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Diagnostic Trouble Code Chart

ELECTRONIC POWER STEERING SYSTEM 

DIAGNOSTIC TROUBLE CODE CHART

DTC No. Detection Item Trouble Area
C1511  Torque Sensor Circuit Malfunction
  1. Wire harness or connector
  2. Torque sensor (built into power steering link assembly)
  3. Power steering ECU assembly
C1512  Torque Sensor Circuit Malfunction
  1. Wire harness or connector
  2. Torque sensor (built into power steering link assembly)
  3. Power steering ECU assembly
C1513 Torque Sensor Circuit Malfunction
  1. Wire harness or connector
  2. Torque sensor (built into power steering link 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. Wire harness or connector
  2. Power steering motor
  3. Power steering ECU assembly
C1522 Motor Circuit Malfunction
  1. Wire harness or connector
  2. Power steering motor
  3. Power steering ECU assembly
C1523 Motor Circuit Malfunction
  1. Wire harness or connector
  2. Power steering motor
  3. Power steering ECU assembly
C1524  Motor Circuit Malfunction
  1. Wire harness or connector
  2. Power steering motor
  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 link assembly)
  2. Wire harness or connector
  3. Power steering earth wire
  4. Power steering ECU assembly
C1531  ECU Malfunction Power steering ECU assembly
C1532  ECU Malfunction Power steering ECU assembly
C1533  ECU Malfunction Power steering ECU assembly
C1534  ECU Malfunction 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
C1546  Malfunction in HV ECU Hybrid control system
C1551  IG Power Supply Voltage Malfunction Power steering ECU assembly
C1555  Motor Relay Welding Failure Power steering ECU assembly
C1568  DC-DC Converter Malfunction
  1. Power steering converter
  2. Hybrid control system
  3. EPS DDC fuse
  4. Wire harness or connector
  5. Power steering converter earth wire
  6. Power steering ECU assembly
C1569  Battery Power Supply Voltage Malfunction
  1. Power source
  2. Wire harness or connector
  3. Power steering ECU assembly
C1581  Assist Map Number Un-Writing Power steering ECU assembly
U0073  Control Module Communication Bus Off CAN communication system
U0105  Lost Communication with ECM
  1. CAN communication system
  2. HV control ECU (when U0105 only is output)
U0121  Lost Communication with Anti-lock Brake System (ABS) Control Module
  1. CAN communication system
  2. Skid control ECU (when U0121 only is output)
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