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.
2014 Lexus LX 570FACTORY OEM SERVICE PROCEDURE
Vehicle Stability Control System
VEHICLE STABILITY CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| C1203 | ECM Communication Circuit Malfunction |
| C120A | ECU Initial Setting Incomplete |
| C1210 | Zero Point Calibration of Yaw Rate Sensor Undone |
| C1225 | SM Solenoid Circuit |
| C1226 | SA2 Solenoid Circuit |
| C1227 | SA3 Solenoid Circuit |
| C1228 | STR Solenoid Circuit |
| C1232 | Acceleration Sensor Stuck Malfunction |
| C1241 | Low Power Supply Voltage Malfunction |
| C1242 | Open Circuit in IG1/IG2 Power Source Circuit |
| C1243 | Acceleration Sensor Stuck Malfunction |
| C1245 | Acceleration Sensor Output Malfunction |
| C1251 | Open in Pump Motor Circuit |
| C1252 | Brake Booster Pump Motor on Time Abnormally Long |
| C1253 | Pump Motor Relay |
| C1254 | Pressure Sensor or Switch |
| C1256 | Accumulator Low Pressure |
| C1257 | Power Supply Drive Circuit |
| C1268 | Transfer L4 Position Switch Circuit |
| C1289 | VGRS Control System Malfunction |
| C1290 | Steering Angle Sensor Zero Point Malfunction |
| C1336 | Zero Point Calibration of Acceleration Sensor Undone |
| C1337 | Diameter of the Tire is not Uniform |
| C1340 | Center Differential Lock Circuit |
| C1380 | Stop Light Control Relay Malfunction |
| C1381 | Acceleration Sensor Power Supply Voltage Malfunction |
| C1401 | Front Speed Sensor RH Malfunction |
| C1402 | Front Speed Sensor LH Malfunction |
| C1403 | Rear Speed Sensor RH Malfunction |
| C1404 | Rear Speed Sensor LH Malfunction |
| C1405 | Open or Short in Front Speed Sensor RH Circuit |
| C1406 | Open or Short in Front Speed Sensor LH Circuit |
| C1407 | Open or Short in Rear Speed Sensor RH Circuit |
| C1408 | Open or Short in Rear Speed Sensor LH Circuit |
| C1409 | Front Speed Sensor RH Performance |
| C1410 | Front Speed Sensor LH Performance |
| C1411 | Rear Speed Sensor RH Performance |
| C1412 | Rear Speed Sensor LH Performance |
| C1413 | Front Speed Sensor RH Output Malfunction |
| C1414 | Front Speed Sensor LH Output Malfunction |
| C1415 | Rear Speed Sensor RH Output Malfunction |
| C1416 | Rear Speed Sensor LH Output Malfunction |
| C1417 | High Power Supply Voltage Malfunction |
| C1419 | Acceleration Sensor Internal Circuit |
| C1420 | Acceleration Sensor Malfunction |
| C1421 | Open or Short in Master Cylinder Pressure Sensor |
| C1422 | Master Cylinder Pressure Sensor Zero Point High Malfunction |
| C1423 | Master Cylinder Pressure Sensor Zero Point Low Malfunction |
| C1424 | Master Cylinder Pressure Sensor Output Malfunction |
| C1425 | Open in Stop Light Switch Circuit |
| C1432 | Steering Angle Sensor Power Source Voltage Malfunction |
| C1433 | Steering Angle Sensor Internal Circuit |
| C1434 | Steering Angle Sensor Output Malfunction |
| C1435 | Yaw Rate Sensor Internal Circuit |
| C1436 | Yaw Rate Sensor Malfunction |
| C1437 | Lost Communication with ECM |
| C1439 | Steering Angle Sensor Initialization Incomplete |
| C1440 | Steering Angle Sensor Unusual Bank Angle Detected |
| C1442 | Invalid Data Received from Acceleration Sensor |
| C1443 | Invalid Data Received from Yaw Rate Sensor |
| C1445 | Vehicle Driven with Steering Angle Sensor not Initialized |
| C1452 | Accumulator Low Pressure |
| C1453 | Reservoir Level Switch Disconnected |
| C1454 | Reservoir Level Low |
| C1455* | Open or Short in Control Pressure Sensor |
| C1456* | Control Pressure Sensor Zero Point High |
| C1457* | Control Pressure Sensor Zero Point Low |
| C1458* | Control Pressure Sensor Zero Point Output |
| C1468 | SFR Solenoid Circuit |
| C1469 | SFL Solenoid Circuit |
| C146A | SRR Solenoid Circuit |
| C146B | SRL Solenoid Circuit |
| C146E | Open in ABS Solenoid Relay Circuit |
| C146F | Short in ABS Solenoid Relay Circuit |
| U0073 | Control Module Communication Bus OFF |
| U0100 | Lost Communication with ECM / PCM |
| U0114 | Lost Communication with 4WD Control ECU |
| U0123 | Lost Communication with Yaw Rate Sensor Module |
| U0124 | Lost Communication with Lateral Acceleration Sensor Module |
| U0126 | Lost Communication with Steering Angle Sensor Module |
| U0130 | Lost Communication with Steering Effort Control Module |
VEHICLE STABILITY CONTROL SYSTEM TEST MODE DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| C1271 | Low Output Signal of Front Speed Sensor RH (Test Mode DTC) |
| C1272 | Low Output Signal of Front Speed Sensor LH (Test Mode DTC) |
| C1273 | Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) |
| C1274 | Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) |
| C1275 | Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) |
| C1276 | Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC) |
| C1277 | Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) |
| C1278 | Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC) |
| C1279 | Acceleration Sensor Output Voltage Malfunction (Test Mode DTC) |
| C1281 | Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC) |
| C1282 | Center Differential Lock Position Switch |
| C1379 | Downhill Assist Control Switch Malfunction (Test Mode DTC) |
Factory Service Tools
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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.
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