DTC C1231: Lost Communication with Steering Angle Sensor Module: Procedure

1. Check if DTC U0073 is output. Refer to DTC CHECK / CLEAR .
   RESULT
   
   

   Result	Proceed to
   DTC U0073 is not output	A
   DTC U0073 is output	B

   HINT: 

   DTC U0073 indicates a CAN communication malfunction in the power steering system.

B → See step   4 

A: Go to next step 

1. Using the Techstream, check for DTCs related to the steering angle sensor and confirm that there are no problems in the brake control system. Refer to DTC CHECK / CLEAR .
   RESULT
   
   

   Result		Proceed to
   DTC is not output		A
   DTC is output		B

B → See step   5 

A → See step   3