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Home >> Lexus >> 2009 >> LS 460L AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control >> Electronically Controlled Brake System >> DTC C1439/66 Steering Angle Sensor Initialization Incomplete; DTC C1445/66 Vehicle Driven with Steering Angle Sensor not Initialized >> Description

DTC C1439/66 Steering Angle Sensor Initialization Incomplete; DTC C1445/66 Vehicle Driven with Steering Angle Sensor not Initialized: Description

The skid control ECU acquires steering angle sensor zero point every time the engine switch is turned on (IG) and the vehicle is driven at 35 km/h (22 mph) or more for approximately 5 seconds. The ECU also stores the previous zero point.

Warning of the steering angle sensor zero point malfunction will be canceled by turning the engine switch off.

DTC DETECTION CONDITION CHART

DTC Code Information Code DTC Detection Condition Trouble Area
C1439/66 352 With the vehicle speed at 15 km/h (9 mph) or more, the steering angle sensor zero point calibration cannot be obtained after 60 seconds of continuous driving.
  • Speed sensor
  • Steering angle sensor
  • Yaw rate and acceleration sensor
  • Skid control ECU
C1445/66 353 The steering angle sensor zero point calibration value is abnormal.
  • Speed sensor
  • Steering angle sensor
  • Yaw rate and acceleration sensor
  • Skid control ECU