shutoff relay to power down, completing the self-shutoff procedure.

About the Author

Motor Age Staff

Motor Age has been publishing technical content for professional automotive technicians since 1899. Our writers have decades of experience and scores of ASE certifications, and they continue to teach new generations of technicians via classrooms all around the globe, as well as through the books and training manuals they've authored. 

Sponsored Recommendations

Garage Tip: The Value of System Solutions

Learn why inspecting related parts when repairing your vehicle can save you time and money. Avoid future failures and ensure satisfaction! Click to watch now.

Access the Best Learning Resource for Professional Mechanics

Get hands-on tips, updated repair instructions, mounting videos, failure diagnosis, and best practices for professional mechanics. Click to access essential technical info to ...

From the Basics to Innovations - Transmission Technical Training Videos

Explore Schaeffler's portfolio of transmission technical trainings for the LuK brand. Tailored for all skill levels, our modules cover basics to innovations. Click to learn more...

Clutch Release Problems - Diagnosis & Failure Analysis

Explore common clutch release problems and their causes, from hydraulic issues to mechanical faults. Understand diagnostics and solutions for optimal clutch performance.

Voice Your Opinion!

To join the conversation, and become an exclusive member of Vehicle Service Pros, create an account today!