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Diagnostic Trouble Code Chart

HINT:

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "DTC No." below.

Variable gear ratio steering system 

DTC REFERENCE CHART

DTC No. Detection Item Trouble Area
C1591/51  Actuator Neutral Position Calibration Undone
  1. Steering actuator
  2. Steering control ECU
C1592/52  Actuator Neutral Position Calibration Incomplete
  1. Steering actuator
  2. Steering control ECU
C1593/53  Actuator Standard Position Malfunction
  1. Steering actuator
C1595/55  Lost Communication with Steering Angle Sensor Module
  1. Steering angle sensor
  2. Steering control ECU
  3. Wire harness
C1597/57  Lost Communication between VGRS and EPS
  1. Power steering ECU
  2. Steering control ECU
  3. CAN communication system (Local CAN)
C15A1/61  Actuator Malfunction
  1. Wire harness
  2. Steering actuator
  3. Steering control ECU
C15A2/62  Actuator Malfunction
  1. Wire harness
  2. Power source circuit
  3. Steering actuator
  4. Steering control ECU
C15A3/63  Actuator Malfunction
  1. Wire harness
  2. Steering actuator
  3. Steering control ECU
C15A4/64  Actuator Malfunction
  1. Steering actuator
C15A5/65  Actuator Malfunction
  1. Steering actuator
  2. Steering control ECU
C15A6/62  Actuator Malfunction
  1. Power source circuit
  2. Wire harness
  3. Steering actuator
  4. Steering control ECU
C15A9/66  Lock Holder Deviation Detection
  1. Steering actuator
C15AA/66  Lock Mechanism Release Incomplete
  1. Steering actuator
C15AB/66  Lock Mechanism Insertion Malfunction
  1. Steering actuator
C15B1/71  ECU Malfunction
  1. Steering control ECU
C15B2/72  ECU Malfunction
  1. Steering control ECU
C15B3/73  ECU Malfunction
  1. Steering control ECU
C15B4/71  ECU Malfunction
  1. Steering control ECU
C15C1/74  Steering Angle Sensor Malfunction
  1. Steering angle sensor
  2. CAN communication system
  3. Steering control ECU
C15C2/74  Steering Angle Sensor B+ Malfunction
  1. Steering angle sensor
  2. CAN communication system
  3. Steering control ECU
C15C3/75  Brake System Control Module Malfunction
  1. Skid control ECU
  2. CAN communication system
  3. Steering control ECU
C15C4/68  Steering Angle Signal (Test Mode DTC)
  1. Steering angle sensor
  2. Steering control ECU
C15C5/69  Motor Revolution Angle Signal (Test Mode DTC)
  1. Steering angle sensor
  2. Steering control ECU
C15C6/77  IG Power Supply Voltage Malfunction
  1. ECU-IG fuse
  2. IG circuit
  3. Charging system
  4. Steering control ECU
C15C7/78  DC Motor Power Source Voltage Malfunction
  1. VGRS fuse
  2. Power source circuit
  3. Steering control ECU
C15C8/79  Power Supply Relay Failure
  1. VGRS fuse
  2. Steering control ECU
U0122/56  Lost Communication with Vehicle Dynamics Control Module
  1. CAN communication
  2. Skid control ECU
U0123/56  Lost Communication with Yaw Rate (Deceleration) Sensor Module
  1. CAN communication system
  2. Yaw rate (deceleration) sensor
U0126/56  Lost Communication with Steering Angle Sensor Module
  1. CAN communication system
  2. Steering angle sensor
U0131/56  Lost Communication with Power Steering Control Module
  1. CAN communication system
  2. Power steering ECU
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