U02B5

Lost Communication With Front Radar Module B

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–556 (est.)

Symptoms

Active safety systems do not work
Error message on the dashboard
Disabling adaptive cruise control
Dashboard warning light
Reduced functionality of driver assistance systems

Causes

Broken or damaged wiring to the radar module
Front Radar Module B Malfunction
Connector problems or contact corrosion
Fuse box malfunction
Software error in the ECU

How to Fix

Check the integrity of the wiring harness to the radar module
Inspect and clean the connector contacts
Check fuses and module power supply
Scan the module for errors
Repair only from an authorized dealer

Related codes

U02B4 U02B6 C1A00