General Information

Electronic Stability Control
C1261 Steering Angle Sensor Not Calibrated - General Information

Component Location





General Description

The Steering Angle Sensor(SAS) uses two sensors ( A-sensor and B-sensor ) to determine the direction of the rotation of the wheel. The main component of each sensor is LED, photo transistor and slit plate.
The slit plate, which has 45 holes, is installed between LED and photo transistor, and generates signals if the slit plate rotates according to the steering wheel rotation. The steering angle sensor's signals are generated by photo transistor which is driven whenever the light passes through the holes. The HECU receives the steering signals from steering angle sensor by CAN communication and detects the operating speed and the direction of the steering wheel.

DTC Description

The steering angle sensor in the ESC system(it is equally said ESP system) is an absolute angle sensor type. For this reason, the steering angle sensor needs the zero setting(Calibration) by the scantool. If the calibration of this sensor is undone, this DTC is set.

DTC Detecting Condition