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 MANUALSTOYOTA2014SEQUOIA LIMITED, 5.7L ENG VIN WREPAIR AND DIAGNOSISGENERAL INFORMATIONDTC INDEXNETWORKING DTCSCAN COMMUNICATION SYSTEM
2014 Toyota Sequoia Limited, 5.7L Eng VIN W
Can Communication System
2014 Toyota Sequoia Limited, 5.7L Eng VIN WSECTION Can Communication System
CAN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| B2621 | Communication Interruption |
| B2624 | Vehicles Speed Malfunction |
| U0104 | Lost Communication with Driving Support ECU |
| U0199 | Lost Communication with "Door Control Module A" |
| U0208 | Lost Communication with "Seat Control Module A" |
| U0230 | Lost Communication with Rear Gate Module |
| U0232 | Lost Communication with Blind Spot Monitor Slave Module |
| U0233 | Lost Communication with Blind Spot Monitor Master Module |
| U1002 | Lost Communication with Gateway Module |
| U1002 (CAN No. 2 BUS) | Lost Communication with Gateway Module (Network Gateway ECU) |
| U1115 | Lost Communication with Tilt and Telescopic Module |
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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.