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.
2010 Toyota FJ Cruiser 4WD, AutomaticFACTORY OEM SERVICE PROCEDURE
Vehicle Stability Control System
VSC DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| 43 | ABS Control System Malfunction |
| C1201/51 | Engine Control System Malfunction |
| C1202/52 | Brake Fluid Level Low / Open Circuit in Brake Fluid Level Warning Switch Circuit |
| C1203/53 | ECM Communication Circuit Malfunction |
| C1210/36 | Zero Point Calibration of Yaw Rate Sensor Undone |
| C1231/31 | Steering Angle Sensor Circuit Malfunction |
| C1232/32 | Stuck in Deceleration Sensor |
| C1234/34 | Yaw Rate Sensor Malfunction |
| C1290/66 | Steering Angle Sensor Zero Point Malfunction |
| C1336/39 | Zero Point Calibration of Acceleration Sensor Undone |
| C1380/64 | Stop Light Control Relay Malfunction |
| C1439/66 | Steering Angle Sensor Initialization Incomplete |
| C1440/98 | Steering Angle Sensor Unusual Bank Angle Detected |
| C1443/34 | Invalid Data Received from Yaw Rate Sensor |
| C1445/66 | Vehicle Driven with Steering Angle Sensor not Initialized |
| U0100/65 | Lost Communication with ECM / PCM |
| U0123/62 | Lost Communication with Yaw Rate Sensor Module |
| U0126/63 | Lost Communication with Steering Angle Sensor Module |
TEST MODE (VSC) SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| C0371/71 | Yaw Rate Sensor (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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