U0542

Invalid Data Received From Headlamp Control Module A

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Incorrect operation of automatic headlights
Lighting error message on dashboard
Adaptive lighting doesn't work
Headlights turn on/off spontaneously
Reduced functionality of the lighting system

Causes

Malfunction of the headlight control module
Damage to the wiring harness to the headlight module
Poor contact in module connectors
Software error in the module
Module power problems

How to Fix

Check the connections and connectors of the headlight module
Check the integrity of the wiring to the module
Scan the headlight module for errors
Update module software
If necessary, replace the headlight control module

Related codes

U0541 U0543 U0544