OBD Guide

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

  1. Check the connections and connectors of the headlight module
  2. Check the integrity of the wiring to the module
  3. Scan the headlight module for errors
  4. Update module software
  5. If necessary, replace the headlight control module

Related codes

Error U0542 by Vehicle Brand