Electronic Power Steering System
WARNING: This page is about a different car, the 2009 Lexus IS 350 and 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
ELECTRONIC POWER STEERING SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | 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 |
| C1551 | IG Power Supply Voltage Malfunction |
| C1552 | PIG Power Supply Voltage Malfunction |
| C1554 | Power Supply Relay Failure |
| C1555 | Motor Relay Welding Failure |
| C1581 | Assist Map Number Un-Writing |
| U0105 | Lost Communication with ECM |
| U0121 | Lost Communication with Anti-lock Brake System (ABS) Control Module |