OBD Guide

U0241

Lost Communication With Headlamp Control Module A

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Headlights do not work or work incorrectly
  • Lighting error message on dashboard
  • Automatic light switching does not function
  • Flashing or spontaneous turning on/off of headlights
  • Adaptive lighting functions disabled

Causes

  • Open or short circuit in the module power supply circuit
  • Damage to the wiring harness to the control module
  • Malfunction of the headlight control module itself
  • Connector problems or contact corrosion
  • Module software failures

How to Fix

  1. Check fuses associated with the lighting system
  2. Inspect the wiring harness and module connectors for damage.
  3. Check the power and ground on the module contacts
  4. Scan the module for additional errors
  5. If necessary, replace the headlight control module

Related codes

Error U0241 by Vehicle Brand