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Home >> Subaru >> 2015 >> BRZ Limited, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Vehicle Stability Control System) >> Vehicle Stability Control System >> DTC C1231 Steering Angle Sensor Malfunction >> Description of functions

Description of functions

WARNING: This page is about a different car, the 2014 Subaru BRZ. However, it is still accessible from the selected car via links, so may be relevant.

The skid control computer (brake actuator Assembly) inputs the steering sensor signal through CAN communication.

If there is a trouble in the communication line connected to the steering sensor, the diagnostic code "U0126(Nonarrival of H-CAN data(Steering angle sensor))" is output.

Diagnostic codes DTC detecting conditions Faulty part
C1231 When the voltage at +BS terminal is between 9.6 to 16.5 V, a steering sensor error signal is received.
  • ECM IG1 fuse
  • Wiring harness or connector
  • Steering sensor