Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2016 Subaru BRZ Limited, Automatic TransFACTORY OEM SERVICE PROCEDURE
Lin Communication System DTCS
LIN COMMUNICATION SYSTEM DTCS DIAGNOSTIC TROUBLE CODE (DTC) LIST
| Diagnostic codes | Description |
|---|---|
| B2321 | [D seat P/W ECU communication suspension] |
| B2325 | [Door system LIN communication bus abnormal] |
| B2785 | [LIN communication error] |
| B2786 | [No Response from Steering Lock ECU] |
| B2789 | [No response of the ID code box] |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.