DTC C1231/31 Steering Angle Sensor Circuit Malfunction: Description

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

DIAGNOSTIC TROUBLE CODE CHART

DTC No.	INF Code	DTC Detecting Condition	Trouble Area
C1231/31	-	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 Steering angle sensor circuit Steering angle sensor power supply Skid control ECU