LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2008 >> IS F >> Repair and Diagnosis >> Brakes >> Brakes Control Systems >> Brake Control / Dynamic Control Systems >> Vehicle Stability Control System >> DTC C1231/31 Steering Angle Sensor Circuit Malfunction >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC C1231/31 Steering Angle Sensor Circuit Malfunction: Description

Steering angle sensor signals are sent to the skid control ECU via the CAN communication system. When there is a malfunction in the CAN communication system, it will be detected by the steering angle sensor zero point malfunction diagnostic function

DTC DETECTION CONDITION

DTC Code DTC Detection Condition Trouble Area
C1231/31 The IG1 terminal voltage is 9 5 V or more and a steering angle sensor malfunction signal is received
  • Steering angle sensor
  • Steering angle sensor circuit
  • Steering angle sensor power supply
  • Skid control ECU