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.
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HOMESERVICE MANUALSTOYOTA2025HIGHLANDER LIMITED, FWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 384 (LIN COMMUNICATION SYSTEM - DIAGNOSTIC CODES)
2025 Toyota Highlander Limited, FWD
Section 384 (Lin Communication System - Diagnostic Codes)
2025 Toyota Highlander Limited, FWDSECTION Section 384 (Lin Communication System - Diagnostic Codes)
WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, 2023 Toyota Corolla Cross, and 2022 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.
- Lin Communication System
- DTC B1206-87: P/W Master SW System Missing Message; DTC B1273-87: Sliding Roof System Missing Message; DTC B2321-87: D-Door P/W System Missing Message; DTC B2322-87: P-Door P/W System Missing Message; DTC B2323-87: RR-Door P/W System Missing Message; DTC B2324-87: RL-Door P/W System Missing Message [09/2021 - 11/2022]
- DTC B1206-87: P/W Master SW System Missing Message; DTC B1273-87: Sliding Roof System Missing Message; DTC B2321-87: D-Door P/W System Missing Message; DTC B2322-87: P-Door P/W System Missing Message; DTC B2323-87: RR-Door P/W System Missing Message; DTC B2324-87: RL-Door P/W System Missing Message [11/2022 - ]
- DTC B2287-87: LIN Communication Missing Message [09/2021 - 11/2022]
- DTC B2287-87: LIN Communication Missing Message [11/2022 - ]
- DTC B2325-88: Door LIN Bus off [09/2021 - 11/2022]
- DTC B2325-88: Door LIN Bus off [11/2022 - ]
- DTC B2785-88: Communication between ECUs connected by LIN Bus off [09/2021 - 11/2022]
- DTC B2785-88: Communication between ECUs connected by LIN Bus off [11/2022 - ]
- DTC B2789-87: ID-BOX Missing Message [09/2021 - 11/2022]
- DTC B2789-87: ID-BOX Missing Message [11/2022 - ]
- DTC B278C-87: Power Source Control System Missing Message [09/2021 - 11/2022]
- DTC B278C-87: Power Source Control System Missing Message [11/2022 - ]
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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.