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.
2007 Lexus LS 460FACTORY OEM SERVICE PROCEDURE
Power Steering System DTCS
POWER STEERING DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| C1511 | Torque Sensor Circuit Malfunction |
| C1512 | Torque Sensor Circuit Malfunction |
| C1513 | Torque Sensor Circuit Malfunction |
| C1515 | Torque Sensor Zero Point Adjustment Undone |
| C1516 | Torque Sensor Zero Point Adjustment Incomplete |
| C1521 | Motor Circuit Malfunction |
| C1522 | Motor Circuit Malfunction |
| C1523 | Motor Circuit Malfunction |
| C1524 | Motor Circuit Malfunction |
| C1525 | Rotation Angle Sensor Initialization Undone |
| C1526 | Rotation Angle Sensor Initialization Incomplete |
| C1528 | Motor Rotation Angle Sensor Malfunction |
| C1531 | ECU Malfunction |
| C1532 | ECU Malfunction |
| C1533 | ECU Malfunction |
| C1534 | ECU Malfunction |
| C1541 | Vehicle Speed Signal Malfunction |
| C1552 | PIG Power Supply Voltage Malfunction |
| C1555 | Motor Relay Welding Failure |
| C1563 | DC / DC Converter IG Power Supply Voltage |
| C1564 | Lost Communication with WDD Signal of DC / DC Converter |
| C1565 | Lost Communication with LDD/ASST Signal of DC / DC Converter |
| C1567 | Error in Matching of ECUs |
| C1568 | DC-DC Converter Malfunction |
| C1569 | Battery Power Supply Voltage Malfunction |
| C1581 | Assist Map Number Un-Writing |
| U0100 | Lost Communication with ECM/ PCM "A" |
| U0129 | Lost Communication with Brake System Control Module |
| U0130 | Lost Communication with Steering Effort Control Module |
| U1104 | Lost Communication with Driving Support ECU |
| U1105 | Lost Communication with Parking Assist ECU |
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.
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