DTC U0073: Control Module Communication Bus "A" Off; DTC U0126: Lost Communication With Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module [06/2018 - 09/2022]: Procedure

1. Clear the DTCs

   Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs 

2. Check for CAN communication system DTCs

   Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes 

   Result

   Result	Proceed to
   CAN communication system DTCs are output	A
   No CAN communication system DTCs are output	B

Result: 

A 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

Result: 

B 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]