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DTC C1231/31 Steering Angle Sensor Circuit Malfunction: Description

The steering angle sensor signal is sent to the skid control ECU through the CAN communication system. When there is a malfunction in the communication system, it will be detected by the diagnosis function.

DTC DETECTION CONDITION AND TROUBLE AREA

DTC Code DTC Detection Condition Trouble Area
C1231/31 When the ECU IG1 terminal voltage is 9.5 V or higher, the steering angle sensor malfunction signal is received.
  • Steering angle sensor
  • Harness or connector
  • Steering angle sensor power supply
  • CAN communication system
  • Master cylinder solenoid (Skid control ECU)