2017 Lexus CT 200h BaseFACTORY OEM SERVICE PROCEDURE

Power Steering System

POWER STEERING SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC Code Detection Item Proceed to
C1511 Torque Sensor Circuit Malfunction Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal [08/2014 - ]
C1512 Torque Sensor Circuit Malfunction Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal [08/2014 - ]
C1513 Torque Sensor Circuit Malfunction Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal [08/2014 - ]
C1514 Torque Sensor Power Supply Abnormal Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal [08/2014 - ]
C1515 Torque Sensor Zero Point Adjustment Undone Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone; DTC C1525: Rotation Angle Sensor Initialization Undone [08/2014 - ]
C1516 Torque Sensor Zero Point Adjustment Incomplete Refer to DTC C1516: Torque Sensor Zero Point Adjustment Incomplete; DTC C1526: Rotation Angle Sensor Initialization Incomplete [08/2014 - ]
C1517 Torque Hold Abnormal Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal [08/2014 - ]
C1521 Motor Circuit Malfunction Refer to DTC C1521: Motor Circuit Malfunction; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction [08/2014 - ]
C1522 Motor Circuit Malfunction Refer to DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1555: Motor Relay Welding Failure [08/2014 - ]
C1523 Motor Circuit Malfunction Refer to DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1555: Motor Relay Welding Failure [08/2014 - ]
C1524 Motor Circuit Malfunction Refer to DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1555: Motor Relay Welding Failure [08/2014 - ]
C1525 Rotation Angle Sensor Initialization Undone Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone; DTC C1525: Rotation Angle Sensor Initialization Undone [08/2014 - ]
C1526 Rotation Angle Sensor Initialization Incomplete Refer to DTC C1516: Torque Sensor Zero Point Adjustment Incomplete; DTC C1526: Rotation Angle Sensor Initialization Incomplete [08/2014 - ]
C1528 Motor Rotation Angle Sensor Malfunction Refer to DTC C1528: Motor Rotation Angle Sensor Malfunction [08/2014 - ]
C1531 ECU Malfunction Refer to DTC C1521: Motor Circuit Malfunction; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction [08/2014 - ]
C1532 ECU Malfunction Refer to DTC C1521: Motor Circuit Malfunction; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction [08/2014 - ]
C1533 ECU Malfunction Refer to DTC C1521: Motor Circuit Malfunction; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction [08/2014 - ]
C1534 ECU Malfunction Refer to DTC C1521: Motor Circuit Malfunction; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction [08/2014 - ]
C1541 Vehicle Speed Signal Malfunction Refer to DTC C1541: Vehicle Speed Signal Malfunction [08/2014 - ]
C1551 IG Power Supply Voltage Malfunction Refer to DTC C1551: IG Power Supply Voltage Malfunction [08/2014 - ]
C1552 PIG Power Supply Voltage Malfunction Refer to DTC C1552: PIG Power Supply Voltage Malfunction; DTC C1554: Power Supply Relay Failure [08/2014 - ]
C1554 Power Supply Relay Failure Refer to DTC C1552: PIG Power Supply Voltage Malfunction; DTC C1554: Power Supply Relay Failure [08/2014 - ]
C1555 Motor Relay Welding Failure Refer to DTC C1522: Motor Circuit Malfunction; DTC C1523: Motor Circuit Malfunction; DTC C1524: Motor Circuit Malfunction; DTC C1555: Motor Relay Welding Failure [08/2014 - ]
C1581 Assist Map Number Un-Writing Refer to DTC C1581: Assist Map Number Un-Writing [08/2014 - ]
C1582 Assist Map Number Mismatch Refer to DTC C1582: Assist Map Number Mismatch [08/2014 - ]
U0129 Lost Communication with Brake System Control Module Refer to DTC U0129: Lost Communication with Brake System Control Module; DTC U0293: Lost Communication with HV ECU [08/2014 - ]
U0293 Lost Communication with HV ECU Refer to DTC U0129: Lost Communication with Brake System Control Module; DTC U0293: Lost Communication with HV ECU [08/2014 - ]
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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.