General Information

C1261 Steering Angle Sensor Not Calibrated

General Information

Component Location





General Description

The Steering wheel angle sensor uses two sensors (A-sensor and B-sensor) to determine the direction of the rotation.
The main components of each sensor are LED, photo transistor and slit plate.
The slit plate, which has 45 holes, is installed between LED and photo transistor, and generates signals if slit plate rotates according to the steering wheel rotation.
The sensor signals are generated by photo transistor which is driven whenever the light passes through the holes. The HECU detects operating speed and direction of the steering wheel by this input signal, and the signal is used to input signal for anti-roll control.

DTC Description

The Steering Angle Sensor which is used for ESC control needs the zero-point setting for the normal operation because this sensor measures an absolute angle. The zero-point setting can be done by diagnostic tool. If the steering angle sensor is not calibrated, the ECU detects a failure and sets this code.

DTC Detecting Condition





Diagnostic Circuit Diagram