Lexus IS250 IS220d GSE20 ALE20 - POWER STEERING
ELECTRONIC POWER STEERING SYSTEM - DIAGNOSTIC TROUBLE CODE CHART
| DTC No. | Detection Item | Trouble Area | See page |
| C1511 | Torque Sensor Circuit Malfunction | 1. Wire harness. 2. Torque sensor (built into power steering gear assembly) 3. Power steering ECU assembly | |
| C1512 | Torque Sensor Circuit Malfunction | 1. Wire harness. 2. Torque sensor (built into power steering gear assembly) 3. Power steering ECU assembly | |
| C1513 | Torque Sensor Circuit Malfunction | 1. Wire harness. 2. Torque sensor (built into power steering gear assembly) 3. Power steering ECU assembly | |
| C1515 | Torque Sensor Zero Point Adjustment Undone | - | |
| C1516 | Torque Sensor Zero Point Adjustment Incomplete | - | |
| C1521 | Motor Circuit Malfunction | 1. Power steering ECU assembly | |
| C1522 | Motor Circuit Malfunction | 1. Power steering ECU assembly | |
| C1523 | Motor Circuit Malfunction | 1. Wire harness. 2. Power steering motor (built into power steering gear assembly) 3. Power steering ECU assembly | |
| C1524 | Motor Circuit Malfunction | 1. Wire harness. 2. Power steering motor (built into power steering gear assembly) 3. Power steering ECU assembly | |
| C1525 | Rotation Angle Sensor Initialization Undone | - | |
| C1526 | Rotation Angle Sensor Initialization Incomplete | - | |
| C1528 | Motor Rotation Angle Sensor Malfunction | 1. Motor rotation angle sensor (built into power steering gear assembly) 2. Wire harness 3. Power steering earth wire 4. Power steering ECU assembly | |
| C1531 | ECU Malfunction | 1. Power steering ECU assembly | |
| C1532 | ECU Malfunction | 1. Power steering ECU assembly | |
| C1533 | ECU Malfunction | 1. Power steering ECU assembly | |
| C1534 | ECU Malfunction | 1. Power steering ECU assembly | |
| C1541 | Vehicle Speed Signal Malfunction | 1. Speed sensor circuit 2. Skid control ECU 3. CAN communication system 4. Power steering ECU assembly | |
| C1551 | IG Power Supply Voltage Malfunction | 1. Power steering ECU assembly | |
| C1552 | PIG Power Supply Voltage Malfunction | 1. EPS fuse 2. Wire harness 3. Power steering ECU assembly | |
| C1554 | Power Supply Relay Failure | 1. Power steering ECU assembly | |
| C1555 | Motor Relay Welding Failure | 1. Power steering ECU assembly | |
| C1581 | Assist Map Number Un-Writing | 1. ECM 2. Gateway ECU 3. Power steering ECU assembly | |
| U0105 | Lost Communication with ECM | 1. CAN communication system 2. ECM | |
| U0121 | Lost Communication with Anti-lock Brake System (ABS) Control Module | 1. CAN communication system 2. Skid control ECU |
LEXUS IS250, IS220d / GSE20 ALE20