DTC C1511: Torque Sensor1; DTC C1512: Torque Sensor2; DTC C1513: Torque Sensor Deviation Excessive; DTC C1514: Torque Sensor Power Supply Voltage; DTC C1521: Short in Motor Circuit; DTC C1522: Power Supply Sensor; DTC C1523: Current Deviation Excessive; DTC C1528: Motor Rotation Angle Sensor; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: Temperature Sensor Circuit is Low or High; DTC C1534: EEPROM; DTC C1555: Motor Relay Welding Failure [12/2019 - 11/2023]: Description
While torque sensor system, motor system or ECU system malfunctions are detected, the fail-safe function suspends power assist. However, power assist continues with limited assistance amount if only C1533 or C1534 is output.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Return-to-normal Condition | Note |
|---|---|---|---|---|---|---|
| C1511 | Torque Sensor1 | Torque sensor malfunction | Rack and pinion power steering gear assembly | EPS warning light: Comes on | Ignition switch is turned to ON again | - |
| C1512 | Torque Sensor2 | Torque sensor malfunction | Rack and pinion power steering gear assembly | EPS warning light: Comes on | Ignition switch is turned to ON again | - |
| C1513 | Torque Sensor Deviation Excessive | Torque sensor malfunction | Rack and pinion power steering gear assembly | EPS warning light: Comes on | Ignition switch is turned to ON again | - |
| C1514 | Torque Sensor Power Supply Voltage | Torque sensor malfunction | Rack and pinion power steering gear assembly | EPS warning light: Comes on | Ignition switch is turned to ON again | - |
| C1521 | Short in Motor Circuit | Motor overcurrent | Rack and pinion power steering gear assembly | EPS warning light: Comes on | Ignition switch is turned to ON again | - |
| C1522 | Power Supply Sensor | Motor current sensor malfunction | Rack and pinion power steering gear assembly | EPS warning light: Comes on | Ignition switch is turned to ON again | - |
| C1523 | Current Deviation Excessive | Excessively large current deviation | Rack and pinion power steering gear assembly | EPS warning light: Comes on | Ignition switch is turned to ON again | - |
| C1528 | Motor Rotation Angle Sensor | Motor rotation angle sensor malfunction | Rack and pinion power steering gear assembly | EPS warning light: Comes on | Ignition switch is turned to ON again | - |
| C1531 | ECU Malfunction | ECU internal malfunction (CPU malfunction) | Rack and pinion power steering gear assembly | EPS warning light: Comes on | Ignition switch is turned to ON again | - |
| C1532 | ECU Malfunction | ECU internal malfunction (Peripheral circuit malfunction) | Rack and pinion power steering gear assembly | EPS warning light: Comes on | Ignition switch is turned to ON again | - |
| C1533 | Temperature Sensor Circuit is Low or High | ECU internal malfunction (Substrate temperature sensor malfunction) | Rack and pinion power steering gear assembly | EPS warning light: Comes on | The ECU judges the system has returned to normal | - |
| C1534 | EEPROM | ECU internal malfunction (EEPROM error) | Rack and pinion power steering gear assembly | EPS warning light: Comes on | Ignition switch is turned to ON again | - |
| C1555 | Motor Relay Welding Failure | Motor relay circuit malfunction | Rack and pinion power steering gear assembly | EPS warning light: Comes on | Ignition switch is turned to ON again | - |