U02B3

Lost Communication With Driver Monitoring System Module

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Disabling the driver monitoring system
Error message on the dashboard
Related security features don't work
May be accompanied by other fault codes

Causes

Open or short circuit in the module power supply circuit
Damaged wiring harness or connectors
Driver monitoring module malfunction
Problems with ECU software
Blown circuit fuse

How to Fix

Check the fuses of the relevant circuits
Inspect the wiring harness and connectors for damage.
Check the power and ground of the monitoring module
Scan the module for additional error codes
If necessary, replace the driver monitoring module
Repair only from an authorized dealer

Related codes

U02B0 U02B1 U02B2