U02B9

Lost Communication With Rear Radar Module D

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Rear parking sensors do not work
Disabling the Blind Spot Warning System
Error message on the dashboard
The Check Engine or other systems light comes on
Inability to activate parking assist features

Causes

Broken or damaged wires to the rear radar
Rear radar module malfunction
Connector problems or contact corrosion
Failures in ECU software
Radar module power supply problems

How to Fix

Check the integrity of the wiring to the rear radar
Inspect connectors for corrosion or damage
Check the power and ground of the radar module
Scan the radar module for errors
If necessary, replace the rear radar module
Repair only from an authorized dealer

Related codes

U02BA U02BB U02BC