SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2025HIGHLANDER HYBRID XLEREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESLIN COMMUNICATION SYSTEM - DIAGNOSTICS - INTRODUCTIONLIN COMMUNICATION SYSTEMDIAGNOSTIC TROUBLE CODE CHART [12/2019 - 10/2021]DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 10/2021]
2025 Toyota Highlander Hybrid XLE

Diagnostic Trouble Code Chart [12/2019 - 10/2021]

2025 Toyota Highlander Hybrid XLESECTION Diagnostic Trouble Code Chart [12/2019 - 10/2021]
LIN COMMUNICATION SYSTEM

DTC No. Detection Item Link
B1206 P/W Master Switch Communication Stop Refer to DTC B1206: P/W Master Switch Communication Stop; DTC B1273: Sliding Roof ECU Communication Stop; DTC B2321: D-Door Motor ECU Communication Stop; DTC B2322: P-Door Motor ECU Communication Stop; DTC B2323: RR-Door Motor ECU Communication Stop; DTC B2324: RL-Door Motor ECU Communication Stop; DTC B2329: Lost Communication with Sliding Sunshade ECU [12/2019 - 11/2023]
B1273 Sliding Roof ECU Communication Stop Refer to DTC B1206: P/W Master Switch Communication Stop; DTC B1273: Sliding Roof ECU Communication Stop; DTC B2321: D-Door Motor ECU Communication Stop; DTC B2322: P-Door Motor ECU Communication Stop; DTC B2323: RR-Door Motor ECU Communication Stop; DTC B2324: RL-Door Motor ECU Communication Stop; DTC B2329: Lost Communication with Sliding Sunshade ECU [12/2019 - 11/2023]
B2321 D-Door Motor ECU Communication Stop Refer to DTC B1206: P/W Master Switch Communication Stop; DTC B1273: Sliding Roof ECU Communication Stop; DTC B2321: D-Door Motor ECU Communication Stop; DTC B2322: P-Door Motor ECU Communication Stop; DTC B2323: RR-Door Motor ECU Communication Stop; DTC B2324: RL-Door Motor ECU Communication Stop; DTC B2329: Lost Communication with Sliding Sunshade ECU [12/2019 - 11/2023]
B2322 P-Door Motor ECU Communication Stop Refer to DTC B1206: P/W Master Switch Communication Stop; DTC B1273: Sliding Roof ECU Communication Stop; DTC B2321: D-Door Motor ECU Communication Stop; DTC B2322: P-Door Motor ECU Communication Stop; DTC B2323: RR-Door Motor ECU Communication Stop; DTC B2324: RL-Door Motor ECU Communication Stop; DTC B2329: Lost Communication with Sliding Sunshade ECU [12/2019 - 11/2023]
B2323 RR-Door Motor ECU Communication Stop Refer to DTC B1206: P/W Master Switch Communication Stop; DTC B1273: Sliding Roof ECU Communication Stop; DTC B2321: D-Door Motor ECU Communication Stop; DTC B2322: P-Door Motor ECU Communication Stop; DTC B2323: RR-Door Motor ECU Communication Stop; DTC B2324: RL-Door Motor ECU Communication Stop; DTC B2329: Lost Communication with Sliding Sunshade ECU [12/2019 - 11/2023]
B2324 RL-Door Motor ECU Communication Stop Refer to DTC B1206: P/W Master Switch Communication Stop; DTC B1273: Sliding Roof ECU Communication Stop; DTC B2321: D-Door Motor ECU Communication Stop; DTC B2322: P-Door Motor ECU Communication Stop; DTC B2323: RR-Door Motor ECU Communication Stop; DTC B2324: RL-Door Motor ECU Communication Stop; DTC B2329: Lost Communication with Sliding Sunshade ECU [12/2019 - 11/2023]
B2325 LIN Communication Bus Malfunction Refer to DTC B2325: LIN Communication Bus Malfunction [12/2019 - 11/2023]
B2329 Lost Communication with Sliding Sunshade ECU Refer to DTC B1206: P/W Master Switch Communication Stop; DTC B1273: Sliding Roof ECU Communication Stop; DTC B2321: D-Door Motor ECU Communication Stop; DTC B2322: P-Door Motor ECU Communication Stop; DTC B2323: RR-Door Motor ECU Communication Stop; DTC B2324: RL-Door Motor ECU Communication Stop; DTC B2329: Lost Communication with Sliding Sunshade ECU [12/2019 - 11/2023]
B2785 Communication Malfunction between ECUs Connected by LIN Refer to DTC B2785: Communication Malfunction between ECUs Connected by LIN [12/2019 - 10/2021]
B2786 No Response from Steering Lock ECU Refer to DTC B2786: No Response from Steering Lock ECU [12/2019 - 10/2021]
B2789 No Response from ID BOX Refer to DTC B2789: No Response from ID BOX [12/2019 - 11/2023]
B278C Lost Communication with Power Source Control Refer to DTC B278C: Lost Communication with Power Source Control [12/2019 - 11/2023]
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.