DTC C1231/31 Steering Angle Sensor Circuit Malfunction: Description

The skid control ECU inputs the steering sensor signal through the CAN communication. When a malfunction occurs in the communication line with the steering sensor, DTC U0126/63 (malfunction in communication with steering angle sensor) is output.

DTC DETECTION CONDITION CHART

DTC No.	INF Code	DTC Detection Condition	Trouble Area
C1231/31	341 342 343 344 345 346 347 348 349	When either condition below is met: Steering angle sensor malfunction signal is received when data transmission is valid (internal malfunction is detected at sensor self-check). A signal of +B open in steering angle sensor is received when communication with sensor is valid.	Steering angle sensor Skid control ECU