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.
2011 Lexus IS 250C StandardFACTORY OEM SERVICE PROCEDURE
VSC DTC Chart
VSC DTC CHART
| DTC Code | Detection Item | Trouble Area | See |
|---|---|---|---|
| C1201 | Engine Control System Malfunction | Engine control system | Refer to DTC C1201: Engine Control System Malfunction |
| C1210 | Zero Point Calibration of Yaw Rate Sensor Undone | Yaw rate and acceleration sensor | Refer to DTC C1210: Zero Point Calibration of Yaw Rate Sensor Undone; DTC C1336: Zero Point Calibration of Acceleration Sensor Undone |
| C1290 | Steering Angle Sensor Zero Point Malfunction | 1. Yaw rate and acceleration sensor zero point calibration incomplete 2. Poor adjustment of the center position of the steering wheel 3. Poor adjustment of front wheel alignment |
Refer to DTC C1290: Steering Angle Sensor Zero Point Malfunction |
| C1380 | Stop Light Control Relay Malfunction | 1. Stop light switch 2. Stop light switch circuit 3. Stop light control (BRK-LP) relay 4. Stop light control (BRK-LP) relay circuit 5. Brake actuator assembly (Skid control ECU) |
Refer to DTC C1380: Stop Light Control Relay Malfunction |
| C1432 | Steering Angle Sensor Power Source Voltage Malfunction | 1. Steering angle sensor power supply 2. Steering angle sensor |
Refer to DTC C1432: Steering Angle Sensor Power Source Voltage Malfunction |
| C1433 | Steering Angle Sensor Internal Circuit | Steering angle sensor | Refer to DTC C1433: Steering Angle Sensor Internal Circuit |
| C1434 | Steering Angle Sensor Output Malfunction | 1. Steering angle sensor power supply 2. Steering angle sensor 3. Brake actuator assembly (Skid control ECU) |
Refer to DTC C1434: Steering Angle Sensor Output Malfunction |
| C1435 | Yaw Rate Sensor Internal Circuit | Yaw rate and acceleration sensor | Refer to DTC C1419: Acceleration Sensor Internal Circuit; DTC C1435: Yaw Rate Sensor Internal Circuit |
| C1436 | Yaw Rate Sensor Malfunction | Yaw rate and acceleration sensor | Refer to DTC C1436: Yaw Rate Sensor Malfunction |
| C1437 | Lost Communication with ECM | 1. CAN communication system (Skid control ECU to ECM) 2. Brake actuator assembly (Skid control ECU) |
Refer to DTC C1437: Lost Communication with ECM |
| C1439 | Steering Angle Sensor Initialization Incomplete | 1. Steering angle sensor 2. Yaw rate and acceleration sensor 3. Brake actuator assembly (Skid control ECU) |
Refer to DTC C1439: Steering Angle Sensor Initialization Incomplete; DTC C1445: Vehicle Driven with Steering Angle Sensor not Initialized |
| C1440 | Unusual Bank Angle Detected | Yaw rate and acceleration sensor | Refer to DTC C1440: Unusual Bank Angle Detected |
| C1443 | Invalid Data Received from Yaw Rate Sensor | Yaw rate and acceleration sensor | Refer to DTC C1442: Invalid Data Received from Acceleration Sensor; DTC C1443: Invalid Data Received from Yaw Rate Sensor |
| C1445 | Vehicle Driven with Steering Angle Sensor not Initialized | 1. Steering angle sensor 2. Yaw rate and acceleration sensor 3. Brake actuator assembly (Skid control ECU) |
Refer to DTC C1439: Steering Angle Sensor Initialization Incomplete; DTC C1445: Vehicle Driven with Steering Angle Sensor not Initialized |
| U0100 | Lost Communication with ECM / PCM | CAN communication system (Skid control ECU to ECM) |
Refer to DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module |
| U0123 | Lost Communication with Yaw Rate Sensor Module | CAN communication system (Skid control ECU to yaw rate and acceleration sensor) |
Refer to DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module |
| U0126 | Lost Communication with Steering Angle Sensor Module | CAN communication system (Skid control ECU to steering angle sensor) |
Refer to DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module |
HINT:
In some cases, the Techstream cannot be used when the slip indicator light remains on.
Factory Service Tools
Use the Manual With the Right Hardware
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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.