DTC Troubleshooting: U0423-F8 (Radar Vision Unit) (2025): Notes

DTC U0423-F8  : (Combination Switch Malfunction/Gauge Control Module Malfunction) (Radar Vision Unit)

How to use this service information .

NOTICE: 

• Before you troubleshoot, review the How to Troubleshoot .
• Troubleshoot the following DTCs first, if stored at the same time.
• • -

    Body Electrical System [Gauge Control Module]: Go to the indicated DTC's troubleshooting .

  • -

    Body Electrical System [Body Control Module]: Go to the indicated DTC's troubleshooting .

NOTE: 

• If a DTC is recorded again after it is cleared with the HDS, perform a troubleshooting for the body electrical system .
• B-CAN system information used to control the Integrated Driver Support System (Camera and Five Radars) of this vehicle is obtained from the gauge control module via the F-CAN.