OBD Guide

U049C

Invalid Data Received From Battery Charger Control Module A

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Malfunction warning on the instrument panel
  • Battery charging problems
  • Reduced engine power (in hybrids)
  • Inability to start (in electric cars)
  • Extended charging time

Causes

  • Damage to the wiring harness to the charging module
  • Charging control module A fault
  • Module power problems
  • Contact corrosion
  • Software error in the module

How to Fix

  1. Check the integrity of the wiring harness to the module
  2. Check the power supply and ground of the module
  3. Read extended module error codes
  4. Update module software
  5. Replace the charging control module if necessary

Related codes

Error U049C by Vehicle Brand