DTC U0400-29: Invalid Data Received - Signal invalid: Action

Using the manufacturer approved diagnostic system, check the infotainment master controller for related DTCs and refer to the relevant DTC index
Using the manufacturer approved diagnostic system, check the anti-lock brake system control module for related DTCs and refer to the relevant DTC index
Using the manufacturer approved diagnostic system, check the steering angle sensor module for related DTCs and refer to the relevant DTC index