DTC C1231: Lost Communication with Steering Angle Sensor Module: Description

The power steering ECU receives steering angle signals from the steering angle sensor via CAN communication. The power steering ECU provides appropriate assisting force in accordance with the steering angle signal.

DTC Code	DTC Detection Condition	Trouble Area
C1231	An abnormal steering angle signal is received.	Steering angle sensor (Spiral cable sub-assembly) CAN communication system Power steering ECU assembly