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.
2002 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Gateway System DTCS
GATEWAY SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| B1211 | Driver door ECU communication stop |
| B1212 | Passenger door ECU communication stop |
| B1213 | Tilt and telescopic ECU communication stop |
| B1214 | Door system communication bus malfunction (+B short) |
| B1215 | Door system communication bus malfunction (GND short) |
| B1216 | Rear right door ECU communication stop |
| B1217 | Rear left door ECU communication stop |
| B1219 | Rear seat switch communication stop |
| B1248 | AVC-LAN communication impossible |
| B1261 | Engine ECU communication stop |
| B1262 | A/C ECU communication stop |
| B1263 | Luggage room junction block ECU communication stop |
| B1266 | Instrument panel system communication bus malfunction (+B short) |
| B1267 | Instrument panel system communication bus malfunction (GND short) |
| B1269 | Theft deterrent ECU communication stop |
| B1271 | Combination meter ECU communication stop |
| B1272 | Power seat ECU communication stop |
| B1273 | Sliding roof ECU communication stop |
| B1275 | Accessory bus buffer communication stop |
| B1277 | Center cluster integration panel communication stop |
| B1278 | Combination switch ECU communication stop |
| B1279 | Rain sensor communication stop |
| B1281 | Airbag ECU communication stop |
| B1282 | Skid control ECU communication stop |
| B1283 | Driver side junction block ECU communication stop |
| B1284 | Passenger side junction block ECU communication stop |
| B1285 | Steering pad switch communication stop |
| B1291 | Light control system communication bus malfunction (+B short) |
| B1292 | Light control system communication bus malfunction (GND short) |
| B1294 | Immobiliser ECU communication stop |
| B1296 | Front light ECU communication stop |
| B1297 | Clearance sonar ECU communication stop |
| B1298 | Rear right seat ECU communication stop |
| B1299 | Rear left seat ECU communication stop |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
